US3305737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducing key
Assignee: Xerox Corp
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Filing: 1963-12-26
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Granted: 1967-02-21
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 James E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/965; H03K17/967
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DATA INPUT KEY COMPRISING (A) AN ELONGATED HOLLOW BODY MEMBER; (B) A PRESSURE DEFORMABLE CAP SECURED TO THE TOP PORTION OF SAID BODY MEMBER; (C) AN UNCASED TRANSISTOR UNIT HAVING A BASE, AN EMITTER AND A SEMICONDUCTOR CRYSTAL MOUNTED WITHIN SAID BODY AND CONNECTED TO A SOURCE OF POTENTIAL; AND, (D) A PRESSURE PROBE SUPPORTED WITHIN SAID BODY BETWEEN SAID CAP AND SAID TRANSISTOR, SAID PRESSURE PROBE BEING SENSITIVE TO A PRESSURE DEFORMATION OF SAID CAP AND RESPONSIVE THERETO TO EXERT A STRAIN ON THE CRYSTAL OF SAID TRANSISTOR IN THE BASE TO EMITTER REGION THEREOF AND EFFECT AN ELECTRICAL SIGNAL OUTPUT TO UTILIZATION APPARATUS.
Claim 2
Dependent Claim
106 words
A DATA INPUT KEY COMPRISING (A) AN ELONGATED HOLLOW BODY MEMBER; (B) A PRESSURE DEFORMABLE CAP SECURED TO THE TOP PORTION OF SAID BODY MEMBER; (C) AN UNCASED TRANSISTOR UNIT HAVING A BASE, AN EMITTER AND A SEMICONDUCTOR CRYSTAL MOUNTED WITHIN SAID BODY AND CONNECTED TO A SOURCE OF POTENTIAL; AND, (D) A PRESSURE PROBE SUPPORTED WITHIN SAID BODY BETWEEN SAID CAP AND SAID TRANSISTOR, SAID PRESSURE PROBE BEING SENSITIVE TO A PRESSURE DEFORMATION OF SAID CAP AND RESPONSIVE THERETO TO EXERT A STRAIN ON THE CRYSTAL OF SAID TRANSISTOR IN THE BASE TO EMITTER REGION THEREOF AND EFFECT AN ELECTRICAL SIGNAL OUTPUT TO UTILIZATION APPARATUS.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |