Patent US3839749A successfully refreshed from Google Patents.
US3839749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool leaf trap
Assignee: Individual
•
Filing: 1972-10-13
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Granted: 1974-10-08
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Expires: 1992-10-13
Abstract
Abstract A leaf trap adapted to fit over a drain in the floor of a swimming pool includes a basket shaped to cover the drain. The bottom of the basket has openings through it to strain out leaves and permit water to flow through the basket and into the pool drain. A movable cover is disposed over the basket, and provided with means responsive to the position of the trap with respect to the pool floor for moving the cover to open and close the trap.
Inventors
- 👤 C Blumenfeld
- 👤 A Winterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:02
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; E04H4/1236; B; B01; B01D; B01D35/00; B01D35/02; B01D35/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A movable leaf trap constructed and arranged to rest on the floor around a drain in the floor of a swimming pool, the trap comprising a basket shaped to rest on the pool floor over the drain, suspension means secured to the basket for raising and lowering the trap, the basket including a bottom with openings through it to permit water to flow into the basket and out the bottom into the pool drain, a movable cover disposed over the basket, a member secured to the basket to move downwardly relative to the basket and project below the basket when the basket is moved out of contact with the pool floor and to contact the pool floor so the basket moves downwardly relative to the member as the basket is lowered to rest on the pool floor, and means connecting the member to the cover to move the cover away from the basket to open the trap when the basket is moved into contact with the pool floor and to move the cover toward the basket and close the trap when the basket is moved away from the pool floor.
Claim 2
Dependent Claim
190 words
A movable leaf trap constructed and arranged to rest on the floor around a drain in the floor of a swimming pool, the trap comprising a basket shaped to rest on the pool floor over the drain, suspension means secured to the basket for raising and lowering the trap, the basket including a bottom with openings through it to permit water to flow into the basket and out the bottom into the pool drain, a movable cover disposed over the basket, a member secured to the basket to move downwardly relative to the basket and project below the basket when the basket is moved out of contact with the pool floor and to contact the pool floor so the basket moves downwardly relative to the member as the basket is lowered to rest on the pool floor, and means connecting the member to the cover to move the cover away from the basket to open the trap when the basket is moved into contact with the pool floor and to move the cover toward the basket and close the trap when the basket is moved away from the pool floor.
Claim 3
Dependent Claim
43 words
A trap according to claim 1 in which the basket includes an upright wall which has apertures through it, and a means for supporting the basket bottom above the pool floor to let water flow through the basket wall and into the drain.
Claim 4
Dependent Claim
18 words
A trap according to claim 1 in which the removable cover includes at least one downwardly extending baffle.
Claim 5
Dependent Claim
20 words
A trap according to claim 3 in which the baffle is movable up and down with respect to the cover.
Claim 6
Dependent Claim
24 words
A trap according to claim 4 in which the cover includes a slot, and a movable baffle is mounted to slide in the slot.
Claim 7
Dependent Claim
20 words
A trap according to claim 5 which includes stop means for preventing the baffle from sliding out of the slot.
Claim 8
Dependent Claim
27 words
A trap according to claim 1 which includes an annular flexible apron disposed around the basket to extend downwardly and outwardly to fit against the pool floor.
Claim 9
Dependent Claim
24 words
A trap according to claim 7 which includes at least one upwardly and radially extending baffle mounted on the top surface of the apron.
Claim 10
Dependent Claim
17 words
A trap according to claim 1 which includes means for removably securing the cover to the basket.
Claim 11
Dependent Claim
49 words
A trap according to claim 1 which includes an upwardly extending sleeve secured to the basket bottom, and a downwardly extending rod secured to the cover and disposed in the sleeve to slide longitudinally and project below the basket bottom when the basket cover is in the closed position.
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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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |