US3558231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine zero locator
Assignee: General Electric Co
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Filing: 1967-10-03
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Granted: 1971-01-26
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Expires: 1987-10-03
Abstract
Abstract A THREE-DIMENSIONAL ZERO POSITION LOCATOR UTILIZING A LASER, MIRRORS AND A QUAD-PHOTODETECTOR. SOME OF THE MIRRORS ARE MOUNTED ON PLATFORMS MOVABLE RELATIVE TO THE LASER SOURCE AND THE QUAD-PHOTODETECTOR. THE PLATFORMS ARE MOVED UNTIL THE LASER BEAM REFLECTED FROM THE MIRRORS LIES IN THE CENTER OF THE FACE OF THE QUAD DETECTOR THEREBY ESTABLISHING A FIXED POINT WHICH CAN ALWAYS BE RELOCATED.
Inventors
- 👤 Joseph F Bakel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/401; G05B19/4015; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37275; G05B2219/41; G05B2219/41091; G05B2219/50; G05B2219/50031
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |