Vacuum appliance filter assemblies and associated vacuum systems
First Claim
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1. A filter for use with a wet/dry vacuum cleaner, the filter comprising:
- a central longitudinal axis;
a cap having a top face and an opposite bottom face, and an annular hole of a diameter less than the diameter of the cap extending through the center of the cap about the central longitudinal axis of the filter, the cap including one or more integrally formed handles, the one or more handles extending over the outer edge of the filter such that the diameter between the outer edges of the handles is greater than the outer diameter of the filter;
a support strut on the top face of the cap; and
a filter positioned below the cap and extending in a circumferential path that forms a closed, interior path, the filter being integrally formed with the cap portion to form a single filter assembly,wherein the centrally located annular hole is circumscribed by a retaining structure,wherein the cap is comprised of a flexible material bonded to the filter, andwherein when the cap is in association with a filter cage of the wet/dry vacuum appliance, the cap seals on a plane above the top surface of the filter.
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Abstract
Vacuum cleaner filters, in particular replaceable vacuum cleaner filters suitable for both dry and wet/dry type vacuum cleaners are disclosed, as well as systems incorporating the use of such filters and methods for their use. The filters include a plurality of adjacently positioned pleats arranged in a closed circumferential, cylindrically-shaped path, a top end cap having a central orifice capable of constricting a post on a vacuum filter cage, and optionally a molded end ring oppositely-spaced from the top end cap for engagement with the motor housing of a vacuum cleaner.
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Citations
23 Claims
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1. A filter for use with a wet/dry vacuum cleaner, the filter comprising:
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a central longitudinal axis; a cap having a top face and an opposite bottom face, and an annular hole of a diameter less than the diameter of the cap extending through the center of the cap about the central longitudinal axis of the filter, the cap including one or more integrally formed handles, the one or more handles extending over the outer edge of the filter such that the diameter between the outer edges of the handles is greater than the outer diameter of the filter; a support strut on the top face of the cap; and a filter positioned below the cap and extending in a circumferential path that forms a closed, interior path, the filter being integrally formed with the cap portion to form a single filter assembly, wherein the centrally located annular hole is circumscribed by a retaining structure, wherein the cap is comprised of a flexible material bonded to the filter, and wherein when the cap is in association with a filter cage of the wet/dry vacuum appliance, the cap seals on a plane above the top surface of the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A filter for use with a wet/dry vacuum appliance, the filter comprising:
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a cap having a centrally-located opening extending therethrough; an annular end ring; a filter positioned between the cap and the end ring and extending in a circumferential path that forms a closed, interior region; and a stem cover defining an inner region circumscribing the centrally-located opening, wherein the cap and the end ring are comprised of a flexible material bonded to the filter. - View Dependent Claims (20, 21, 22, 23)
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Specification