Patent US2802487A successfully refreshed from Google Patents.
US3249701A
Expired / Lapsed
US
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Fluid supported transducer with laterally stressed resilient flexible diaphragm
Assignee: RCA Corp
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Filing: 1961-12-28
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Granted: 1966-05-03
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Silver Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:11
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
APPARATUS FOR COOPERATION WITH A MEMBER PRESENTING A BEARING SURFACE, WHICH APPARATUS COMPRISES: (A) A FLEXIBLE, RESILIENT SUPPORT MEMBER HAVING A SURFACE ADAPTED TO BE SPACED FROM SAID BEARING SURFACE BY A FLOWING FLUID; (B) SAID SUPPORT MEMBER SURFACE BEING MOVABLE TOWARD AND AWAY FROM SAID BEARING SURFACE IN RESPONSE TO VARIATIONS IN FLUID PRESSURE BETWEEN SAID SURFACES; (C) MEANS MOUNTING SAID SUPPORT MEMBER UNDER A LATERAL STRESS, SAID LATERAL STRESS BEING OF A MAGNITUDE CAUSING SAID SUPPORT MEMBER TO EXHBIT A RESONANT
Claim 2
Dependent Claim
83 words
APPARATUS FOR COOPERATION WITH A MEMBER PRESENTING A BEARING SURFACE, WHICH APPARATUS COMPRISES: (A) A FLEXIBLE, RESILIENT SUPPORT MEMBER HAVING A SURFACE ADAPTED TO BE SPACED FROM SAID BEARING SURFACE BY A FLOWING FLUID; (B) SAID SUPPORT MEMBER SURFACE BEING MOVABLE TOWARD AND AWAY FROM SAID BEARING SURFACE IN RESPONSE TO VARIATIONS IN FLUID PRESSURE BETWEEN SAID SURFACES; (C) MEANS MOUNTING SAID SUPPORT MEMBER UNDER A LATERAL STRESS, SAID LATERAL STRESS BEING OF A MAGNITUDE CAUSING SAID SUPPORT MEMBER TO EXHBIT A RESONANT
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |