AU2005201940A1

AU2005201940A1 - Wet/dry vacuum

Info

Publication number: AU2005201940A1
Application number: AU2005201940A
Authority: AU
Inventors: David A Parrot
Original assignee: Techtronic Industries Co Ltd
Current assignee: Techtronic Industries Co Ltd
Priority date: 2004-05-19
Filing date: 2005-05-06
Publication date: 2005-12-08
Also published as: RU2005115244A; EP1600090A2; EP1600090A3; US20050257340A1; CN1698520A; MXPA05005362A; JP2005329243A

Description

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Applicant(s): Techtronic Industries Co., Ltd Invention Title: WET/DRY VACUUM The following statement is a full description of this invention, including the best method of performing it known to me/us: -1A- WETIDRY VACUUM BACKGROUND OF THE INVENTION Wet/dry vacuums are commonly used for various cleaning purposes, including cleaning both solid and liquid debris. In general, the wet/dry vacuums utilize a canister into which both solid and liquid debris are drawn. Typically, a plug is found at the bottom of the canister, which can pulled when it is desired to empty the contents of the canister. However, it is often desirable to be able to empty the canister at a level above the bottom of the canister. Accordingly, a wet/dry vacuum that overcomes these deficiencies is needed.

BRIEF DESCRIPTION OF THE FIGURES The invention may be better understood with reference to the following figures and detailed description. The components in the figures are not necessarily to scale, emphasis being placed upon illustrating the principles of the invention.

FIG. 1 is a perspective view of a wet/dry vacuum of a preferred embodiment.

FIG. 2 is a perspective view showing the operation of a wet/dry vacuum of a preferred embodiment.

FIG. 3 is a view of the underside of a lid modified with concentric lips and gaskets to accommodate different diameter buckets.

FIG. 4 is a view of the underside of another lid modified with a different size gasket to accommodate a variety of different diameter buckets.

I DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS By way of introduction, the preferred embodiments described below include a wet/dry vacuum and a method of utilizing the wet/dry vacuum. The wet/dry vacuum preferably includes a base, a handle coupled with the base, a lid coupled with the handle, and a container that is removable from the base. The Sphrase "coupled with," as used herein, means coupled either directly or indirectly via one or more intervening elements. In operation, the container is placed on the base. As the handle is rotated towards the rear of the base, the handle secures the container to the base by lowering the lid onto the container. In addition, the wet/dry vacuum is designed so that it utilizes a conventional bucket, which preferably is a five gallon bucket.

Fig. 1 shows a perspective view of a preferred embodiment of a wet/dry vacuum 8. The vacuum generally includes a base 10, a handle 12, a lid 14, and a container 16. The base 10 includes a lower portion 70 and an upper portion 72. In the preferred embodiment, the lower portion 70 comprises a support plate 18 with an upper surface 20 and a lower surface 22. The preferable shape of the support plate 18 is rounded, but alternate shapes such as square or rectangular may be utilized as well. The support plate 18 also has a front 24 and a back 26.

In the preferred embodiment, the upper portion 72 comprises a rear support member 28 with two sides 52. In the preferred embodiment, the back of the support plate 18 is attached to the rear support member 28, preferably at the lower end of the rear support member 28. The support plate 18 and the rear P support member 28 may either be formed integrally as shown or as separate pieces that are fastened together using bolts, clips, pins or other fasteners. The preferable shape of the rear support member 28 is rectangular, but alternate shapes such as square or circular may be utilized as well. The base 10 is c 5 preferably formed from plastic. The base 10 can also be formed from alternative Smaterials such as ceramic, wood or metal. In operation of the wet/dry vacuum 8, a container 16 is inserted and placed on the base 10. The container 16 is likewise removable from the base 10 once operation of the wet/dry vacuum 8 is complete.

In the preferred embodiment of the invention, the wet/dry vacuum 8 is constructed to be operated with a five gallon bucket to be used as the container 16. The container 16 is preferably formed from PVC. The container 16 can also be formed from alternative plastics or other lightweight materials. A five gallon PVC bucket is the preferred container because of its versatility, durability, and disposability. Five gallon PVC buckets are commonly found (especially on construction worksites and around many homes), they are inexpensive, and they can also be purchased at a wide variety of hardware stores. Other advantages of five gallon PVC buckets are that they are sealable and also recyclable.

Alternatively, the wet/dry vacuum 8 can be constructed so that it can be operated with various sizes of PVC buckets other than the preferred size of five gallons.

As will be explained, the operation for sealing the vacuum to the bucket may allow for different size buckets to be used with the same vacuum.

p Also in the preferred embodiment, a plurality of wheels are coupled to the

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lower surface 22 of the support plate 18, which allow the wet/dry vacuum 8 to be easily moved. Preferably, two domed rear caster wheels 30 are coupled at opposite sides to the lower surface 22 of the support plate 18 at the back of the c 5 support plate 18. The rear caster wheels 30 are preferably formed from rubber, Sbut can also be formed from alternate materials such as plastic or metal. The domed feature of the rear caster wheels 30 helps prevent the rubber of the wheels from scuffing any surfaces that the wheels may come in contact with, such as walls, sideboards, etc., thus making the wet/dry vacuum 8 home friendly.

Also coupled to the lower surface 22 of the support plate 18 at the plate's front end is a front wheel 32. Preferably, the front wheel 32 is located in the middle of the support plate 18, and is formed from a ball and socket construction, which enables the wet/dry vacuum 8 to easily change direction as it is being moved.

A handle 12 is coupled with the upper portion 72 of the base Preferably, the handle 12 is attached to the upper end of both of the two sides 52 of the rear support member 28 of the base 10. Preferably, the handle 12 is rotatably coupled with each side 52 of the rear support member 28 with a pivot S34 that allows the handle 12 to have rotational motion relative to the base The handle 12 is preferably comprised of a grip portion 38 and two supports The grip portion 38 is coupled at each of its ends to either one of the supports In the preferred embodiment, the grip portion 38 is formed with an overmold construction, which provides a secure grip and also adds an aesthetic feature to o the handle 12 of the wet/dry vacuum 8. Preferably, the upper portion of each o support 40 is coupled with the grip portion 38, and the lower portion of each support 40 is coupled with the base 10. In addition, the two supports 40 may also be coupled with each other via a support bar 42 located in between the two C 5 members. The handle 12 is preferably formed from plastic.

SA lid 14 is coupled with the handle 12 so that rotation of the handle 12 simultaneously moves the positioning of the lid 14 relative to the base Preferably, the lid 14 is rotatably coupled with the support bar 42 of the handle 12 with a pivot 44. The lid 14 has a lip 54 that allows the lid 14 to engage the bucket 16, for example by way of locking or snapping into place on the bucket 16.

However, because a vacuum is created, the lip 54 is not necessary to secure the lid 14 to the bucket 16. In the preferred embodiment, the lid 14 is comprised of a housing 46 for a vacuum motor (not shown) and an attachment 48 for a hose that is coupled with the housing 46. A foam rubber gasket 50 is preferably attached around the bottom of the motor housing 46, which provides a tight seal with the container 16 when the lid 14 is lowered onto the container 16 for operation of the wet/dry vacuum 8.

Fig. 2 shows the operation of the wet/dry vacuum of a preferred embodiment. To operate the wet/dry vacuum 8, a container 16 needs to be inserted and placed on a base 16 of the wet/dry vacuum 8. In operation, the handle 12 and the lid 14 of the wet/dry vacuum 8 can be moved between two positions. In the first position 210, the handle 12 is positioned forward from the o rear support member 28 of the base 10, whereas the lid 14 is positioned so that when the container 16 is inserted in the base 10, the lid 14 is located at a C)position above the container 16 and is also not in contact with the container 16.

To place the handle 12 and the lid 14 in the second position, the handle 12 is C' 5 rotated towards the rear of the base 10 until it is locks into place in its second Sposition 220. As the handle 12 is rotated on the pivots 34, the lid 14 is simultaneously lowered over the container 16. When the handle 12 is locked into its second position 220, the lid 14 is lowered to the point where it is locked onto the container 16. The opening of the lid 14 along with the rubber gasket fits over the edge of the container 16 to affix the lid 14 to the container 16 (as shown in Fig. which allows for the operation of the wet/dry vacuum 8.

Different size buckets may be used with a single vacuum by making certain modifications to the vacuum. Specifically, by allowing a wide range of rotational motion of the handle 12 on the pivots 34, buckets of different heights may accommodated between the lid 14 and the base 16. As shown in Fig. 3, the lid 14 may also be modified by having a series of concentric lips 54' that allow the lid 14 to engage different diameter buckets. Further, the gasket 50 may be provided in between each of the concentric lips 54' on the underside of the lid 14 lid to provide effective sealing for the different size buckets. Of course, any number of concentric lips and gaskets can be used. As an altemrnative, since the lips 54' are not necessary to secure the lid 14 to the bucket, a lid 14 having a larger gasket 50 a greater difference between the inner 56 and outer 58 o gasket diameters) on its underside, as shown in Fig. 4, will also allow for different

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O diameter buckets to be used with the same vacuum. Again, different size Sgaskets can be used to accommodate a varying range of bucket diameters.

Various embodiments of the invention have been described and illustrated. However, the description and illustrations are by way of example Sonly. Many more embodiments and implementations are possible within the scope of this invention and will be apparent to those of ordinary skill in the art.

Therefore, the invention is not limited to the specific details, representative embodiments, and illustrated examples in this description. Accordingly, the invention is not to be restricted except in light necessitated by the accompanying claims and their equivalents.

It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the conmmon general knowledge in the art, in Australia or any other country.

In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

Claims

1. A wet/dry vacuum comprising: a base having an upper and a lower portion; 0 5 a handle pivotably mounted to said upper portion of said base, said handle Cl being moveable between a first and second position; Sa lid incorporating a vacuum motor housing, said lid being attached to said handle so that said lid moves to a first lid position when said handle is in said first position and to a second lid position when said handle is in said second position; 0 and a container detachably mounted to said base, wherein said container is removeable when said handle is in said first position and is secured when said handle is in said second position.

2. The wet/dry vacuum according to claim 1, wherein said container is a conventional five gallon construction bucket.

3. The wet/dry vacuum according to claim 2, wherein said container is manufactured from PVC.

4. The wet/dry vacuum according to claim 1, further comprising at least two caster wheels coupled with a bottom surface of said base.

5. The wet/dry vacuum according to claim 4, wherein said at least two wheels are comprised of rubberized tread. o

6. The wet/dry vacuum according to claim 5, wherein dome covers are O coupled with said at least two wheels, said dome covers being operable to cover said rubberized tread of said wheels.

7. The wet/dry vacuum according to claim 1, wherein said handle is an c 5 overmold handle.

In S8. The wet/dry vacuum according to claim 1, wherein a seal is coupled with an outer perimeter of said lid.

9. The wet/dry vacuum according to claim 8, wherein said seal is manufactured from foam rubber.

10. The wet/dry vacuum according to claim 1, wherein said vacuum unit is comprised of a motor and a hose coupled with said motor.

11. The wet/dry vacuum according to claim 1, wherein a pivot is utilized to couple said lid to said handle.

12. The wet/dry vacuum according to claim 4, further comprising a ball-in- socket wheel coupled with said base.

13. A method of operating a wet/dry vacuum, the method comprising: providing a vacuum unit, said vacuum unit comprising a base, a pivotable handle coupled with said base, and a lid coupled with said handle, wherein said lid houses a vacuum motor; inserting a container onto said base; and rotating said handle towards the rear of said unit, wherein the rotation of said handle lowers and secures said lid to said container. 1 o

14. The method according to claim 13, wherein said container is a \O conventional five gallon construction bucket.

The method according to claim 14, wherein said container is manufactured from PVC. C 5

16. A wet/dry vacuum comprising: In Sa base having an upper and a lower portion; a handle mounted to said upper portion of said base; and 0 a bucket releasably attached to said base.

17. The wet/dry vacuum according to claim 16, wherein said bucket is a construction site bucket.

18. The wet/dry vacuum according to claim 16, further comprising at least two caster wheels coupled with a bottom surface of said base.

19. The wet/dry vacuum according to claim 18, wherein said at least two wheels are comprised of rubberized tread. The wet/dry vacuum according to claim 19, wherein dome covers are coupled with said at least two wheels, said dome covers being operable to cover said rubberized tread of said wheels.

20 Dated this 5th day of May 2005 2O TECHTRONIC INDUSTRIES CO., LTD By their Patent Attorneys GRIFFITH HACK Fellows Institute of Patent and Trade Mark Attorneys of Australia