US4717477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swingable filter
Assignee: Kioritz Corp
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Filing: 1986-07-21
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Granted: 1988-01-05
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Expires: 2006-07-21
Abstract
Abstract A swingable filter including an upper lid for discharging a liquid therethrough which is connected to a flexible pipe of a liquid suction device, a weight, a plurality of ribs defining a space for housing and supporting the weight for rotating movement, a first filter element located on the outer periphery of the ribs and a second filter element interposed between the upper lid and the weight. The weight cleans the filter elements by its rotation. To secure the elements together, a detachable rubber band may be provided.
Inventors
- 👤 Akira Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:23
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A swingable filter comprising: an upper lid for discharging a liquid therethrough, said upper lid being connected to a flexible suction pipe of a liquid suction device; a rotatable weight; a plurality of ribs defining a space for housing and supporting said weight therein for rotation of said weight upon said ribs; a first filter element located on an outer periphery of the ribs; and a second filter element interposed between the upper lid and the weight, said weight simultaneously contacting said ribs and a lower surface of said second filter element for simultaneous rotation thereon, whereby said simultaneous rotation of said weight simultaneously cleans said first and second filter elements.
Claim 2
Dependent Claim
111 words
A swingable filter comprising: an upper lid for discharging a liquid therethrough, said upper lid being connected to a flexible suction pipe of a liquid suction device; a rotatable weight; a plurality of ribs defining a space for housing and supporting said weight therein for rotation of said weight upon said ribs; a first filter element located on an outer periphery of the ribs; and a second filter element interposed between the upper lid and the weight, said weight simultaneously contacting said ribs and a lower surface of said second filter element for simultaneous rotation thereon, whereby said simultaneous rotation of said weight simultaneously cleans said first and second filter elements.
Claim 3
Dependent Claim
29 words
A swingable filter as claimed in claim 1, further comprising a rubber band for securing said upper lid, second filter element and ribs together to provide a unitary structure.
Claim 4
Dependent Claim
90 words
A swingable filter as claimed in claim 1, wherein said upper lid for discharging a liquid therethrough includes a connection formed at its upper portion for connecting the upper lid to the flexible suction pipe and a disc-shaped portion formed inside its lower portion to define a space, wherein said second filter element is disc-shaped and located beneath the upper lid, wherein said weight is spherical in shape and located beneath the second filter element, and wherein the space defined by said ribs is greater in size than the weight.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |