Patent US3347129A successfully refreshed from Google Patents.
US3347129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectric range finder
Assignee: Individual
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Filing: 1964-10-29
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Granted: 1967-10-17
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm J Lohninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:14
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A PHOTOELECTRIC RANGE FINDER COMPRISING A FIRST AND SECOND TELESCOPE LATERALLY SPACED FROM EACH OTHER FOR OBTAINING LIGHT BEAMS CONTAINING THE IMAGE OF A TARGET, A TARGET ACQUISITION TELESCOPE POSITIONED INTERMEDIATE SAID FIRST AND SECOND TELESCOPES AND MOVABLE IN THE SAME PLANE THEREWITH, ADJUSTABLE OPTICAL COMPENSATOR MEANS IN SAID SECOND TELESCOPE FOR IMAGE COINCIDENCE, A DOUBLE BEAM SPLITTING PRISM POSITIONED BETWEEN THE EXIT ENDS OF SAID FIRST AND SECOND TELESCOPES WHEREBY THE LIGHT BEAMS FROM SAID FIRST AND SECOND TELESCOPES ARE EACH SPLIT INTO A PAIR OF PARALLEL BEAMS, A PHOTOELECTRIC TRANSDUCER, A LIGHT CHOPPER POSITIONED INTERMEDIATE SAID PRISM AND PHOTOELECTRIC TRANSDUCER, MEANS FOR DIRECTING THE TWO PAIRS OF PARALLEL BEAMS FORMED BY SAID DOUBLE BEAM SPLITTING PRISM TO SAID LIGHT CHOPPER AND ONTO SAID PHOTOELECTRIC TRANSDUCER, AND AN ELECTRICAL BRIDGE HAVING THE OUTPUT OF SAID PHOTOELEC TRIC TRANSDUCER CONNECTED ACROSS ONE OF ITS DIAGONALS AND A CURRENT INDICATING MEANS CONNECTED ACROSS ITS OPPOSITE DIAGONAL FOR INDICATING PHOTOMETRIC COINCIDENCE DUE TO OPTICAL COMPENSATION OBTAINED BY MEANS OF SAID ADJUSTABLE OPTICAL COMPENSATOR, AND A RANGE SCALE MECHANICALLY LINKED TO SAID OPTICAL COMPENSATOR FOR INDICATING THE RANGE.
Claim 2
Dependent Claim
185 words
A PHOTOELECTRIC RANGE FINDER COMPRISING A FIRST AND SECOND TELESCOPE LATERALLY SPACED FROM EACH OTHER FOR OBTAINING LIGHT BEAMS CONTAINING THE IMAGE OF A TARGET, A TARGET ACQUISITION TELESCOPE POSITIONED INTERMEDIATE SAID FIRST AND SECOND TELESCOPES AND MOVABLE IN THE SAME PLANE THEREWITH, ADJUSTABLE OPTICAL COMPENSATOR MEANS IN SAID SECOND TELESCOPE FOR IMAGE COINCIDENCE, A DOUBLE BEAM SPLITTING PRISM POSITIONED BETWEEN THE EXIT ENDS OF SAID FIRST AND SECOND TELESCOPES WHEREBY THE LIGHT BEAMS FROM SAID FIRST AND SECOND TELESCOPES ARE EACH SPLIT INTO A PAIR OF PARALLEL BEAMS, A PHOTOELECTRIC TRANSDUCER, A LIGHT CHOPPER POSITIONED INTERMEDIATE SAID PRISM AND PHOTOELECTRIC TRANSDUCER, MEANS FOR DIRECTING THE TWO PAIRS OF PARALLEL BEAMS FORMED BY SAID DOUBLE BEAM SPLITTING PRISM TO SAID LIGHT CHOPPER AND ONTO SAID PHOTOELECTRIC TRANSDUCER, AND AN ELECTRICAL BRIDGE HAVING THE OUTPUT OF SAID PHOTOELEC TRIC TRANSDUCER CONNECTED ACROSS ONE OF ITS DIAGONALS AND A CURRENT INDICATING MEANS CONNECTED ACROSS ITS OPPOSITE DIAGONAL FOR INDICATING PHOTOMETRIC COINCIDENCE DUE TO OPTICAL COMPENSATION OBTAINED BY MEANS OF SAID ADJUSTABLE OPTICAL COMPENSATOR, AND A RANGE SCALE MECHANICALLY LINKED TO SAID OPTICAL COMPENSATOR FOR INDICATING THE RANGE.
References Cited (Backward Citations)
US3002693A
Cited
US3143588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |