Floor cleaning apparatus having a rotating brush roller

• US 5,920,939 A
• Filed: 07/23/1997
• Issued: 07/13/1999
• Est. Priority Date: 07/23/1997
• Status: Expired due to Fees

• Current Assignee: Firma Fedag
• Original Assignee: Firma Fedag
• Inventors: Worwag, Peter
• Primary Examiner(s): Spisich, Mark
• Assistant Examiner(s): Snider, Theresa T.
• Application Number:
  US08/899,080
• Time in Patent Office: 720 Days
• Field of Search: 15/41.1, 15/43, 15/44, 15/45, 15/48, 15/48.1, 15/49.1, 15/52.1, 15/349, 15/79.1, 15/79.2, 15/83
• US Class Current: 15/41.1
• CPC Class Codes: A46B 13/001 Cylindrical or annular brush bodies
• CPC Class Codes: A47L 11/33 having means for storing dirt
• CPC Class Codes: A47L 11/4013 Contaminants collecting devices, i.e. hoppers, tanks or the like
• CPC Class Codes: A47L 11/4025 Means for emptying
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4052 Movement of the tools or the like perpendicular to the cleaning surface
• CPC Class Codes: A47L 11/4069 Driving or transmission means for the cleaning tools
• CPC Class Codes: A47L 11/4072 Arrangement of castors or wheels
• CPC Class Codes: A47L 11/4097 Means for exhaust-air diffusion; Exhaust-air treatment, e.g. air purification; Means for sound or vibration damping
• CPC Class Codes: A47L 9/0411 driven by electric motor

Abstract

A floor cleaning apparatus having a brush chamber formed in a main housing is provided. The brush chamber has a dirt inlet slot that faces the floor that is to be cleaned and extends over the width of the brush chamber transverse to the direction of work. Rotatably mounted in the brush chamber is a brush roller that is driven by a motor. The bristles of the brush roller extend outwardly through the dirt inlet slot. The brush chamber communicates via a connecting channel with a dirt collecting chamber. To ensure a reliable sweeping-up of dirt and a simple emptying of the apparatus, the dirt collecting chamber directly adjoins the main housing and is formed in an independent chamber housing that is separable from the main housing. The chamber housing has a sweeping ramp that leads to the dirt collecting chamber and a front edge that is remote from the dirt collecting chamber, extends transverse to the direction of work, and is disposed at approximately the path of the bristles of the brush roller.

Claims

1. A floor cleaning apparatus comprising:

a main housing that includes a brush chamber provided with a dirt inlet slot that is constructed to face a floor that is to be cleaned, said dirt inlet slot extending over the width of said brush chamber transverse to a direction of work;

a brush roller that is rotatably mounted in said brush chamber and is driven by a motor, said brush roller being provided with bristles that project outwardly through said dirt inlet slot;

a chamber housing that is independent of and separable from said main housing, said chamber housing being provided with a dirt collecting chamber that communicates with said brush chamber via a connecting channel, said chamber housing further being provided with a sweeping ramp that rises in a direction toward said dirt collecting chamber, said sweeping ramp having a front edge that is remote from said dirt collecting chamber, extends transverse to said direction of work, and is disposed at approximately the level of a path of said bristles of said brush roller, wherein said main housing is upwardly pivotable relative to said chamber housing over a given angle about a pivot axis that extends approximately parallel to an axis of rotation of said brush roller; and

means for supporting said chamber housing on said floor, wherein said pivot axis is disposed between said brush roller and said means for supporting said chamber housing.

2. A floor cleaning apparatus according to claim 1, which includes a guide shaft having a retaining bracket that extends over the main housing, wherein said pivot axis is formed by said retaining bracket.

3. A floor cleaning apparatus according to claim 2, wherein said pivot axis of said retaining bracket is disposed on that side of an overall center of gravity of said floor cleaning apparatus that faces said main housing.

4. A floor cleaning apparatus according to claim 1, wherein said motor is disposed above said brush roller in the vicinity of said axis of rotation thereof, preferably over said axis of rotation.

5. A floor cleaning apparatus according to claim 1, wherein said sweeping ramp is disposed approximately tangential to said path of said bristles of said brush roller.

6. A floor cleaning apparatus according to claim 1, wherein said sweeping ramp, remote from said front edge thereof, is provided with a step that delimits said dirt collecting chamber.

7. A floor cleaning apparatus according to claim 6, wherein said front edge of said sweeping ramp delimits said dirt inlet slot.

8. A floor cleaning apparatus according to claim 1, wherein said dirt inlet slot extends from an underside of said apparatus that faces said floor to a forward end wall of said main housing as viewed in said direction of work.

9. A floor cleaning apparatus according to claim 8, wherein said bristles of said brush roller project beyond a plane of said forward end wall.

10. A floor cleaning apparatus according to claim 8, wherein said front edge of said sweeping ramp, and an edge of said end wall of said main housing, delimit said dirt inlet slot and are disposed in a plane that forms an angle with said floor of preferably 45°

.

11. A floor cleaning apparatus according to claim 1, wherein said connecting channel is delimited on the one hand by said sweeping ramp and on the other hand by said main housing.

12. A floor cleaning apparatus according to claim 1, wherein said chamber housing extends partially over said main housing.

13. A floor cleaning apparatus according to claim 1, wherein rollers are disposed on an underside of said chamber housing that faces said floor, preferably being disposed in an end portion of said chamber housing that is remote from said main housing.

14. A floor cleaning apparatus according to claim 1, wherein said main housing is movable relative to said chamber housing about a tilt axis that is disposed transverse to said pivot axis.

15. A floor cleaning apparatus according to claim 1, wherein air venting slots are disposed in said chamber housing and communicate with said dirt collecting chamber.

16. A floor cleaning apparatus according to claim 1, which includes snap-type closure means for securing said chamber housing to said main housing.