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US3815329A
Expired / Lapsed
US
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System for unloading oil
Assignee: Thune Eureka AS
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Filing: 1973-05-14
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Granted: 1974-06-11
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Expires: 1993-05-14
Abstract
Abstract A separator tank for separating air from oil in an oil unloading system is provided with a pressure sensitive device connected to means for maintaining a predetermined pressure in the tank by controlling an adjustable valve on the discharge side of a pump, the inlet side of which being connected to the separator tank.
Inventors
- 👤 Rolfsen H Pande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:10
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0063; F; F04; F04D; F04D15/00; F04D15/0005; F04D15/0022; F04D9/00; F04D9/001
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
Improvement in a system for unloading oil from tankers and the like including a discharge pump, a gas-liquid separator tank connected to the suction side of the pump, an adjustable valve connected to the pressure side of the pump, a sensor communicating with said tank for controlling the adjustable valve, a vacuum pump connected to said tank for providing a partial vacuum in the separator tank, said sensor sensing the degree of partial vacuum in the separator tank and connected to a control circuit for the adjustable valve so that said valve restricts liquid flow in response to a decrease in the degree of partial vacuum.
Claim 2
Dependent Claim
106 words
Improvement in a system for unloading oil from tankers and the like including a discharge pump, a gas-liquid separator tank connected to the suction side of the pump, an adjustable valve connected to the pressure side of the pump, a sensor communicating with said tank for controlling the adjustable valve, a vacuum pump connected to said tank for providing a partial vacuum in the separator tank, said sensor sensing the degree of partial vacuum in the separator tank and connected to a control circuit for the adjustable valve so that said valve restricts liquid flow in response to a decrease in the degree of partial vacuum.
Claim 3
Dependent Claim
32 words
Improvement according to claim 1, characterized in that the sensor is adapted to control the capacity of the vacuum pump to maintain a desired degree of partial vacuum in the separator tank.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |