US4167819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator
Assignee: United States Department of Energy
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Filing: 1977-12-05
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Granted: 1979-09-18
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Expires: 1997-12-05
Abstract
Abstract The pressure within a pressurized flow reactor operated under harsh environmental conditions is controlled by establishing and maintaining a fluidized bed of uniformly sized granular material of selected density by passing the gas from the reactor upwardly therethrough at a rate sufficient to fluidize the bed and varying the height of the bed by adding granular material thereto or removing granular material therefrom to adjust the backpressure on the flow reactor.
Inventors
- 👤 Robert W. Ebeling, Jr.
- 👤 Robert B. Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1809; F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F27; F27B; F27B15/00; F27B15/02; F27B15/10; B01J2208/00; B01J2208/00008; B01J2208/00539
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A method of maintaining a desired back pressure on a variable flow gas stream comprising flowing said gas stream upwardly through a bed of granular material to establish and maintain a fluidized bed of said granular material and varying the height of the bed of granular material to control the back pressure on the variable flow gas stream.
Claim 2
Independent Claim
58 words
A method of maintaining a desired back pressure on a variable flow gas stream comprising flowing said gas stream upwardly through a bed of granular material to establish and maintain a fluidized bed of said granular material and varying the height of the bed of granular material to control the back pressure on the variable flow gas stream.
Claim 3
Independent Claim
76 words
A method of maintaining relatively constant the pressure within a pressurized variable rate flow reactor comprising passing the gas exiting the flow reactor upwardly through a bed of uniformly sized granular material of selected density to establish and maintain a fluidized bed of said granular material, the velocity of flow of the gas being effective for this purpose and varying the height of the bed of granular material to control the pressure in the flow reactor.
Claim 4
Independent Claim
76 words
A method of maintaining relatively constant the pressure within a pressurized variable rate flow reactor comprising passing the gas exiting the flow reactor upwardly through a bed of uniformly sized granular material of selected density to establish and maintain a fluidized bed of said granular material, the velocity of flow of the gas being effective for this purpose and varying the height of the bed of granular material to control the pressure in the flow reactor.
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) | 1982-09-17 | 1983-03-19 | 1983-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-17 | 1987-03-19 | 1987-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-17 | 1991-03-19 | 1991-09-18 | $7700.00 | Window Closed / Lapsed |