Patent US3797320A successfully refreshed from Google Patents.
Patent US4154678A successfully refreshed from Google Patents.
US4154678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skimmer device
Assignee: Individual
•
Filing: 1976-12-13
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Granted: 1979-05-15
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Expires: 1996-12-13
Abstract
Abstract Apparatus for removing floatable material from the surface of a carrier fluid including a hollow receptacle having a continuous side wall and a bottom having an opening centrally located therein. A pump is mounted within the hollow receptacle such that the pump inlet is positioned over the receptacle bottom opening and the pump outlet is connected to an exhaust conduit line mounted in the side wall and extending outwardly therefrom to a container or sump. The receptacle is positioned such that the top rim of the side receptacle wall rides at the surface of the carrier fluid so that floatable material, solid or liquid, is transferred over the rim into the receptacle and for solid materials, an opening is provided in the receptacle bottom for flowing upwardly into the receptacle to combine with the skimmed solid floatable substance for pumping outwardly of the receptacle through the exhaust conduit line.
Inventors
- 👤 Lawrence T. Kole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:39
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2433; B01D21/30; B01D21/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
A skimmer apparatus for collecting solid material floating in a liquid, comprising: a hollow receptacle with open upper edges providing inlet means thereinto; a pump located within said receptacle just above the bottom thereof, said pump constructed and arranged with inlet opening thereinto located in the lower side thereof; an opening in the bottom of said receptacle opposite said pump inlet opening, said receptacle bottom opening being of smaller diameter than said pump inlet opening; and conduit means connected to said pump for the discharge of material collected by said pump, whereby material flowing over said receptacle upper edge is mixed with liquid introduced through said receptacle bottom opening by pump suction and head pressure to permit mixing of said solid material and liquid for discharge of said material by said pump.
Claim 2
Dependent Claim
132 words
A skimmer apparatus for collecting solid material floating in a liquid, comprising: a hollow receptacle with open upper edges providing inlet means thereinto; a pump located within said receptacle just above the bottom thereof, said pump constructed and arranged with inlet opening thereinto located in the lower side thereof; an opening in the bottom of said receptacle opposite said pump inlet opening, said receptacle bottom opening being of smaller diameter than said pump inlet opening; and conduit means connected to said pump for the discharge of material collected by said pump, whereby material flowing over said receptacle upper edge is mixed with liquid introduced through said receptacle bottom opening by pump suction and head pressure to permit mixing of said solid material and liquid for discharge of said material by said pump.
Claim 3
Dependent Claim
21 words
The skimmer apparatus as set forth in claim 1 wherein said conduit is connected to the upper portion of said receptacle.
Claim 4
Dependent Claim
31 words
Skimmer apparatus as set forth in claim 1 further including means for positioning said receptacle at the surface of the liquid in response to changes in the level of said liquid.
Claim 5
Dependent Claim
71 words
The skimmer apparatus as set forth in claim 3, wherein said level positioning means includes: control means for moving said receptacle upwardly or downwardly in response to change in the level of the liquid; and buoyant signal means for positioning in said liquid for movement with the level of said liquid and for providing a signal to said control means in response to a change in the level of said liquid.
Claim 6
Dependent Claim
88 words
The skimmer apparatus as set forth in claim 4, wherein said buoyant signal means includes: a hollow housing attached to said receptacle for fluid communication with said liquid; a buoyant member positioned in the liquid in said hollow housing, said buoyant member moving upwardly and downwardly with said housing in response to changes in the level of the liquid therein; and sonic means mounted with said housing for providing an electrical signal to said control means in response to the position of said buoyant member of said housing.
Claim 7
Dependent Claim
43 words
The skimmer apparatus as set forth in claim 5, wherein said buoyant member includes: a buoyant portion positioned in the liquid and a signal reflecting member attached to said buoyant portion and extending upwardly therefrom to a position above level of the fluid.
Claim 8
Dependent Claim
38 words
The skimmer apparatus as set forth in claim 6, wherein said sonic means directs a sonic signal within said housing for reflection off said reflective surface in order to respond to changes in the level of the liquid.
Claim 9
Dependent Claim
32 words
The skimmer apparatus as set forth in claim 1 wherein said upper edges of said receptacle is tapered on the outside thereof for enhancing movement of floating solid materials into said receptacle.
Claim 10
Dependent Claim
33 words
The skimmer apparatus as set forth in claim 1, wherein said conduit means is supportively attached to the sidewall of said receptacle, whereby said pump is suspended above the bottom of said receptacle.
Claim 11
Dependent Claim
142 words
A skimmer apparatus for collecting solid material floating in a liquid, comprising: a hollow receptacle with open upper edges providing inlet means thereinto; a pump located within said receptacle just above the bottom thereof, said pump constructed and arranged with inlet opening thereinto located in the lower side thereof; an opening in the bottom of said receptacle opposite said pump inlet opening, said receptacle bottom opening being of such diameter to permit less fluid to enter said receptacle than the inlet capacity of said pump; and conduit means connected to said pump for the discharge of material collected by said pump; whereby material flowing over said receptacle upper edge is mixed with liquid introduced through said receptacle bottom opening by pump suction and head pressure to permit mixing of said solid material and liquid for discharge of said material by said pump.
Claim 12
Dependent Claim
142 words
A skimmer apparatus for collecting solid material floating in a liquid, comprising: a hollow receptacle with open upper edges providing inlet means thereinto; a pump located within said receptacle just above the bottom thereof, said pump constructed and arranged with inlet opening thereinto located in the lower side thereof; an opening in the bottom of said receptacle opposite said pump inlet opening, said receptacle bottom opening being of such diameter to permit less fluid to enter said receptacle than the inlet capacity of said pump; and conduit means connected to said pump for the discharge of material collected by said pump; whereby material flowing over said receptacle upper edge is mixed with liquid introduced through said receptacle bottom opening by pump suction and head pressure to permit mixing of said solid material and liquid for discharge of said material by said pump.
References Cited (Backward Citations)
US658639A
Cited
US2837212A
Cited
US3349030A
Cited
US3465889A
Cited
US3534859A
Cited
US3741391A
Cited
US3762557A
Cited
US3752317A
Cited
US3853768A
Cited
US3876540A
Cited
US4024063A
Cited
DE2308048A1
Cited
US3944489A
Cited
US4032449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |