Patent US4526514A successfully refreshed from Google Patents.
US4526514A
Expired / Lapsed
US
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Apparatus for pumping a viscous mass
Assignee: Individual
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Filing: 1984-03-29
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Granted: 1985-07-02
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Expires: 2004-03-29
Abstract
Abstract Apparatus comprising a barge or sled adapted to float or slide on the surface of a heavy viscous mass, a pump support frame, a metal net or latticed cage suspended under the pump support frame, the net or cage penetrating the mass to a slight depth to define a surface section of the mass, and a bed of heating resistors disposed slightly above the base of the cage to enter the section to heat and fluidize it sufficiently to be pumped.
Inventors
- 👤 Jean-Claude M. Duverne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:19
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/04; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
68 words
Apparatus for pumping a heavy viscous mass comprising a barge adapted to slide on the surface of said mass, said barge comprising a frame, a pump fixed to said frame, said pump being in communication with said mass, a net suspended by said frame and penetrating slightly said mass to define a surface section of said mass, and heating means disposed slightly above the base of said net.
Claim 2
Dependent Claim
68 words
Apparatus for pumping a heavy viscous mass comprising a barge adapted to slide on the surface of said mass, said barge comprising a frame, a pump fixed to said frame, said pump being in communication with said mass, a net suspended by said frame and penetrating slightly said mass to define a surface section of said mass, and heating means disposed slightly above the base of said net.
Claim 3
Dependent Claim
26 words
Apparatus according to claim 1 wherein said frame is of rectangular configuration and wherein flotation devices are disposed respectively on the longer sides of said frame.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1 wherein said pump is adapted to aspirate and propel said surface section.
Claim 5
Dependent Claim
38 words
Apparatus according to claim 1 wherein said heating means comprises multiple heating resistors which are fixed to said frame and are disbursed over a surface area of said mass approximately equal to the surface area of said net.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4 wherein said resistors are of a staggered configuration in a plane substantially parallel to the surface of said mass.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 4 wherein said frame is rectangular and wherein electrical supply leads are connected to said heating resistors and wherein said leads are bent upwardly on the long sides of said frame.
Claim 8
Dependent Claim
71 words
Apparatus for pumping a heavy viscous mass comprising a barge adapted to slide on the surface of said mass, said barge comprising a frame, a pump fixed to said frame, a net suspended by said frame and penetrating slightly said mass to define a surface section of said mass, heating means disposed slightly above the base of said net, and said pump being adpated to aspirate and propel said surface section.
Claim 9
Dependent Claim
71 words
Apparatus for pumping a heavy viscous mass comprising a barge adapted to slide on the surface of said mass, said barge comprising a frame, a pump fixed to said frame, a net suspended by said frame and penetrating slightly said mass to define a surface section of said mass, heating means disposed slightly above the base of said net, and said pump being adpated to aspirate and propel said surface section.
References Cited (Backward Citations)
US2224403A
Cited
GB593294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |