US4637087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool cleaner attachment
Assignee: Individual
•
Filing: 1985-08-30
•
Granted: 1987-01-20
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Expires: 2005-08-30
Abstract
Abstract A water foil is attached to a swimming pool brush or vacuum cleaning head. The foil has a check valve structure (one-way valve) incorporated therein so that the foil urges a cleaning device against a swimming pool surface when pushed down through the water while presenting a minimum surface area during an upward stroke, thereby increasing the efficiency of a pool cleaning operation.
Inventors
- 👤 Andrew S. Feinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1609
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
An attachment for increasing the cleaning efficiency of a pool cleaning device which has a pole for moving the device, the attachment comprising: a foil connected to the pole for urging the device against a pool wall when the pole is pushed down through the water in the pool; and one-way valve means mounted to the foil for allowing flow through the foil when the pole is withdrawn from the water, thus minimizing water forces on the foil necessary for pole withdrawal.
Claim 2
Dependent Claim
82 words
An attachment for increasing the cleaning efficiency of a pool cleaning device which has a pole for moving the device, the attachment comprising: a foil connected to the pole for urging the device against a pool wall when the pole is pushed down through the water in the pool; and one-way valve means mounted to the foil for allowing flow through the foil when the pole is withdrawn from the water, thus minimizing water forces on the foil necessary for pole withdrawal.
Claim 3
Dependent Claim
47 words
The structure set forth in claim 1, wherein the valve means comprises at least one opening in the foil; and a corresponding flexible flap mounted to the foil for covering the opening when the pole is pushed down and uncovering the opening when the pole is withdrawn.
Claim 4
Dependent Claim
42 words
The structure set forth in claim 1, wherein the valve means comprises openings formed in the foil, in a plurality of rows; and a plurality of flaps mounted to the foil, each flap opening and closing the openings of a respective row.
Claim 5
Dependent Claim
47 words
The structure set forth in claim 1 wherein the valve means comprises at least two rows of openings; and a single flap centrally secured to the foil, between the rows, the flap having first and second sections for opening and covering the openings of a corresponding row.
Claim 6
Dependent Claim
25 words
The structure set forth in claim 3 wherein the pool cleaning device includes a brush member connected to the pole in proximity to the foil.
Claim 7
Dependent Claim
25 words
The structure set forth in claim 4, wherein the pool cleaning device includes a brush member connected to the pole in proximity to the foil.
Claim 8
Dependent Claim
26 words
The structure set forth in claim 3, wherein the pool cleaning device includes a vacuum cleaner head connected to the pole in proximity to the foil.
Claim 9
Dependent Claim
26 words
The structure set forth in claim 4, wherein the pool cleaning device includes a vacuum cleaner head connected to the pole in proximity to the foil.
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) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |