Patent US4784171A successfully refreshed from Google Patents.
US4784171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool sweep modifications
Assignee: Individual
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Filing: 1987-10-16
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Granted: 1988-11-15
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Expires: 2007-10-16
Abstract
Abstract A pool sweep modification is provided for adapting an existing pool sweep to operate substantially below the surface of the water of a pool including a flotation device for positioning at one end of the water line of the sweep and a weight for attachment to the pool sweep head positioned at the end of the water line opposite the flotation device, the weight and the flotation device being balanced to maintain the pool sweep head substantially level during operation.
Inventors
- 👤 Sanford F. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:52
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A pool sweep modification for use in adapting a pool sweep of the type having a pool sweep head with a top and a bottom and a substantially rigid water line attached thereto for use under a swimming pool cover, comprising: a flotation device having: a body; axle means attached to said body; buoyant wheel means rotatably attached to said axle means which rotate when oriented to contact said pool cover, and attaching means for attaching said body to said substantially rigid water line in proper orientation so that said axle means is oriented at a substantially right angle to said rigid water line when said body is attached to said substantially rigid water line, and a weight having attaching means whereby said weight is attached to said bottom of said pool sweep head, said flotation device and said weight being matched to maintain said pool sweep substantially level substantially below the water line of said swimming pool, thereby substantially eliminating interference between said pool sweep and said pool cover.
Claim 2
Dependent Claim
170 words
A pool sweep modification for use in adapting a pool sweep of the type having a pool sweep head with a top and a bottom and a substantially rigid water line attached thereto for use under a swimming pool cover, comprising: a flotation device having: a body; axle means attached to said body; buoyant wheel means rotatably attached to said axle means which rotate when oriented to contact said pool cover, and attaching means for attaching said body to said substantially rigid water line in proper orientation so that said axle means is oriented at a substantially right angle to said rigid water line when said body is attached to said substantially rigid water line, and a weight having attaching means whereby said weight is attached to said bottom of said pool sweep head, said flotation device and said weight being matched to maintain said pool sweep substantially level substantially below the water line of said swimming pool, thereby substantially eliminating interference between said pool sweep and said pool cover.
Claim 3
Dependent Claim
27 words
The invention of claim 1, wherein said body of said flotation device includes locking means for locking said body in proper orientation to said pool sweep head.
Claim 4
Dependent Claim
58 words
The invention of claim 1, wherein said attaching means for attaching said body to said substantially rigid water line consists substantially of a hole oriented at a substantially right angle to said axle means of substantially the shape and size of said substantially rigid water line extending through said body into which said substantially rigid water line extends.
Claim 5
Dependent Claim
22 words
The invention of claim 3, including locking means for locking said body in proper orientation with respect to said pool sweep head.
Claim 6
Dependent Claim
46 words
The invention of claim 1, including a smooth-headed screw attachable to said top of said pool sweep head whereby a rough surface of said top of said pool sweep head is smoothed, thereby minimizing the likelihood of interference between said pool sweep and said pool cover.
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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |