Patent US3239496A successfully refreshed from Google Patents.
Patent US3404243A successfully refreshed from Google Patents.
US3404243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload protection of pressure sensitive transducer
Assignee: Siemens AG
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Filing: 1965-08-12
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Granted: 1968-10-01
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Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 Krieger Friedrich
- 👤 Pascher Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:02
CPC Classifications
H; H04; H04R; H04R23/00; H04R23/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A CRYSTAL TRANSDUCER, SUCH A A MICROPHONE, HAVING A SEMICONDUCTOR CONTAINING A PN JUNCTION UPON WHICH PRESSURE IS EXERTED BY MOVEMENTS OF A CONTROL MEMBER, THROUGH A PRESSURE EXERTING ELEMENT ENGAGED WITH THE SEMICONDUCTOR, THE IMPROVEMENT COMPRISING A TRANSMITTING MEMBER CONNECTED TO THE CONTROL MEMBER FOR CONTROL THEREBY AND HAVING AT LEAST ONE SIDE WHICH EXTENDS ESSENTIALLY IN THE DIRECTION OF MOTION THEREOF IN RESPONSE TO MOTION OF THE CONTROL MEMBER, AND A RESILIENT MOVABLE HOLDING MEMBER CARRYING SAID PRESSURE ELEMENT, SAID TRANSMITTING MEMBER BEING IN FORCE-TRANSMITTING ENGAGEMENT WITH THE HOLDING MEMBER ONLY SO LONG AS THE FORCE EXERTED ON THE TRANSMITTING MEMBER BY THE CONTROL MEMBER DOES NOT EXCEED A PREDETERMINED MAGNITUDE.
Claim 2
Dependent Claim
114 words
IN A CRYSTAL TRANSDUCER, SUCH A A MICROPHONE, HAVING A SEMICONDUCTOR CONTAINING A PN JUNCTION UPON WHICH PRESSURE IS EXERTED BY MOVEMENTS OF A CONTROL MEMBER, THROUGH A PRESSURE EXERTING ELEMENT ENGAGED WITH THE SEMICONDUCTOR, THE IMPROVEMENT COMPRISING A TRANSMITTING MEMBER CONNECTED TO THE CONTROL MEMBER FOR CONTROL THEREBY AND HAVING AT LEAST ONE SIDE WHICH EXTENDS ESSENTIALLY IN THE DIRECTION OF MOTION THEREOF IN RESPONSE TO MOTION OF THE CONTROL MEMBER, AND A RESILIENT MOVABLE HOLDING MEMBER CARRYING SAID PRESSURE ELEMENT, SAID TRANSMITTING MEMBER BEING IN FORCE-TRANSMITTING ENGAGEMENT WITH THE HOLDING MEMBER ONLY SO LONG AS THE FORCE EXERTED ON THE TRANSMITTING MEMBER BY THE CONTROL MEMBER DOES NOT EXCEED A PREDETERMINED MAGNITUDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |