Patent US3208392A successfully refreshed from Google Patents.
US3208392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible gear pump with unidire ctional flow
Assignee: Copeland Refrigeration Corp
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Filing: 1962-10-15
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Granted: 1965-09-28
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Christopher O Garrison
- 👤 James A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:08
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
IN A UNIDIRECTIONAL FLOW REVERSIBLE GEAR PUMP, A PAIR OF GEAR PUMP ELEMENTS, MEANS FOR ROTATING SAID ELEMENTS IN EITHER OF OPPOSITE DIRECTIONS, AN INLET PORT ADJACENT SAID PUMP ELEMENTS AND ADAPTED TO DELIVER FLUID THERETO IN RESPONSE TO ROTATION OF THE PUMP ELEMENTS IN EITHER DIRECTION, A PORTIING PLATE ADJACENT SAID PUMP ELEMENTS, FIRST AND SECOND CIRCUMFERENTIALLY SPACED DISCHARGE PORTS IN SAID PORTING PLATE, AND A REED COMPRISING A RESILIENT FLAT MEMBER HAVING EARS OVERLAPPING SAID FIRST AND SECOND DISCHARGE PORTS, SAID EARS BEING RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN ONE DIRECTION TO OPEN ONE DISCHARGED PORT AND CLOSE THE OTHER, AND RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN THE OTHER DIRECTION TO OPEN SAID OTHER DISCHARGE PORT AND CLOSED SAID ONE DISCHARGE PORT.
Claim 2
Dependent Claim
136 words
IN A UNIDIRECTIONAL FLOW REVERSIBLE GEAR PUMP, A PAIR OF GEAR PUMP ELEMENTS, MEANS FOR ROTATING SAID ELEMENTS IN EITHER OF OPPOSITE DIRECTIONS, AN INLET PORT ADJACENT SAID PUMP ELEMENTS AND ADAPTED TO DELIVER FLUID THERETO IN RESPONSE TO ROTATION OF THE PUMP ELEMENTS IN EITHER DIRECTION, A PORTIING PLATE ADJACENT SAID PUMP ELEMENTS, FIRST AND SECOND CIRCUMFERENTIALLY SPACED DISCHARGE PORTS IN SAID PORTING PLATE, AND A REED COMPRISING A RESILIENT FLAT MEMBER HAVING EARS OVERLAPPING SAID FIRST AND SECOND DISCHARGE PORTS, SAID EARS BEING RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN ONE DIRECTION TO OPEN ONE DISCHARGED PORT AND CLOSE THE OTHER, AND RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN THE OTHER DIRECTION TO OPEN SAID OTHER DISCHARGE PORT AND CLOSED SAID ONE DISCHARGE PORT.
Claim 3
Dependent Claim
147 words
IN A UNIDIRECTIONAL FLOW REVERSIBLE GEAR PUMP, A PAIR OF GEAR PUMP ELEMENTS, MEANS FOR ROTATING SAID ELEMENTS IN EITHER OF OPPOSITE DIRECTIONS, AN INLET PORT ADJACENT SAID PUMP ELEMENTS AND ADAPTED TO DELIVER FLUID THEREINTO IN RESPONSE TO ROTATION OF THE PUMP ELEMENTS IN EITHER DIRECTION, A PORTING PLATE ADJACENT SAID PUMP ELEMENTS FIRST AND SECOND CIRCUMFERENTIALLY SPACED DISCHARGE PORTS IN SAID PORTING PLATE, A REED COMPRISING A RESILIENT FLAT MEMBER HAVING EARS OVERLAPPING SAID FIRST AND SECOND DISCHARGE PORTS, SAID EARS BEING RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN ONE DIRECTION TO OPEN ONE DISCHARGE PORT AND CLOSE THE OTHER, AND RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN THE OTHER DIRECTION TO OPEN SAID OTHER DISCHARGE PORT AND CLOSE SAID ONE DISCHARGE PORT, AND MEANS FOR HOLDING SAID PORTING PLATE AND REED AGAINST RELATIVE ROTATION.
Claim 4
Dependent Claim
147 words
IN A UNIDIRECTIONAL FLOW REVERSIBLE GEAR PUMP, A PAIR OF GEAR PUMP ELEMENTS, MEANS FOR ROTATING SAID ELEMENTS IN EITHER OF OPPOSITE DIRECTIONS, AN INLET PORT ADJACENT SAID PUMP ELEMENTS AND ADAPTED TO DELIVER FLUID THEREINTO IN RESPONSE TO ROTATION OF THE PUMP ELEMENTS IN EITHER DIRECTION, A PORTING PLATE ADJACENT SAID PUMP ELEMENTS FIRST AND SECOND CIRCUMFERENTIALLY SPACED DISCHARGE PORTS IN SAID PORTING PLATE, A REED COMPRISING A RESILIENT FLAT MEMBER HAVING EARS OVERLAPPING SAID FIRST AND SECOND DISCHARGE PORTS, SAID EARS BEING RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN ONE DIRECTION TO OPEN ONE DISCHARGE PORT AND CLOSE THE OTHER, AND RESPONSIVE TO FLUID FLOW CREATED BY ROTATION OF SAID PUMP ELEMENTS IN THE OTHER DIRECTION TO OPEN SAID OTHER DISCHARGE PORT AND CLOSE SAID ONE DISCHARGE PORT, AND MEANS FOR HOLDING SAID PORTING PLATE AND REED AGAINST RELATIVE ROTATION.
References Cited (Backward Citations)
US1780121A
Cited
US1768638A
Cited
US2194726A
Cited
US2277270A
Cited
US2383153A
Cited
US2759664A
Cited
US2829602A
Cited
US3150599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |