# US 10,368,706 B1 · Vacuum filter having annular catch > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,368,706 B1 - Document ID: US10368706B1 - Status: Granted - Kind: B1 - Application number: 16/037,853 - Filed: 2018-07-17 - Granted: 2019-08-06 - Earliest claimed: 2018-07-17 - Assignees: Shop Vac Corporation - Applicants: Shop Vac Corporation - Inventors: Craig A. Seasholtz; Kurt Westbrook; Jason Gottschall - Web page: https://patentgrep.com/patent/US10368706B1 ## CPC - A47L 9/1683: {Dust collecting chambers; Dust collecting receptacles} - A47L 5/365: {of the vertical type, e.g. tank or bucket type} - A47L 7/0028: {Security means, e.g. float valves or level switches for preventing overflow} - A47L 7/0042: {Gaskets; Sealing means} - B01D 46/0005: {Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence)} - B01D 46/001: {Means for connecting filter housings to supports} - B01D 46/2414: {End caps including additional functions or special forms} - B01D 46/521: {using folded, pleated material} - A47L 9/127: {tube- or sleeve-shaped} - A47L 9/1608: {Cyclonic chamber constructions} - A47L 9/1675: {movable, revolving or rotary} - B01D 2265/028: Snap, latch or clip connecting means - B01D 2279/55: for cleaning appliances, e.g. suction cleaners - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A filter for a vacuum cleaner includes a top having an open center, a bottom plate having an outermost edge, a center, an inside surface facing towards the top, an outside surface facing away from the top, and a catch extending from the inside surface annularly around the center, filter material being secured between the top and bottom plate. An adaptor for a filter cage or the filter cage itself includes a radial retention ring that engages the catch of the filter. ## Claims ### Claim 1 A filter for a vacuum cleaner comprising: a top having an open center; a bottom plate having an outermost edge, a center, an inside surface facing towards the top and an outside surface facing away from the top, and a catch extending from the inside surface annularly around the center; filter material secured between the top and the bottom plate. ### Claim 2 (depends on 1) The filter of claim 1, wherein the catch extends from the inside surface around the center continuously. ### Claim 3 (depends on 1) The filter of claim 1, wherein the catch extends from the inside surface around the center discontinuously. ### Claim 4 (depends on 1) The filter of claim 1, further comprising a handle hinged to the outside surface of the bottom plate. ### Claim 5 (depends on 4) The filter of claim 4 wherein the handle is located adjacent to the center of the bottom plate. ### Claim 6 (depends on 1) The filter of claim 1, wherein the bottom plate further comprises a locking ring between the outermost edge and the center, and wherein the catch extends toward the top from the locking ring. ### Claim 7 (depends on 1) The filter of claim 1, wherein the catch has a mating face inclined in a first direction relative to the inside surface and an inclined end inclined in a second direction relative to the inside surface. ### Claim 8 (depends on 7) The filter of claim 7, wherein the mating face is at a 45° angle relative to the inside surface. ### Claim 9 (depends on 1) The filter of claim 1, wherein the bottom plate has a depressed center area at the center. ### Claim 10 (depends on 9) The filter of claim 9, wherein a center orifice is provided in the depressed center area. ### Claim 11 (depends on 6) The filter of claim 6, wherein a handle is hinged to the locking ring. ### Claim 12 (depends on 11) The filter of claim 11, wherein the handle has a width less than or equal to an amount that the locking ring is raised from the adjacent outside surface of the bottom plate, and wherein the locking ring has an outer perimeter complementary to the shape of the handle. ### Claim 13 (depends on 1) The filter of claim 1, wherein the top has an outer edge and a width between the outer edge and the open center; wherein the bottom plate has a raised ring extending inward from the outermost edge a distance equal to the width of the top; and wherein the filter material is secured between the top and the raised ring of the bottom plate. ### Claim 14 (depends on 13) The filter of claim 13, wherein the bottom plate further comprises a depressed ring adjacent to the raised ring and extending inward from the raised ring; wherein a locking ring is adjacent to the depressed ring, is raised relative to the depressed ring, and extends inward from the depressed ring; and wherein the catch extends toward the top from the locking ring. ### Claim 15 An adaptor for a filter cage comprising: an annular surface having an outer circumference and an inner circumference; snaps distributed around the outer circumference of the annular surface; and a radial retention ring extending from the inner circumference of the annular surface. ### Claim 16 (depends on 15) The adaptor of claim 15, wherein the radial retention ring has a mating end inclined in a first direction relative to the annular surface. ### Claim 17 (depends on 16) The adaptor of claim 16, wherein the radial retention ring has a sliding surface the meets the mating end at an angle. ### Claim 18 (depends on 15) The adaptor of claim 15, wherein the radial retention ring extends continuously around the entire inner circumference of the annular surface.