Patent EP0468192A2 successfully refreshed from Google Patents.
Patent US3844950A successfully refreshed from Google Patents.
US3844950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary skimmer
Assignee: Sunoco Inc
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Filing: 1973-02-20
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Granted: 1974-10-29
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Expires: 1993-02-20
Abstract
Abstract An elongated skimming blade is mounted for rotation, about a substantially vertical axis, across the surface of a liquid, and is rotated about this axis by means of a suitable propulsion device. A collection trough attached to the blade serves as an accumulation means for the skimmed material. A float whose buoyancy is adjustable maintains the blade in a predetermined position relative to the liquid surface, the float being anchored to the bed of the body of water being skimmed. The whole constitutes a portable rotary skimmer.
Inventors
- 👤 G Aulisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:13
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2433; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D21/02; B01D21/04; B01D21/06; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A device for removing floatable material from the surface of a body of water comprising means establishing a substantially vertical axis, an elongated skimming blade penetrating the surface of the water and supported for rotation about said axis in a predetermined direction, an accumulation means secured to the trailing edge of said blade and rotating therewith, buoyant means supporting the blade and accumulation means and also said axis in the water with the blade at a predetermined depth below the water surface, means for anchoring said buoyant means at a fixed location in said body of water, means for rotating the blade about said axis, and means for withdrawing material from said accumulation means.
Claim 2
Independent Claim
114 words
A device for removing floatable material from the surface of a body of water comprising means establishing a substantially vertical axis, an elongated skimming blade penetrating the surface of the water and supported for rotation about said axis in a predetermined direction, an accumulation means secured to the trailing edge of said blade and rotating therewith, buoyant means supporting the blade and accumulation means and also said axis in the water with the blade at a predetermined depth below the water surface, means for anchoring said buoyant means at a fixed location in said body of water, means for rotating the blade about said axis, and means for withdrawing material from said accumulation means.
Claim 3
Independent Claim
131 words
A device for removing floatable material from the surface of a liquid comprising means establishing a substantially vertical axis, a pair of elongated skimming blades each extending substantially radially outwardly from said axis and in substantially diametrically opposite directions, each skimming blade penetrating the surface of the liquid and being supported for movement across the surface thereof in a predeterMined direction; an accumulation means secured to the trailing edge of each blade and moving therewith, buoyant means supporting the blades and accumulation means in said liquid with the blades at a predetermined depth below the liquid surface, means for anchoring said buoyant means at a fixed location in said liquid, means for rotating the blades bodily as a unit about said axis, and means for withdrawing material from said accumulation means.
Claim 4
Independent Claim
131 words
A device for removing floatable material from the surface of a liquid comprising means establishing a substantially vertical axis, a pair of elongated skimming blades each extending substantially radially outwardly from said axis and in substantially diametrically opposite directions, each skimming blade penetrating the surface of the liquid and being supported for movement across the surface thereof in a predeterMined direction; an accumulation means secured to the trailing edge of each blade and moving therewith, buoyant means supporting the blades and accumulation means in said liquid with the blades at a predetermined depth below the liquid surface, means for anchoring said buoyant means at a fixed location in said liquid, means for rotating the blades bodily as a unit about said axis, and means for withdrawing material from said accumulation means.
Claim 5
Dependent Claim
47 words
Device according to claim 2, wherein the blade rotating means comprises separate jet propulsion devices secured respectively to the outer end of each rotating assembly of skimming blade and accumulation means, and means for supplying gas under pressure to said propulsion devices to provide jet motive forces.
References Cited (Backward Citations)
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |