Patent US3192860A successfully refreshed from Google Patents.
US3192860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-acting bellows pump
Assignee: Universal Oil Products Co
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Filing: 1963-10-28
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Granted: 1965-07-06
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Leslie C Hardison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:07
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/04; F04B; F04B43/00; F04B43/08; F04B43/086; F04B43/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A FLUID PUMP COMPRISING: (1) A PAIR OF FLUID-TIGHT CHAMBERS; (2) A RESILIENT BELLOWS MEMBER MOUNTED WITHIN EACH OF SAID CHAMBERS, SAID BELLOWS MEMBER BEING FREE TO EXPAND AND CONTRACT WITHIN ITS CHAMBER AND THE INTERIOR THEREOF BEING SEALED FROM THE THE INTERIOR OF THE CHAMBER; (3) A BIDIRECTIONAL POSITIVE DISPLACEMENT PUMPING MEANS; (4) MEANS PROVIDING FLUID COMMUNICATION FROM THE INTERIOR OF ONE BELLOWS MEMBER THROUGH SAID PUMPING MEANS TO THE INTERIOR OF THE OTHER BELLOWS MEMBER; (5) A BODY OF LIQUID FILLING SAID BELLOWS MEMBERS AND SAID PUMPING MEANS; (6) FIRST AND SECOND VALVED SUCTION CONDUITS SEPARATELY CONNECTING WITH SAID CHAMBERS; (7) FIRST AND SECOND VALVED DISCHARGE CONDUITS SEPARATELY CONNECTING WITH SAID CHAMBERS; (8) MEANS FOR DRIVING SAID PUMPING MEANS IN BOTH FORWARD AND REVERSE DIRECTIONS; AND (9) MEANS FOR PERIODICALLY REVERSING THE DRIVING DIRECTION OF SAID PUMPING MEANS IN RESPONSE TO A PREDETERMINED DISPLACEMENT OF SAID PUMPING MEANS IN EACH DIRECTION.
Claim 2
Dependent Claim
153 words
A FLUID PUMP COMPRISING: (1) A PAIR OF FLUID-TIGHT CHAMBERS; (2) A RESILIENT BELLOWS MEMBER MOUNTED WITHIN EACH OF SAID CHAMBERS, SAID BELLOWS MEMBER BEING FREE TO EXPAND AND CONTRACT WITHIN ITS CHAMBER AND THE INTERIOR THEREOF BEING SEALED FROM THE THE INTERIOR OF THE CHAMBER; (3) A BIDIRECTIONAL POSITIVE DISPLACEMENT PUMPING MEANS; (4) MEANS PROVIDING FLUID COMMUNICATION FROM THE INTERIOR OF ONE BELLOWS MEMBER THROUGH SAID PUMPING MEANS TO THE INTERIOR OF THE OTHER BELLOWS MEMBER; (5) A BODY OF LIQUID FILLING SAID BELLOWS MEMBERS AND SAID PUMPING MEANS; (6) FIRST AND SECOND VALVED SUCTION CONDUITS SEPARATELY CONNECTING WITH SAID CHAMBERS; (7) FIRST AND SECOND VALVED DISCHARGE CONDUITS SEPARATELY CONNECTING WITH SAID CHAMBERS; (8) MEANS FOR DRIVING SAID PUMPING MEANS IN BOTH FORWARD AND REVERSE DIRECTIONS; AND (9) MEANS FOR PERIODICALLY REVERSING THE DRIVING DIRECTION OF SAID PUMPING MEANS IN RESPONSE TO A PREDETERMINED DISPLACEMENT OF SAID PUMPING MEANS IN EACH DIRECTION.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |