Patent US4802592A successfully refreshed from Google Patents.
US4802592A
Expired / Lapsed
US
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Floating liquid skimmers having a floating weir
Assignee: FAHET SA A Corp OF REPUBLIC OF SWITZERLAND
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Filing: 1988-02-16
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Granted: 1989-02-07
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Expires: 2008-02-16
Abstract
Abstract The floating skimmer has a body fitted with a floating weir and with a suction outlet in its base for connection to a suction hose. A float is provided to keep the body afloat. The float is hinged to a wall of the body. A scuttle valve is provided in a wall of the body and is connected to the float. If the body should rise in the water, the float drops and opens the scuttle valve to admit water to the body and scuttle it so that it sinks to its former level.
Inventors
- 👤 Allistair P. Wessels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:07
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1654; B; B01; B01D; B01D21/00; B01D21/24; B01D21/2433; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339; Y10T137/7342; Y10T137/7358; Y10T137/7404; Y10T137/8593; Y10T137/86236; Y10T137/86252
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
A floating skimmer which comprises a body, a floating weir at an edge of the body over which liquid can pass into the body, a suction outlet in the base of the body for connection to a suction hose, at least one float for keeping the body buoyant and which is hinged to the body, a scuttle valve in a wall of the body, and motion transmitting means between the float and the scuttle valve so that as the float pivots downwardly when the body rises in liquid, the scuttle valve is opened to allow liquid to enter the body and cause it to float at its original level.
Claim 2
Dependent Claim
109 words
A floating skimmer which comprises a body, a floating weir at an edge of the body over which liquid can pass into the body, a suction outlet in the base of the body for connection to a suction hose, at least one float for keeping the body buoyant and which is hinged to the body, a scuttle valve in a wall of the body, and motion transmitting means between the float and the scuttle valve so that as the float pivots downwardly when the body rises in liquid, the scuttle valve is opened to allow liquid to enter the body and cause it to float at its original level.
Claim 3
Dependent Claim
50 words
A floating skimmer according to claim 1 in which the scuttle valve comprises an opening in the wall of the body and a mushroom valve member having a valve stem which projects outwardly from the body and which is in the form of a bent rod connected to the float.
Claim 4
Dependent Claim
46 words
A floating skimmer according to claim 2 in which the body is in the form of an open-topped, rectangular box which has floats hinged to it on opposite sides thereof and which has a scuttle valve in each of those sides connected to the relevant float.
Claim 5
Dependent Claim
29 words
A floating skimmer according to claim 3 in which there are floating weirs on each of those sides of the box which do not have floats hinged to them.
Claim 6
Dependent Claim
38 words
A floating skimmer according to claim 4 in which the suction outlet of the body is controlled by a valve which permits a predetermined leak of liquid to take place to of the body into the suction hose.
Claim 7
Dependent Claim
45 words
A floating skimmer according to claim 4 in which the suction outlet of the body is controlled by a changeover valve operable selectively to connect the interior of the body to the suction hose or to connect the suction hose to an automatic pool cleaner.
References Cited (Backward Citations)
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US2597728A
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |