Patent US4826591A successfully refreshed from Google Patents.
US4826591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool skimmer
Assignee: Caretaker Systems Inc
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Filing: 1987-10-02
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Granted: 1989-05-02
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Expires: 2007-10-02
Abstract
Abstract A skimmer is provided for a swimming pool and is constructed in a manner similar to conventional skimmers for a pool so far as the water inlet and filter basket is concerned. Instead of pulling water through the filter basket to the recirculating pump for the pool, however, a water outlet is provided from the bottom of the basket holding cavity of the skimmer; and return water for supply back to the pool is provided by the recirculating pump to an entrainment nozzle device located at the bottom of the filter cavity to pull additional water through the filter cavity to mix with the return water, all of which is supplied to the water outlet located beneath the pool water surface level. Consequently, even if the filter basket should be completely clogged, the water flow through the recirculating system for the pool is not impeded, since the filter basket is not in the primary recirculating path of the pool system.
Inventors
- 👤 Narciso F. Macia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:56
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; E04H4/1272; B; B01; B01D; B01D2201/00; B01D2201/20; B01D2201/204; B01D2201/208
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
309 words
A skimmer for a swimming pool having a water recirculation system in it for withdrawing water from a below-water drain and supplying it to a return line after filtering, said skimmer including in combination: water inlet means opening into the water in a pool for location partially below and partially above the normal surface water level of the pool, so that objects floating on the surface of the water in the pool may enter into said water inlet means; water outlet means opening into the water in the pool a predetermined distance below the opening of said inlet means; a skimmer basket cavity substantially vertically oriented between said water inlet means and said water outlet means, with said water inlet means being located near the top of said skimmer basket cavity and said water outlet means located at a point below said water inlet means to return water therefrom to the pool beneath the surface water level thereof after passage of such water through said skimmer basket cavity; a skimmer basket in said skimmer basket cavity; water return means for supplying recirculated water from the return line of the pool water recirculation system to the pool; entrainment nozzle means located in the bottom of the skimmer basket cavity below said skimmer basket and coupling said water return means with said water outlet means for drawing surface water from said inlet means through said skimmer basket cavity to mix such surface water with said water from said water return means and to supply such water mixture to the pool through said water outlet means, the sole water flow path through said skimmer basket cavity being from said water inlet means through said entrainment nozzle means to said water outlet means, such that no water flow through said skimmer basket cavity takes place through the water recirculation system of the pool.
Claim 2
Dependent Claim
309 words
A skimmer for a swimming pool having a water recirculation system in it for withdrawing water from a below-water drain and supplying it to a return line after filtering, said skimmer including in combination: water inlet means opening into the water in a pool for location partially below and partially above the normal surface water level of the pool, so that objects floating on the surface of the water in the pool may enter into said water inlet means; water outlet means opening into the water in the pool a predetermined distance below the opening of said inlet means; a skimmer basket cavity substantially vertically oriented between said water inlet means and said water outlet means, with said water inlet means being located near the top of said skimmer basket cavity and said water outlet means located at a point below said water inlet means to return water therefrom to the pool beneath the surface water level thereof after passage of such water through said skimmer basket cavity; a skimmer basket in said skimmer basket cavity; water return means for supplying recirculated water from the return line of the pool water recirculation system to the pool; entrainment nozzle means located in the bottom of the skimmer basket cavity below said skimmer basket and coupling said water return means with said water outlet means for drawing surface water from said inlet means through said skimmer basket cavity to mix such surface water with said water from said water return means and to supply such water mixture to the pool through said water outlet means, the sole water flow path through said skimmer basket cavity being from said water inlet means through said entrainment nozzle means to said water outlet means, such that no water flow through said skimmer basket cavity takes place through the water recirculation system of the pool.
Claim 3
Dependent Claim
46 words
The combination according to claim 1 wherein said skimmer basket is removable, with the upper portion of said skimmer basket receiving the surface water of said pool and the lower portion thereof located above said entrainment nozzle, said water return means and said water outlet means.
Claim 4
Dependent Claim
94 words
The combination according to claim 2 wherein said skimmer basket cavity is open from the top, adjacent the edge of a swimming pool, with said skimmer basket cavity being substantially parallel to a vertical wall surface of said pool wherein said water inlet means is a substantially horizontal passageway between the wall of said pool and the upper portion of said skimmer basket cavity and wherein said water outlet means is located adjacent the bottom of said cavity below the water surface of said pool and is substantially parallel to said water inlet means.
Claim 5
Dependent Claim
76 words
The combination according to claim 3 wherein said entrainment nozzle has a passageway therethrough connected at one end with said water outlet means; and wherein said water return means terminates at the other end of the passageway through said entrainment nozzle to eject water therefrom into said entrainment nozzle, the other end of said passageway through said entrainment nozzle having a diameter greater than the diameter of the water stream exiting from said water return means.
Claim 6
Dependent Claim
14 words
The combination according to claim 4 further including means for adjusting said entrainment nozzle.
Claim 7
Dependent Claim
94 words
The combination according to claim 1 wherein said skimmer basket cavity is open from the top, adjacent the edge of a swimming pool, with said skimmer basket cavity being substantially parallel to a vertical wall surface of said pool wherein said water inlet means is a substantially horizontal passageway between the wall of said pool and the upper portion of said skimmer basket cavity and wherein said water outlet means is located adjacent the bottom of said cavity below the water surface of said pool and is substantially parallel to said water inlet means.
Claim 8
Dependent Claim
76 words
The combination according to claim 1 wherein said entrainment nozzle has a passageway therethrough connected at one end with said water outlet means; and wherein said water return means terminates at the other end of the passageway through said entrainment nozzle to eject water therefrom into said entrainment nozzle, the other end of said passageway through said entrainment nozzle having a diameter greater than the diameter of the water stream exiting from said water return means.
Claim 9
Dependent Claim
14 words
The combination according to claim 7 further including means for adjusting said entrainment nozzle.
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |