US4276070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable dust collecting container for professional and household vacuum cleaners
Assignee: Rommag P Worwag and Co
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Filing: 1979-12-26
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Granted: 1981-06-30
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Expires: 1999-12-26
Abstract
Abstract A removable dust collecting container for professional and household vacuum cleaners. The container is closed with a dust filter embodied as a cover, whereby between the dust collecting container and the cover-like filter, a soft-elastic seal is arranged. The filter is embodied in a frame configuration, and projects in a positively connecting manner into the opening of the dust collecting container. The seal is arranged tangentially between the inner surface of the dust collecting container and the outer surface of the filter which projects or extends into the dust collecting container. The filter may be embodied as a double filter, including a coarse filter on the inlet side and an immediately subsequent filter embodied as a fine filter.
Inventors
- 👤 Niklaus Hug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:29
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1409
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A removable dust collecting container for professional, industrial, and household vacuum cleaner, said container having an open top portion when set upright, and an inlet for dusty gas, said container comprising in combination: a frame-like dust filter serving as a cover for closing off said open portion of said dust collecting container by being arranged in said container in a positive connection; said top portion of said dust collecting container being conically widened to receive said filter, said filter including a frame being provided with a narrow peripheral edge that extends horizontally, and said dust collecting container being provided with an upper boundary surface that extends horizontally and upon which said narrow edge of said filter frame engages; and a soft-elastic seal rectangular in cross section and sealingly arranged in engagement between the inner surface of said dust collecting container and the outer surface of said filter frame, when the latter is arranged in said container, for effecting said positive connection.
Claim 2
Dependent Claim
161 words
A removable dust collecting container for professional, industrial, and household vacuum cleaner, said container having an open top portion when set upright, and an inlet for dusty gas, said container comprising in combination: a frame-like dust filter serving as a cover for closing off said open portion of said dust collecting container by being arranged in said container in a positive connection; said top portion of said dust collecting container being conically widened to receive said filter, said filter including a frame being provided with a narrow peripheral edge that extends horizontally, and said dust collecting container being provided with an upper boundary surface that extends horizontally and upon which said narrow edge of said filter frame engages; and a soft-elastic seal rectangular in cross section and sealingly arranged in engagement between the inner surface of said dust collecting container and the outer surface of said filter frame, when the latter is arranged in said container, for effecting said positive connection.
Claim 3
Dependent Claim
34 words
A container in combination according to claim 1, in which the peripheral surface of said filter frame extends a slight distance from and substantially parallel to the inner surface of said dust collecting container.
Claim 4
Dependent Claim
24 words
A container in combination according to claim 1, in which said filter frame is provided with a groove for receiving said seal positively therein.
Claim 5
Dependent Claim
33 words
A container in combination according to claim 1, in which said filter includes a double filter, including a coarse filter on the inlet side of said filter, and an immediately following fine filter.
Claim 6
Dependent Claim
22 words
A container in combination according to claim 4, in which said coarse filter has a structure adapted to enlarge the filter surface.
Claim 7
Dependent Claim
18 words
A container in combination according to claim 5, in which said coarse filter is a folded flat filter.
Claim 8
Dependent Claim
21 words
A container in combination according to claim 4, in which said fine filter at least partially fills out said filter frame.
Claim 9
Dependent Claim
23 words
A container in combination according to claim 7, in which said fine filter is an at least single layer combination of differing materials.
Claim 10
Dependent Claim
32 words
A container in combination according to claim 8, in which said fine filter comprises at least one of the group consisting of paper, fleece, textile material, open-pore foam material, and sintered material.
References Cited (Backward Citations)
US2386532A
Cited
US2713946A
Cited
US3365864A
Cited
US3856488A
Cited
GB1436403A
Cited
US4132641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |