Patent US3256114A successfully refreshed from Google Patents.
US3256114A
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Method for preloading ultrasonic transducer
Assignee: Aerojet Rocketdyne Inc
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Filing: 1962-01-23
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Granted: 1966-06-14
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Richard B Houghton
- 👤 Steven A Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:15
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF UNIFORMLY PRELOADING AN ULTROSONIC TRANSDUCER ELEMENT COMPRISING THE STEPS OF: APPLYING A COATING TO ALL SURFACES OF THE TRANSDUCER ELEMENT OF AN EPOXY-RESIN HAVING A COEFFICIENT OF THEMAL EXPANSION IN THE CURED STATE OF THREE TO FIVE TIMES THAT OF THE TRANSDUCER ELEMENT, HEAT TREATING THE COATED TRANSDUCER ELEMENT FOR AN INTERVAL OF TIME AND AT A TEMPERATURE TO EFFECT CURING. COOLING THE COATED TRANDSUCER ELEMENT TO AMBIENT TEMPERATURE, WHEREIN SAID EPOXY-RESIN IS CHARACTERIZED BY LOW
Claim 2
Independent Claim
79 words
A METHOD OF UNIFORMLY PRELOADING AN ULTROSONIC TRANSDUCER ELEMENT COMPRISING THE STEPS OF: APPLYING A COATING TO ALL SURFACES OF THE TRANSDUCER ELEMENT OF AN EPOXY-RESIN HAVING A COEFFICIENT OF THEMAL EXPANSION IN THE CURED STATE OF THREE TO FIVE TIMES THAT OF THE TRANSDUCER ELEMENT, HEAT TREATING THE COATED TRANSDUCER ELEMENT FOR AN INTERVAL OF TIME AND AT A TEMPERATURE TO EFFECT CURING. COOLING THE COATED TRANDSUCER ELEMENT TO AMBIENT TEMPERATURE, WHEREIN SAID EPOXY-RESIN IS CHARACTERIZED BY LOW
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |