Patent US4555334A successfully refreshed from Google Patents.
US4555334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cleaning a purgible swimming pool strainer
Assignee: Performance Pool Products Ltd
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Filing: 1983-07-22
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Granted: 1985-11-26
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Expires: 2003-07-22
Abstract
Abstract An apparatus for circulating water in a swimming pool including a strainer that is connected to a swimming pool unfiltered intake with a pump connected to the strainer for pumping water from the strainer to a filter. The filter in turn is connected to the swimming pool filtered return for depositing the filtered water into the swimming pool. The invention includes a valve connected to the pump strainer and filter for temporarily altering a flow of water from the swimming pool unfiltered intake or the filtered return to the pump and back through the strainer in a manner to provide a flow of water across the surface of the strainer to remove debris contained upon the strainer surface. A method for cleaning the residue collected by a strainer in a swimming pool water circulation system is also included that includes altering the flow of water from a swimming pool unfiltered intake to a pump and through the strainer in a manner to remove particles collected on the surface of the strainer. The altered flow of water containing the particles from the strainer is then directed to waste.
Inventors
- 👤 Joseph D. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:16
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; B; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/62; B01D29/66; B01D29/668
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
An apparatus for circulating water in a swimming pool comprising: a strainer connected through a valve means to a swimming pool intake for retaining particles from a flow of water from the swimming pool intake; a pump connected through the valve means to the strainer for pumping water; a filter for removing sediment from water received from the pump through the valve means; a swimming pool return connected to the filter for depositing water from the filter into the swimming pool; and the valve means for interconnecting said strainer, said pump, said filter, said swimming pool intake and said swimming pool return and for providing a first direction of water flow from the swimming pool intake through the strainer to the pump and to the filter and alternately providing a second direction of water flow from the swimming pool intake to the pump to the strainer to provide water flow substantially only across a single side of the strainer to remove particles retained thereon and to a waste receptacle wherein said water flow with removed particles are deposited.
Claim 2
Independent Claim
178 words
An apparatus for circulating water in a swimming pool comprising: a strainer connected through a valve means to a swimming pool intake for retaining particles from a flow of water from the swimming pool intake; a pump connected through the valve means to the strainer for pumping water; a filter for removing sediment from water received from the pump through the valve means; a swimming pool return connected to the filter for depositing water from the filter into the swimming pool; and the valve means for interconnecting said strainer, said pump, said filter, said swimming pool intake and said swimming pool return and for providing a first direction of water flow from the swimming pool intake through the strainer to the pump and to the filter and alternately providing a second direction of water flow from the swimming pool intake to the pump to the strainer to provide water flow substantially only across a single side of the strainer to remove particles retained thereon and to a waste receptacle wherein said water flow with removed particles are deposited.
Claim 3
Dependent Claim
49 words
An apparatus for circulating water in a swimming pool according to claim 1 wherein said valve means includes a first valve that permits a flow of water from the swimming pool intake to the strainer but prohibits a flow of water from the strainer to the swimming pool intake.
Claim 4
Dependent Claim
69 words
An apparatus for circulating water in a swimming pool according to claim 2 wherein said valve means includes a second valve connected to said filter, a discharge line of the pump and the strainer, said second valve in a first configuration providing a flow of water from the pump discharge to the filter in a second configuration providing a flow of water from the pump discharge to the strainer.
Claim 5
Dependent Claim
66 words
An apparatus for circulating water in a swimming pool according to claim 3 wherein said valve means includes a third valve that is connected to the swimming pool intake, a pump intake and a strainer output, said third valve including a first configuration for connecting the strainer output to the pump intake and a second configuration that connects the pump intake to the swimming pool intake.
Claim 6
Dependent Claim
62 words
An apparatus for circulating water in a swimming pool according to claim 1 wherein said valve means includes a fourth valve including a first configuration to prohibit a flow of water through the fourth valve and a second configuration to permit a flow of water to a waste receptacle, said flow of water containing debris removed from the surface of the strainer.
Claim 7
Dependent Claim
29 words
An apparatus for circulating water in a swimming pool according to claim 5 wherein said second, third, and fourth valves are connected and actuated by a single valve shaft.
Claim 8
Dependent Claim
66 words
An apparatus for circulating water in a swimming pool according to claim 3 wherein said valve means includes a third valve that is connected to the swimming pool filtered return, a pump intake and the strainer, said third valve including a first configuration for connecting the strainer to the pump intake and a second configuration that connects the pump intake to the swimming pool filtered return.
Claim 9
Dependent Claim
69 words
An apparatus for circulating water in a swimming pool according to claim 7 wherein said valve means includes a fourth valve connected to the strainer, said fourth valve including a first configuration for prohibiting a flow of water through the fourth valve and a second configuration to permit a flow of water to a waste receptacle, said flow of water containing debris removed from the surface of the strainer.
Claim 10
Dependent Claim
29 words
An apparatus for circulating water in a swimming pool according to claim 8 wherein said second, third, and fourth valves are connected and actuated by a single valve shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |