US3150592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric pump
Assignee: Individual
•
Filing: 1962-08-17
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Granted: 1964-09-29
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Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
- 👤 Charles L Stec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0655; F; F04; F04B; F04B43/00; F04B43/08; F04B43/09; F04B43/095
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PUMP COMPRISING A PAIR OF CONCENTRIC BODIES EACH OF SAID BODIES HAVING A PUMPING SURFACE, SAID BODIES BEING SPACED TO PROVIDE A PUMP CHAMBER THEREBETWEEN, A FIRST OF SAID BODIES HAVING PIEZOELECTRIC CHARACTERISTICS CAUSING AN EXPANSION AND CONTRACTION IN ALL DIRECTIONS NORMAL TO SAID PUMPING SURFACE, FLUID INLET MEANS TO AND FLUID OUTLET MEANS FROM SAID CHAMBER, AND ONE-WAY VALVE MEANS CONTROLLING SAID INLET MEANS AND OUTLET MEANS, SAID FIRST BODY HAVING SEPARATED ELECTRICITY-CONDUCTING SURFACE PORTIONS ADAPTED TO HAVING A PUMPING VOLTAGE APPLIED THERETO, AND MEANS ELECTRICALLY CONNECTED TO SAID CONDUCTING PORTIONS FOR APPLYING A VARYING VOLTAGE ACROSS SAID CONDUCTING PORTIONS FOR ALTERNATELY AND REPEATEDLY INCREASING AND DECREASING THE VOLUME OF SAID CHAMBER.
Claim 2
Dependent Claim
114 words
A PUMP COMPRISING A PAIR OF CONCENTRIC BODIES EACH OF SAID BODIES HAVING A PUMPING SURFACE, SAID BODIES BEING SPACED TO PROVIDE A PUMP CHAMBER THEREBETWEEN, A FIRST OF SAID BODIES HAVING PIEZOELECTRIC CHARACTERISTICS CAUSING AN EXPANSION AND CONTRACTION IN ALL DIRECTIONS NORMAL TO SAID PUMPING SURFACE, FLUID INLET MEANS TO AND FLUID OUTLET MEANS FROM SAID CHAMBER, AND ONE-WAY VALVE MEANS CONTROLLING SAID INLET MEANS AND OUTLET MEANS, SAID FIRST BODY HAVING SEPARATED ELECTRICITY-CONDUCTING SURFACE PORTIONS ADAPTED TO HAVING A PUMPING VOLTAGE APPLIED THERETO, AND MEANS ELECTRICALLY CONNECTED TO SAID CONDUCTING PORTIONS FOR APPLYING A VARYING VOLTAGE ACROSS SAID CONDUCTING PORTIONS FOR ALTERNATELY AND REPEATEDLY INCREASING AND DECREASING THE VOLUME OF SAID CHAMBER.
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |