Suction cleaner power nozzle construction

• US 4,167,801 A
• Filed: 02/24/1978
• Issued: 09/18/1979
• Est. Priority Date: 02/24/1978
• Status: Expired due to Term

• Current Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Original Assignee: Royal Appliance Manufacturing Company (Techtronic Industries Company Limited)
• Inventors: Erbor, Stanley E., Kirschensteiner, John P.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/880,754
• Time in Patent Office: 571 Days
• Field of Search: 15/354, 15/377, 15/391, 15/416
• US Class Current: 15/354
• CPC Class Codes: A47L 9/0411 driven by electric motor
• CPC Class Codes: A47L 9/0494 Height adjustment of dust-loosening tools

Abstract

A suction cleaner power nozzle adapted to be mounted on the end of a cleaning wand has a rotating cleaning brush driven by an electric motor connected by a belt to the center of the brush to provide uniform forces on the brush end support bearings. A three-section plate forms the nozzle housing closure and base. One section of the plate covers the motor compartment and a second section of the plate covers the brush adjustment means. Each of these plates is held in place by a simple removable screw. A third section of the plate covers the suction duct and brush suction chamber and is removably mounted on the housing by spring biased clips to provide easy access to the suction duct and chamber. A pair of front nozzle wheels are rotatably journaled on the ends of a lever which is pivotally mounted on the housing. A threaded manually operated screw is operatively engaged with the lever to obtain numerous adjustment positions of the brush and suction chamber with respect to a surface being cleaned. The nozzle is connected to the wand of a suction cleaner by a swivel connection. The swivel connection has a pair of trunnions which are pivotally mounted in a pair of sockets by low friction bushings. A fabric sealing liner is placed between the swivel connection and the nozzle housing to decrease the sliding friction and to improve the air seal therebetween.

Claims

1. In suction cleaner power nozzle construction the combination of:

(a) front, rear, side and top walls forming a generally rectangular nozzle housing;

(b) partition means in the housing forming an elongated suction chamber extending transversely across the front of the housing and forming a centrally extending suction duct communicating with said suction chamber, and also forming first and second compartments located on opposite sides of the suction duct and rearwardly of the suction chamber;

(c) rotatable brush means journaled in the suction chamber;

(d) motor drive means in the first compartment operatively connected with the brush means for rotating said brush means, said motor drive means including a shaft extending through the partition means and into the suction duct and belt means engaging the shaft in said suction duct and engaging the midpoint of the brush means for operatively driving said brush means;

(e) lever means pivotally mounted in the housing provided with a pair of wheels rotatably mounted on the ends of the lever means supporting the nozzle housing for movement across a surface to be cleaned;

(f) adjusting means engaged with the lever means operable to adjust the wheel location with respect to the nozzle housing;

(g) closure plate means spaced from the top housing wall and removably engaged with the front, rear and side housing walls, said closure plate means comprising three separate plates, two of which form closures for the first and second housing compartments, and the third of which forms a closure for the suction duct; and

(h) swivel connector means engaged with the housing for connecting said housing with a suction cleaner wand, the swivel connector means being provided with a fabric liner to decrease the sliding friction and to improve the air seal between relatively movable parts of the swivel connector means and the nozzle housing.

2. The construction defined in claim 1 in which the housing has a socket formed therein, and in which the swivel connector means has a horizontal cylindrical pivot sleeve rotatably engaged in said socket;

in which the housing has a pair of spaced, horizontally aligned bearing sleeves communicating with the socket;

in which the swivel connector means has a trunnion at each end of the pivot sleeve; and

in which the trunnions are telescopically received in the bearing sleeves.

3. The construction defined in claim 2 in which the fabric liner is formed of a felt material;

and in which the liner is mounted on and extends about the cylindrical pivot sleeve.

4. The construction defined in claim 2 in which a friction reducing bushing is mounted on each of the pivot sleeve trunnions;

and in which the bushings are telescopically received within the bearing sleeves.

5. The construction defined in claim 2 in which the fabric liner has an elongated rectangular configuration;

and in which an opening is formed in the center of the strip and a U-shaped cutout is formed in each end of said strip.

6. The construction defined in claim 1 in which the third closure plate is generally T-shaped having a straight leg portion and an end portion extending transversely to said straight leg portion;

in which the straight leg portion covers the suction duct and the transverse end portion covers the suction chamber; and

in which openings are formed in the transverse end portion through which the brush means extends for cleaning a surface.

7. The construction defined in claim 1 in which spring biased clip means is mounted on the third closure plate;

and in which the clip means releaseably engages the rear wall of the housing to permit removal of said third plate from the housing.

8. The construction defined in claim 1 in which the first and second compartments are provided with first and second posts, respectively;

and in which first and second screws engage the first and second posts, respectively, to removably mount said first and second plates on the housing.

9. The construction defined in claim 1 in which the wheel adjusting means includes a screw threadably mounted on and extending through the housing into the second compartment;

and in which the adjustment screw has an inner end engaged with the lever means, and knob means mounted on the outer end for manually adjusting said screw.

10. In suction cleaner power nozzle construction having a generally rectangular nozzle housing with an open bottom;

partition means in the housing forming an elongated suction chamber extending transversely across the front of the housing and forming a centrally extending suction duct communicating with said suction chamber, and also forming first and second compartments located on opposite sides of the suction duct and rearwardly of the suction chamber;

closure plate means removably engaged with the housing for closing the housing open bottom, said plate means comprising three separate plates, two of which form closures for the first and second housing compartments, and the third of which forms a closure for the suction duct; and

spring-biased clip means mounted on the third closure plate and releasably engaging the housing to permit removal of said third plate from the housing.

11. The construction defined in claim 10 in which the third closure plate is generally T-shaped having a straight leg portion and an end portion extending transversely to said straight leg portion;

in which the straight leg portion covers the suction duct and the transverse end portion covers the suction chamber; and

in which openings are formed in the transverse end portion.

12. The construction defined in claim 10 in which the first and second compartments are provided with first and second posts, respectively;

and in which first and second screws engage the first and second posts, respectively, to removably mount said first and second plates on the housing.

13. The construction defined in claim 10 in which the housing is formed with a socket;

in which the housing further includes swivel connector means for connecting the housing with a suction cleaner wand;

in which the swivel connector means includes a horizontal cylindrical pivot sleeve rotatably mounted in the socket;

in which the housing has a pair of spaced, horizontally aligned bearing sleeves communicating with the socket;

in which the swivel connector means has a trunion at each end of the pivot sleeve; and

in which the trunions are telescopically received in the bearing sleeves.

14. The construction defined in claim 13 in which a fabric liner formed of a felt material is mounted on and extends about the cylindrical pivot sleeve.

15. The construction defined in claim 14 in which the fabric liner has an elongated rectangular configuration;

and in which an opening is formed in the center of the strip and a U-shaped cutout is formed in each end of the strip.

16. The construction defined in claim 13 in which a friction-reducing bushing is mounted on each of the pivot sleeve trunions;

and in which the bushings are telescopically received within the bearing sleeves.

17. The construction defined in claim 10 in which lever means is pivotally mounted in the housing and is provided with a pair of wheels rotatably mounted on the ends of the lever means for supporting the nozzle housing for movement across a surface to be cleaned;

in which adjusting means is engaged with the lever means operable to adjust the wheel location with respect to the nozzle housing;

in which the wheel adjusting means includes a screw threadably mounted on and extending through the housing rear wall into the second compartment; and

in which the adjustment screw has an inner end engaged with the lever means, and knob means mounted on the outer end for manually adjusting said screw.

18. The construction defined in claim 10 in which a rotatable brush is journaled in the suction chamber;

in which motor drive means is mounted in the first compartment and operatively connected with the brush for rotating said brush;

in which the motor drive means includes a shaft which extends through the partition means and into the suction duct; and

in which a belt engages the shaft in the suction duct and engages the midpoint of the brush for operatively driving said brush.

19. In suction cleaner power nozzle construction the combination of:

(a) front, rear, side and top walls forming a generally rectangular nozzle housing;

(b) partition means in the housing forming an elongated suction chamber extending transversely across the front of the housing and forming a centrally extending suction duct communicating with said suction chamber, and also forming first and second compartments located on opposite sides of the suction duct and rearwardly of the suction chamber;

(c) rotatable brush means journaled in the suction chamber;

(d) motor drive means in the first compartment operatively connected with the brush means for rotating said brush means;

(e) lever means pivotally mounted in the housing provided with a pair of wheels rotatably mounted on the ends of the lever means supporting the nozzle housing for movement across a surface to be cleaned;

(f) adjusting means engaged with the lever means operable to adjust the wheel location with respect to the nozzle housing;

(g) closure plate means spaced from the top housing wall and removably engaged with the front, rear and side housing walls, said closure plate means comprising three separate plates, two of which form closures for the first and second housing compartments, and the third of which forms a closure for the suction duct;

(h) spring biased clip means mounted on the third closure plate and releasably engaging the rear wall of the housing to permit removal of said third plate from the housing; and

(i) swivel connector means engaged with the housing for connecting said housing with a suction cleaner wand, the swivel connector means being provided with a fabric liner to decrease the sliding friction and to improve the air seal between relatively movable parts of the swivel connector means and the nozzle housing.