Patent US3732877A successfully refreshed from Google Patents.
US3732877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for cleaning objects
Assignee: Individual
•
Filing: 1971-03-29
•
Granted: 1973-05-15
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Expires: 1991-03-29
Abstract
Abstract A washing apparatus has a collecting space for a washing liquid. A duct extends through the wall of the collecting space intermediate the level of the liquid therein and the bottom of the space, the duct being connected to an external filter assembly. Washing liquid is circulated from the filter assembly back to the apparatus. The top of the filter assembly has an aperture to permit access to a filter therein.
Inventors
- 👤 H Kloeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:15
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4202; A47L15/4204
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
In a cleaning apparatus of the type having a washing space with support means therein for holding objects to be washed, a collecting space for collecting washing liquid from said washing space, said collecting space having a surrounding wall, a pump, filter means, and conduit means for connecting said pump to said collecting space by way of said filter means and for returning washing liquid from said collecting space to said washing space, and wherein during use said collecting space is normally filled to a predetermined level with said washing liquid; the improvement wherein said filter means is positioned externally of the wall of said collecting space, and said conduit means comprises an aperture in the wall of said collecting space through which said washing liquid may flow to said filter means, said aperture being positioned above the bottom of said collecting space and below said predetermined level for inhibiting the flow of unsuspended and nonfloating material from said collecting space to said filter means.
Claim 2
Dependent Claim
165 words
In a cleaning apparatus of the type having a washing space with support means therein for holding objects to be washed, a collecting space for collecting washing liquid from said washing space, said collecting space having a surrounding wall, a pump, filter means, and conduit means for connecting said pump to said collecting space by way of said filter means and for returning washing liquid from said collecting space to said washing space, and wherein during use said collecting space is normally filled to a predetermined level with said washing liquid; the improvement wherein said filter means is positioned externally of the wall of said collecting space, and said conduit means comprises an aperture in the wall of said collecting space through which said washing liquid may flow to said filter means, said aperture being positioned above the bottom of said collecting space and below said predetermined level for inhibiting the flow of unsuspended and nonfloating material from said collecting space to said filter means.
Claim 3
Dependent Claim
55 words
The apparatus of claim 1 wherein said filter means comprises a filter housing and a filter element in said housing and positioned at a level above said aperture, and said conduit means further comprises duct means extending between said pump and said filter housing at a point in said filter housing above said filter element.
Claim 4
Dependent Claim
59 words
The apparatus of claim 1 wherein said filter means comprises a filter housing and a tubular filter element within said housing, said conduit means comprising means directing the flow of fluid from said aperture into said housing externally of said filter element, and means directing the flow of washing liquid to said pump from internally of said filter element.
Claim 5
Dependent Claim
49 words
The apparatus of claim 1 wherein said filter means comprises a filter housing, a filter element positioned within said housing for filtering said washing liquid, and a handle on said filter element, said handle projecting upwardly to a position above the level of said washing liquid within said housing.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 further comprising a magnetic filter positioned in said conduit means between said filter means and said pump.
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |