Lawnmower

• US 5,493,851 A
• Filed: 09/09/1994
• Issued: 02/27/1996
• Est. Priority Date: 09/09/1993
• Status: Expired due to Fees

• Current Assignee: Werner Kress
• Original Assignee: Werner Kress
• Inventors: Kress, Werner, Stephany, Christian, Lindermeir, Wolfgang, Katzer, Johann, Lopic, Franz
• Primary Examiner(s): Suchfield, George A.
• Application Number:
  US08/303,642
• Time in Patent Office: 536 Days
• Field of Search: 56/13.7, 56/16.7, 56/16.9, 56/256, 172/13, 172/21
• US Class Current: 56/13.7
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 42/04 Soil working

Abstract

With a limited separating spacing immediately upstream of a mowing implement rotating in a horizontal plane, a lawnmower has an upward extraction implement rotating in the same direction as the advance direction about a horizontal transverse axis and which is located in a common casing, but in a separate casing chamber. The upward extraction implement is disengagingly driven by means of a gear by the drive motor of the mowing implement and is essentially located between the front wheels, which are vertically adjustable for the joint setting of the working height of the two implements. Thus, it is possible to in each case separately and also jointly and simultaneously work with the two implements, so that numerous use possibilities exist.

Claims

1. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, common with working tools (70) of at least two of said working implements (8,9) being reciprocally rotational and arranged behind one another, in directly adjacent succession with respect to said advance direction (16) in a view on said running plane (10) and in an operational state, a clear distance between orbits of working tools of said mowing implement and of said additional implement being smaller than a working radius of an orbit of said additional implement (8), said chassis (2a)including ground supporters (4a,5) defining lateral running tracks, said additional implement (8a) extending between said running tracks and being located in a casing chamber (37a)separate from said mowing implement (9a).

2. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9) substantially independently of said advance motion of said chassis (2), wherein at least two of said working implements (8) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implement (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, both said working implements (8,9) being located directly adjacent to two remote sides of a single intermediate inherently substantially rigid shield unit (40), said working implements (8,9) having work axes (11,12) oriented substantially at right angles with respect to one another.

3. The lawnmower according to claim 2, wherein at least one of said working implement (8a) has projecting substantially resilient working prongs (70) axially and circumferentially distributed over a circumference of a roll core (72a), at least one of said additional implement (8a) being assembled from at least one of substantially identical and axially lined up implement bodies (80), and

implement bodies (80) which independently of reciprocal interengagement are securable against rotation in reciprocally displaced rotation positions,

at least one of said implement bodies (80) having a hub body (73a) providing a roll core (72a) and an implement hub (76a) positionally positively securable in variable rotation positions by axial plug mounting on a profile shaft (71a).

4. The lawnmower according to claim 2, wherein at least one of said working implement (8a) provides a number of axially lined-up implement bodies (80), said number being between equal and bigger than a number of variable rotation positions in which at least one of said implement bodies (80) is assemblable.

5. The lawnmower according to claim 2, wherein at least one of said additional implement is a scarifier for at least one of

extracting vegetation and ground particles from a soil ground,

ripping out the particles from the soil ground, scarifying vegetation and soil to provide venting breaches,

picking up, lifting, conveying and discharging particles in a continuous motion without gripping, and

drag micro ploughing above lower vegetation root parts while leaving most of the plants substantially unhurt and alife in the soil.

6. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), and setting means for substantially independently selectively transferring at least two of said working implements (8,9) including said mowing implement into and out of working engagement by displacing said working implements with respect to said running plane (10), said chassis (2) including a chassis base (3) and ground supporters (4,5) defining lateral running tracks, said ground supporters (4,5) being commonly adjustable with respect to said chassis base (3) by said setting means.

7. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9) wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said additional implement (8) being driveable independently of another of said working implements (9,8) and of a travelling drive (67) provided for positively driving said chassis (2) in said advance direction (16).

8. A lawnmower (1) comprising;

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas,

a drive means (20) for driving at least one of said working implements (8,9) wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), and setting means (50) for commonly adjusting working planes (13,14) of at least two of said working implements (8,9) with respect to said running plane (10) in a height direction oriented transverse to said working planes (13,14), said chassis (2) including four separate ground supporters (4,5) mounted on a chassis base (3) of the chassis, with said setting means (50) at least two of said ground supporters (4,5) being commonly adjustable with respect to said chassis base (3).

9. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9) wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), for an inherently stable ground support in the working state of both said working implements (8,9) said chassis (2) providing a plurality of wheels (4,5), substantially all said wheels (4,5) being commonly adjustable in height together with respect to a chassis base (3) of said chassis (2), said chassis base (3) carrying said working implements (8,9) and said drive means (20).

10. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform positively driven working motions, said working implements (8,9) beginning in operation at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis (2) having front and rear ground supporters (4,5), at least two of said working implements (8,9) being adjustable over control paths with respect to said running plane (10), said front and rear ground supporters (4,5) being separate but commonly adjustable in positively constrained control connection with respect to a chassis base (3).

11. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis (2) having a chassis base (3) and lateral ground supporters (4,5) for continuously displaceably engaging the ground in said running plane (10), at least one of said ground supporters (4,5) defining a central axis (15) and being adjustable in a pivot motion about at least one control axis (53) oriented parallel to said central axis (15), at least one of said control axis (53) positively interconnecting at least two of said lateral ground supporters (4) of said chassis (2) and being spaced from said additional implement (8).

12. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis (2) having at least one control axis (53) for adjusting height of a ground supporter (4,5), said control axis (53) being substantially level with a work axis (11) of said additional implement (8), a central supporter axis (15) of said particular ground supporter (4,5) being oriented substantially parallel to said running plane and adjustable in at least one position above said work axis (11) of said additional implement (8) when in an operational working position.

13. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), when in an operational working position a lowermost working zone of at least one of said additional implement (8) being located behind at least part of a frontal ground support zone of said chassis (2) including a chassis base (3), said chassis base (3) including lateral walls (48) for laterally protectingly shielding said additional implement (8) and said mowing implement (9), lower edges (49,51) of said lateral walls (48) being located higher in the vicinity of said additional implement than in the vicinity of said mowing implement.

14. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis (2) having lateral ground supporters (4), at least one of said additional implement (8) being located between said lateral ground supporters (4) provided for supporting said chassis (2) during mowing operation, in an operational working position at least one of said additional working implement (8) projecting at least partly rearwardly past said ground supporters (4) and a ground contact zone of said ground supporters (4), said chassis (2) including a chassis base (3) having at least one lateral wall (48a) defining a wall outside and laterally shielding said additional implement (8a), said drive means (20) including a gear stage (26a) located on said wall outside and in a casing shaft (36a).

15. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis having lateral frontal and rear ground supporters (4,5) including at least one frontal and one rear ground wheel (4,5) running in a common track, rear ground supporters (5) being spacedly remote from at least one of said additional implement (8), in side view at least one of said rear ground supporters (5) extending substantially up to said working area of said mowing implement (9), at least one of said rear ground wheel (5) having an outer diameter substantially larger than an outer diameter of at least one of said frontal ground wheel (4).

16. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), substantially independently of said advance motion of said chassis (2), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, on at least one of a top side and at least one lateral side at least two of said working implements (8,9) being substantially entirely shieldingly received in at least one downwardly open casing chamber (37,38), for at least two of said working implements (8,9) a common casing (35) with a single upright partition (40) being provided for subdividing two juxtaposed casing chambers (37,38), at least one of said additional implement (8) being circumferentially surrounded by a cover wall (41a).

17. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9) substantially independently of said advance motion of said chassis (2), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, said mowing implement (9) being directly drive-connected to a drive motor (22) provided also to drive said additional implement (8), a driven shaft (18) of said drive motor (22) and a mowing shaft (18) of said mowing implement (9) being drive-connected with at least one of said additional implement by means of a gear unit (24) located at least partly above at least one of said additional implement (8), at least one gear member (28,32,46) of said gear unit (24) being at least one of;

located in a gear chamber (36) separate from at least one of said working implements (8,9), and

accessible by opening an upper, removable casing cover (44).

18. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said additional implement (8a) being driven by means of a single-stage gear unit (24a), connecting said at least one additional implement (8) with an output shaft (18) of a drive motor (22).

19. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas,

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), and clutch means (30a) for driving at least one of said working implement (8a,9a), said clutch means (30a) being manually operable substantially independently of working positions of said working implement (8a,9a), said clutch means (30a)being provided for discoupling at least one of said additional implement (8a) from at least one of said drive arrangement (20a), and said mowing implement (8a) while simultaneously positively driving said chassis (2) in said advance direction (16) with said drive means (20a), at a rear end of said chassis (2a) a guide handle (21) for manually guiding the lawnmower in operation being provided, both said clutch means (30a) and drive clutch means for discoupling said drive means (20a) from at least one rear ground supporter wheel (5) being manually operable at said guide handle (21).

20. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas,

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), and

a clutch (30a) for driving at least one of said working implements (8a) separate from at least one working shaft (18a,71a) of at least one of said working implements (7a,8a), an operationally disengageable coupling member of said clutch (30a) providing a gear member and a belt pulley (28a) for a driving belt (32a).

21. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said drive means (20a) being provided for commonly positively driving said advance motion of said chassis (2a) and said working motion of at least one of said working implements (8a,9a), both said advance motion and said working motion being affected by a common driven shaft (18a), at least one of said additional implement (8a) being driveable commonly with driving said advance motion, manually operable clutch means (30a) being provided for discoupling at least one of said additional implement (8a) from said drive means (20a) while simultaneously driving said advance motion, said at least one additional implement (8a) being located in front of said mowing implement (9a) in a casing chamber.

22. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, a drive means (20) for driving at least one of said working implements (8,9) substantially independently of said advance motion of said chassis (2), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, and

communication means for passing over and delivering freed vegetation particles substantially without intermediate ground contact from at least one of said additional implement (8a) towards said mowing implement (9a), wherein in said working zone a particle effective working direction of at least one of said additional implement (8a) is directed towards said mowing implement (9a), said working zone being connected with said mowing implement by a free trajectory for the vegetation particles, said mowing implement (9a) providing at least one of a disposal conveyor for conveying the vegetation particles extracted by at least one of said additional implement (8a) only away from said working implements, a disposal conveyor for conveying the vegetation particles in a storage container (84), and a conveyor fan creating a conveying suction with respect to at least one of said additional implement (8a) and a conveying pression away from both said working implements (8a,9a).

23. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement at least one of said working implements (8a) being assembled from at least two implement bodies (80), each of said implement bodies (80) having a base hub body (73a) and between one and a plurality of working tools (70) provided in juxtaposed and substantially diametrically opposite orientation.

24. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8a) having a plurality of juxtaposed working tools (70) axially lined up along a central working axis (11,11a) of said working implement (81) and radially positionally secured with a common securing member (77a), said working tools (70) being mounted to operationally oscillate about an oscillating axis oriented substantially parallel to said working axis.

25. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, at least one of said working implements (8a) having at least one hub body (73a) provided with at least one working tool (70), at least one of said hub body (73a) providing spacedly juxtaposed hub flanges (75a) and bounding at least one receptacle (74a) for said working tool (70), one single working tool (70) being located in an individual one of said at least one receptacle (74a), at least one of said hub flanges (75a) being substantially annular, at least one of said hub flanges (75a) being traversed by at least one securing member (77a).

26. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), in mowing operation at least one of said additional implement (8a) providing a furthest forward front working implement (8a) of the lawnmower, said front working implement (8a) being rotatable about an axis (11a) substantially parallel to said running plane (10a), said chassis (2a) including ground supporters (4a,5) defining lateral running tracks, said additional implement (8a) extending between said running tracks and being located in a casing chamber (37a) separate from said mowing implement (9a).

27. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to perform working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9) substantially independently of said advance motion of said chassis (2), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8) providing at least one of said additional implement (8) positively driveable by said drive means (20) including at least one drive arrangement, at least one of said additional implement (8a) being located behind a front casing wall (39a,65) of said chassis (2a).

28. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), in a highest position at least one of said additional implement (8a) being positioned above said running plane (10a), with respect to said running plane (10a) in said highest position an orbit top of at least one of said additional implement being substantially level with a top of at least one ground supporter wheel (4a) having an axis substantially parallel to said running plane (10).

29. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), both said working implements (8,9) being located directly adjacent to two remote sides of a single intermediate inherently substantially rigid shield unit (40), said working implements (8,9) having work axes (11,12) oriented substantially at right angles with respect to one another, a gear chamber (36a) being provided directly above said additional implement (8a) and connecting said mowing implement with said additional implement.

30. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said chassis (2) having a chassis base (3) and lateral ground supporters (4,5) for continuously displaceably engaging the ground in said running plane (10), at least one of said ground supporters (4,5) defining a central axis (15) and being adjustable in a pivot motion about at least one control axis (53) oriented parallel to said central axis (15).

31. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), said drive means (20) having a gear unit, at least one gear member (28,32,46) of said gear unit (24) being located in a gear chamber (36) separate from at least one of said working implements (8,9) and accessible by opening an upper, removable casing cover (44).

32. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), communication means provided for passing over and delivering freed vegetation particles substantially without intermediate ground contact from at least one of said additional implement (8a) towards said mowing implement (9a), wherein in said working zone a particle effective working direction of at least one of said additional implement (8a) is directed towards said mowing implement (9a), said working zone being connected with said mowing implement by a free trajectory for the vegetation particles, said mowing implement (9a) providing a disposal conveyor for conveying the vegetation particles extracted by at least one of said additional implement (8a) only away from said working implements.

33. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said working implements (8a) having at least one hub body (73a) provided with at least one working tool (70), at least one of said hub body (73a) providing spacedly juxtaposed hub flanges (75a) and bounding at least one receptacle (74a) for said working tool (70), said hub flanges being traversed by at least one securing member (77a).

34. A lawnmower (1) comprising:

a chassis (2) determining a running plane (10) and a main operational advance direction (16) of an operational advance motion;

at least two working devices (6,7) including a mowing device (7) and a ground working device, said working devices (6,7) providing working implements (8,9) including at least one mowing implement (9) and at least one ground working additional implement (8) to operationally perform positively driven working motions, said working implements (8,9) being at least partly separately mounted and determining working areas, and

a drive means (20) for driving at least one of said working implements (8,9), wherein at least two of said working implements (8,9) of at least two of said working devices (6,7) are commonly integrated on said chassis (2), at least one of said additional implement (8a) being located directly behind at least one front casing wall (39a,65) of said chassis (2a), a lateral wall (48) providing a protection shield between said additional implement and a lateral ground supporter (4) of said chassis.