US3765534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skimmer for swimming pools
Assignee: Cascade Industries Inc
•
Filing: 1970-11-05
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Granted: 1973-10-16
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Expires: 1990-11-05
Abstract
Abstract A swimming pool skimmer includes a pressure chamber connected to the pump return. Water is discharged from the pressure chamber, through a nozzle located immediately below the surface water intake of the skimmer, and induces a strong counter-current flow toward the skimmer, with an attendant multiplication of the skimmer''s zone of influence. A feeder of purifying chemicals may be combined with the skimmer. Water under pressure is supplied to the feeder whenever the pump, and hence the skimmer is in operation. As a consequence, the water level in the feeder is raised to cause immersion and dissolution of the chemicals, and their spill-over while in solution into the water passing through the skimmer. When the pump is not operating, the water level of the feeder drops below the chemicals receiver. The chemicals thus dissolve only when the pump and skimmer are operating. Desirably, pressure water for the feeder is supplied through a branch or auxiliary tube extending from the pressure chamber.
Inventors
- 👤 R West
- 👤 K Kantebet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; E04H4/1272; C; C02; C02F; C02F2103/00; C02F2103/42
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
177 words
A swimming pool skimmer for use in association with a pump having an inlet and an outlet constituting the suction and pressure ends, respectively, of the pump, mountable in proximity to the side wall of a swimming pool and including a. an inlet chamber having an intake orifice opening through said wall for inflow of surface water into the chamber; b. means to connect said chamber in communication with the pump inlet; c. a pressure chamber including a discharge nozzle opening through said side wall, at a location and at a discharge angle requiring, in response to the discharge of watEr under prssure from the nozzle, a flow of surface water induced hydrodynamically by said discharge, in a direction toward and into the intake orifice; and d. means connecting the pressure chamber in communication with the outlet of the pump, to effect said discharge of water from the nozzle under pressure; said nozzle being disposed below the intake orifice, in a form effective to direct a jet through the nozzle in a direction inclined downwardly outward therefrom.
Claim 2
Dependent Claim
177 words
A swimming pool skimmer for use in association with a pump having an inlet and an outlet constituting the suction and pressure ends, respectively, of the pump, mountable in proximity to the side wall of a swimming pool and including a. an inlet chamber having an intake orifice opening through said wall for inflow of surface water into the chamber; b. means to connect said chamber in communication with the pump inlet; c. a pressure chamber including a discharge nozzle opening through said side wall, at a location and at a discharge angle requiring, in response to the discharge of watEr under prssure from the nozzle, a flow of surface water induced hydrodynamically by said discharge, in a direction toward and into the intake orifice; and d. means connecting the pressure chamber in communication with the outlet of the pump, to effect said discharge of water from the nozzle under pressure; said nozzle being disposed below the intake orifice, in a form effective to direct a jet through the nozzle in a direction inclined downwardly outward therefrom.
Claim 3
Dependent Claim
68 words
A swimming pool skimmer as in claim 1 wherein the nozzle is in the form of a long, horizontally extending, narrow slot having top and bottom edges inclined downwardly in the direction of flow through the nozzle, whereby water will be directed through the nozzle in the form of a wide, flat jet along a path inclined from the horizontal correspondingly to the inclination of the nozzle edges.
Claim 4
Dependent Claim
79 words
A skimmer as in claim 2 and comprising a housing including said inlet chamber and pressure chamber, a chemicals receiver in the housing and from which water and chemicals in solution may flow into the water entering the housing through the inlet chamber, and means connecting said receiver in communication with the pump outlet to force water thereinto to an extent sufficient to immerse said chemicals, with consequent dissolution thereof, whenever water is being forced into said pressure chamber.
Claim 5
Dependent Claim
21 words
A skimmer as in claim 1 wherein said intake orifice and nozzle are closely spaced, in vertical alignment with each other.
Claim 6
Dependent Claim
22 words
A skimmer as in claim 4 wherein both the intake orifice and the nozzle are in the form of horizontally elongated openings.
Claim 7
Dependent Claim
71 words
A skimmer as in claim 5 in which the nozzle opening is a narrow, horizontal slot having top and bottom edges inclined in a direction to direct a jet of water therethrough along a path inclined downwardly outwardly from the nozzle, said intake orifice being in the form of a large, generally rectangular opening coextensive horizontally with the slot but having a vertical dimension substantially greater than that of the slot.
Claim 8
Dependent Claim
106 words
A skimmer as in claim 1 comprising a housing, said housing including said inlet chamber and pressure chamber and further including a hollow body portion formed with front and rear walls, said body portion having an upwardly opening well, said housing further including a hollow extension projecting forwardly from the front wall of the body portion, said extension including a horizontal divider extending within the hollow interior thereof and separating the same into said inlet and pressure chambers, the inlet chamber opening into the well and the well being connected with the pump inlet to provide said connection of the inlet chamber to the pump inlet.
Claim 9
Dependent Claim
97 words
A skimmer as in claim 7 wherein the housing further includes a flat face plate for said extension, said extension having an open front end and the face plate extending across said front end of the extension, said face plate being interengaged with the front end of the extension and abutting against said side wall of the pool, said housing further including means cooperating with the face plate to clampably engage said side wall therebetween, said face plate having vertically spaced openings one defining said nozzle and the other defining said intake orifice of the inlet chamber.
Claim 10
Dependent Claim
139 words
A skimmer for swimming pools as in claim 1, further including a skimmer well into which said inlet chamber opens, a chemical feeder well including a wall over which water may spill into the skimmer well upon reaching a first level within the feeder well, a chemicals receiver in the feeder well arranged to immerse water-soluble chemicals in water within the feeder well whenever said water is at the first level, and an auxiliary pressure line communicating the feeder well with the pump outlet, whereby to force water under pressure simultaneously into the feeder well and pressure chamber to maintain water in the feeder well at said first level when the pump is in operation, said feeder well having a drain opening fOr lowering the water level when the pump is not operating whereby the chemicals are not immersed.
Claim 11
Dependent Claim
29 words
A skimmer as in claim 9 in which the drain opening is below a notch formed in the wall, said water spilling into the skimmer well through the notch.
Claim 12
Dependent Claim
20 words
A skimmer as in claim 9 wherein said auxiliary pressure line extends from the pressure chamber to the feeder well.
Claim 13
Dependent Claim
199 words
A combined skimmer-feeder for swimming pools for use in association with a pump having an inlet and an outlet, comprising a housing mountable in proximity to the side wall of a swimming pool and including a. an inlet chamber having an intake orifice for flow of surface water into said chamber; b. a main well into which water flows from the inlet chamber; c. means to connect said main well in communication with the pump inlet; d. a feeder well including means to cause spill-over therefrom into the main well whenever water is at a predetermined level in the feeder well, said feeder well constituting a receiver for water-soluble chemicals such that said chemicals will be immersed at least partially in the water within the feeder well whenever water is at said level therein; and e. means connecting said feeder well to the pump outlet to force water into the feeder well up to said level whenever the pump is operating to pump water from the main well, said feeder well having drain means effective to drain water from the feeder well to an extent such that the chemicals are not immersed whenever the pump is not in operation.
Claim 14
Dependent Claim
199 words
A combined skimmer-feeder for swimming pools for use in association with a pump having an inlet and an outlet, comprising a housing mountable in proximity to the side wall of a swimming pool and including a. an inlet chamber having an intake orifice for flow of surface water into said chamber; b. a main well into which water flows from the inlet chamber; c. means to connect said main well in communication with the pump inlet; d. a feeder well including means to cause spill-over therefrom into the main well whenever water is at a predetermined level in the feeder well, said feeder well constituting a receiver for water-soluble chemicals such that said chemicals will be immersed at least partially in the water within the feeder well whenever water is at said level therein; and e. means connecting said feeder well to the pump outlet to force water into the feeder well up to said level whenever the pump is operating to pump water from the main well, said feeder well having drain means effective to drain water from the feeder well to an extent such that the chemicals are not immersed whenever the pump is not in operation.
Claim 15
Dependent Claim
15 words
A skimmer-feeder as in claim 12 further including a strainer basket in the main well.
Claim 16
Dependent Claim
32 words
A skimmer-feeder as in claim 12 wherein said spill-over means is a dividing wall between the wells having a spillway through which water flows from the feeder well into the main well.
Claim 17
Dependent Claim
194 words
A swimming pool skimmer for use in association with a swimming pool having a wall, and with a pump having an inlet and an outlet respectively constituting the suction and pressure ends thereof, comprising: a. a housing mountable in proximity to said wall and having an intake orifice opening through said wall for inflow of surface water into the housing; b. strainer means mounted in said housing in position to require passage of the influent water therethrough, said housing having an outlet downstream from the strainer means adapted to be connected to the pump suction for inducing water flow through the housing; c. a conduit having inlet and outlet ends, the inlet end of the conduit being connected to said outlet of the pump; and d. a nozzle spaced downwardly from the intake orifice, said nozzle having a connection to the outlet end of the conduit and being constructed and arranged to discharge water under pressure downwardly and outwardly into the pool at a location and at a discharge angle whereby to produce a counterflow of surface water toward the intake orifice in response to the discharge of water under pressure through the nozzle.
Claim 18
Dependent Claim
194 words
A swimming pool skimmer for use in association with a swimming pool having a wall, and with a pump having an inlet and an outlet respectively constituting the suction and pressure ends thereof, comprising: a. a housing mountable in proximity to said wall and having an intake orifice opening through said wall for inflow of surface water into the housing; b. strainer means mounted in said housing in position to require passage of the influent water therethrough, said housing having an outlet downstream from the strainer means adapted to be connected to the pump suction for inducing water flow through the housing; c. a conduit having inlet and outlet ends, the inlet end of the conduit being connected to said outlet of the pump; and d. a nozzle spaced downwardly from the intake orifice, said nozzle having a connection to the outlet end of the conduit and being constructed and arranged to discharge water under pressure downwardly and outwardly into the pool at a location and at a discharge angle whereby to produce a counterflow of surface water toward the intake orifice in response to the discharge of water under pressure through the 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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |