Patent US3346842A successfully refreshed from Google Patents.
US3346842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle detectors
Assignee: Laboratory For Electronics Inc
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Filing: 1965-04-20
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Granted: 1967-10-10
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Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 Harold A Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:21
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
APPARATUS FOR DETECTING PASSAGE OF A VEHICLE COMPRISING A SEMICONDUCTOR, A CASING INCLUDING AN INSULATING DIELECTRIC, SAID SEMICONDUCTOR INCLUDING EMITTER, COLLECTOR AND BASE POSITIONED IN SAID DIELECTRIC WITHIN SAID CASING, MEANS FOR MOUNTING SAID CASING WITHIN A ROADWAY, SAID DIELECTRIC BEING A PRESSURE-TRANSMITTING MEANS FOR TRANSMITTING VIBRATIOSN FROM SAID CASING TO SAID SEMICONDUCTOR, MEANS FOR BIASING SAID EMITTER IN ONE DIRECTION, OUTPUT MEANS INCLUDING A REVERSE BIASED DIODE AND A TERMINAL CONNECTED TO SAID COLLECTOR WHEREBY VIBRATIONS CAUSED BY THE PASSAGE OF A VEHICLE ON THE ROADWAY ARE TRANSMITTED TO SAID SEMICONDUCTOR TO GENERATE A PULSE AT SAID OUTPUT TERMINAL.
Claim 2
Dependent Claim
100 words
APPARATUS FOR DETECTING PASSAGE OF A VEHICLE COMPRISING A SEMICONDUCTOR, A CASING INCLUDING AN INSULATING DIELECTRIC, SAID SEMICONDUCTOR INCLUDING EMITTER, COLLECTOR AND BASE POSITIONED IN SAID DIELECTRIC WITHIN SAID CASING, MEANS FOR MOUNTING SAID CASING WITHIN A ROADWAY, SAID DIELECTRIC BEING A PRESSURE-TRANSMITTING MEANS FOR TRANSMITTING VIBRATIOSN FROM SAID CASING TO SAID SEMICONDUCTOR, MEANS FOR BIASING SAID EMITTER IN ONE DIRECTION, OUTPUT MEANS INCLUDING A REVERSE BIASED DIODE AND A TERMINAL CONNECTED TO SAID COLLECTOR WHEREBY VIBRATIONS CAUSED BY THE PASSAGE OF A VEHICLE ON THE ROADWAY ARE TRANSMITTED TO SAID SEMICONDUCTOR TO GENERATE A PULSE AT SAID OUTPUT TERMINAL.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |