Patent US3270672A successfully refreshed from Google Patents.
US3270672A
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Pump apparatus
Assignee: Union Oil Company of California
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Filing: 1963-12-23
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Granted: 1966-09-06
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Robert M Haines
- 👤 Donald L Klass
- 👤 Thomas W Martinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:20
CPC Classifications
F; F04; F04B; F04B17/00; F04B17/003; H; H10; H10N; H10N30/00; H10N30/20; H10N30/204; H10N30/2047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PUMP COMPRISING A VESSEL HAVING COMMUNICATING INLET AND OUTLET OPENINGS, A FLEXIBLE DIAPHRAGM EXPOSED TO THE INTERIOR OF SAID VESSEL, AN ELECTROSTRICTIVE TRANSDUCER, COMPRISING AN ELECTROSTRICTIVE LIQUID CONFINED BETWEEN TWO SPACED MEMBERS HAVING OPPOSING SURFACES, ADAPTED TO BE DEFORMED UPON THE APPLICATION OF AN ELECTRIC FIELD THERETO AND CAUSE MOVEMENT OF SAID DIAPHRAGM UPON THE DEFORMATION THEREOF, AND MEANS FOR APPLYING A TRANSIENT ELECTRIC FIELD TO SAID ELECTROSTRICTIVE TRANSDUCER.
Claim 2
Dependent Claim
70 words
A PUMP COMPRISING A VESSEL HAVING COMMUNICATING INLET AND OUTLET OPENINGS, A FLEXIBLE DIAPHRAGM EXPOSED TO THE INTERIOR OF SAID VESSEL, AN ELECTROSTRICTIVE TRANSDUCER, COMPRISING AN ELECTROSTRICTIVE LIQUID CONFINED BETWEEN TWO SPACED MEMBERS HAVING OPPOSING SURFACES, ADAPTED TO BE DEFORMED UPON THE APPLICATION OF AN ELECTRIC FIELD THERETO AND CAUSE MOVEMENT OF SAID DIAPHRAGM UPON THE DEFORMATION THEREOF, AND MEANS FOR APPLYING A TRANSIENT ELECTRIC FIELD TO SAID ELECTROSTRICTIVE TRANSDUCER.
References Cited (Backward Citations)
US1405595A
Cited
US2317166A
Cited
US3107630A
Cited
US3070775A
Cited
US3029743A
Cited
US3135208A
Cited
US3150592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |