Axle and wheel mounting system for a wet/dry vacuum cleaner

• US 6,494,544 B1
• Filed: 09/07/2000
• Issued: 12/17/2002
• Est. Priority Date: 09/07/2000
• Status: Expired due to Term

• Current Assignee: Shop-Vac Corporation (Hangzhou Great Star Industrial Company Limited)
• Original Assignee: Shop-Vac Corporation (Hangzhou Great Star Industrial Company Limited)
• Inventors: Martinez, David, Griffin, Ronald, Berfield, Robert C.
• Primary Examiner(s): Morano, S. Joseph
• Assistant Examiner(s): NGUYEN, LONG B
• Application Number:
  US09/657,156
• Time in Patent Office: 831 Days
• Field of Search: 301/124.1, 301/125, 301/126, 301/131, 301/132, 301/111.06, 301/111.05, 301/122, 301/5.1, 301/5.301, 16/45, 16/46
• US Class Current: 301/111.01
• CPC Class Codes: A47L 9/0009 Storing devices winding devices for electric cables A47L9/26; Supports, stands or holders
• CPC Class Codes: A47L 9/009 Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles
• CPC Class Codes: B60B 37/10 the wheels being individually rotatable around the axles

Abstract

A wheel mounting system for a wet/dry vacuum cleaner is disclosed. A system provides a wet/dry vacuum cleaner base having a plurality of mounting surfaces extending therefrom. First and second wheels are mounted to first and second stub shafts which are inserted through at least two of the plurality of bearing surfaces and secured thereto using set screws. Flanges on outer ends of the stub shafts secure the wheels between the flanges and wheel wells extending from the base of the vacuum cleaner. A reinforcing shaft can be telescopingly received within the first and second stub shafts in order to enable the vacuum cleaner base to support relatively heavy loads.

Claims

1. A wet/dry vacuum cleaner wheel mounting system, comprising:

a wet/dry vacuum cleaner base;

a plurality of bearing surfaces extending from the base;

a uniformly shaped shaft passing through the plurality of bearing surfaces, the shaft including flanges at first and second ends;

first and second wheels mounted to the shaft between the shaft flanges and the base; and

a fastener secured through each bearing surface and frictionally engaging the shaft.

2. The wet/dry vacuum cleaner wheel mounting system of claim 1 wherein first and second stub shafts are provided, each stub shaft including a flange at a first end, and wherein the first and second wheels are mounted to the first and second stub shafts, respectively.

3. The wet/dry vacuum cleaner wheel mounting system of claim 2 wherein the first and second stub shafts are hollow, and further including a reinforcing shaft telescopingly received within the first and second stub shafts.

5. The wet/dry vacuum cleaner wheel mounting system of claim 2 further including first and second wheel wells extending from the base, each wheel being mounted on one of the stub shafts between one of the shaft flanges and one of the wheel wells.

6. The wet/dry vacuum cleaner wheel mounting system of claim 1 wherein the base further includes first and second mounts adapted to connect casters to the first and second mounts.

8. The wet/dry vacuum cleaner wheel mounting system of claim 1 wherein the base and bearing surfaces are integrally molded together.

4. A wet/dry vacuum cleaner wheel mounting system comprising:

a wet/dry vacuum cleaner base;

a plurality of bearing surfaces extending from the base;

a shaft passing through the plurality of bearing surfaces, the shaft including flanges at first and second ends;

first and second wheels mounted to the shaft between the shaft flanges and the base; and

a fastener secured through each bearing surface and frictionally engaging the shaft;

wherein first and second stub shafts are provided, each stub shaft including a flange at a first end, and wherein the first and second wheels are mounted to the first and second stub shafts, respectively, and wherein four bearing surfaces extend from the base, each stub shaft being mounted in two of the bearing surfaces.

7. The wet/dry vacuum cleaner wheel mounting system of claim 4 wherein one of the bearing surfaces mounting each stub shaft includes a countersunk recess adapted to receive a head of the fastener.

9. A wet/dry vacuum cleaner wheel mounting system comprising:

a wet/dry vacuum cleaner base;

a plurality of bearing surfaces extending from the base;

a shaft passing through the plurality of bearing surfaces, the shaft including flanges at first and second ends;

first and second wheels mounted to the shaft between the shaft flanges and the base;

a fastener secured through each bearing surface and frictionally engaging the shaft; and

a tool mounting tool caddy extending from the base, the plurality of bearing surfaces extending from the tool mounting tool caddy.

10. A method of assembling a wet/dry vacuum cleaner wheel base comprising the steps of:

providing a wet/dry vacuum cleaner wheel base having a plurality of bearing surfaces extending therefrom;

mounting a wheel to a uniformly shaped shaft;

inserting the shaft through at least two of the bearing surfaces; and

securing a fastener through at least one of the bearing surfaces and against the shaft to connect the shaft and wheel to the base.

11. A method of assembling a wet/dry vacuum cleaner wheel base comprising:

providing a wet/dry vacuum cleaner wheel base having a plurality of bearing surfaces extending therefrom;

mounting a wheel to a uniformly shaped shaft;

inserting the shaft through at least two of the bearing surfaces;

securing a fastener through at least one of the bearing surfaces and against the shaft to connect the shaft and wheel to the base; and

mounting a second wheel to a second shaft, inserting the second shaft through at least two of the bearing surfaces, and securing a fastener through at least one of the bearing surfaces and against the shaft to connect the second shaft and second wheel of the base.

12. The method of claim 11 wherein the first and second shafts are hollow and wherein the method further includes the step of inserting a reinforcing shaft into the first and second shafts.

13. The method of claim 11 wherein each shaft includes a flange at a first end thereof, and wherein the mounting and inserting steps are performed such that each wheel is mounted between a flange shaft and the wheel base.

14. A method of assembling a wet/dry vacuum cleaner wheel base comprising the steps of:

providing a wet/dry vacuum cleaner wheel base having a plurality of bearing surfaces extending therefrom;

mounting a wheel to a uniformly shaped shaft;

inserting the shaft through at least two of the bearing surfaces; and

securing a fastener through at least one of the bearing surfaces and against the shaft to connect the shaft and wheel to the base;

wherein the providing step is performed by integrally molding the wheel base and plurality of bearing surfaces together.

15. A wet/dry vacuum cleaner wheel mounting kit, comprising:

a wet/dry vacuum cleaner base;

a first axle adapted to be mounted to the base to support a first load;

a second axle adapted to be mounted to the base to support a second load, the second load being greater than the first load; and

first and second wheels adapted to be mounted to one of the first and second axles.

16. The wet/dry vacuum cleaner wheel mounting kit of claim 15 wherein the first axle includes first and second stub shafts.

17. The wet/dry vacuum cleaner wheel mounting kit of claim 16 wherein the second axle includes a reinforcing shaft that is telescopingly received within the first and second stub shafts.

18. The wet/dry vacuum cleaner wheel mounting kit of claim 15 further including a single mounting means adapted to interchangeably mount the first or second axles to the base.

19. The wet/dry vacuum cleaner wheel mounting kit of claim 18 wherein the mounting means includes a plurality of legs extending from the base, each leg including an aperture, the apertures being adapted to receive at least one of the first and second axles therein.

20. The wet/dry vacuum cleaner wheel mounting kit of claim 19 further including a plurality of fasteners adapted to be secured through the plurality of legs to frictionally secure at least one of the first and second axles to the base.