US3125682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically positioned light shield
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:42
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/892; G01N21/894
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN COMBINATION WITH A PINHOLE DETECTOR HAVING A FRAME PROVIDING A PATH TO BE TRAVERSED BY A STRIP OF METAL AND HAVING A LIGHT SOURCE AND A LIGHT SENSITIVE DEVICE SUBSTANTIALLY ALIGNED ON OPPOSITE SIDES OF SAID PATH; A LIGHT SHIELD TRANSVERSELY MOVABLY MOUNTED WITH RESPECT TO SAID PATH, A REVERSIBLE MOTOR CARRIED BY SAID FRAME, MEANS CONNECTING SAID MOTOR IN DRIVING RELATIONSHIP WITH SAID SHIELD TO IMPART MOVEMENT TO SAID SHIELD, AN ELECTRICAL CIRCUIT INCLUDING SAID MOTOR AND A VARIABLE SOURCE OF ENERGY, MAGNETIC FLUX PRODUCING AND SENSING MEANS CARRIED BY SAID SHIELD PROXIMATE TO AN EDGE OF SAID STRIP, AND A CIRCUIT INCLUDING SAID SENSING MEANS CONTROLLING SAID SOURCE OF ENERGY TO PRODUCE MOVEMENT OF SAID SHIELD TRANSVERSELY OF SAID PATH AS A FUNCTION OF VARIATIONS IN FLUX PRODUCED BY VARIATIONS IN THE POSITION AND STRUCTURE OF SAID STRIP.
Claim 2
Dependent Claim
141 words
IN COMBINATION WITH A PINHOLE DETECTOR HAVING A FRAME PROVIDING A PATH TO BE TRAVERSED BY A STRIP OF METAL AND HAVING A LIGHT SOURCE AND A LIGHT SENSITIVE DEVICE SUBSTANTIALLY ALIGNED ON OPPOSITE SIDES OF SAID PATH; A LIGHT SHIELD TRANSVERSELY MOVABLY MOUNTED WITH RESPECT TO SAID PATH, A REVERSIBLE MOTOR CARRIED BY SAID FRAME, MEANS CONNECTING SAID MOTOR IN DRIVING RELATIONSHIP WITH SAID SHIELD TO IMPART MOVEMENT TO SAID SHIELD, AN ELECTRICAL CIRCUIT INCLUDING SAID MOTOR AND A VARIABLE SOURCE OF ENERGY, MAGNETIC FLUX PRODUCING AND SENSING MEANS CARRIED BY SAID SHIELD PROXIMATE TO AN EDGE OF SAID STRIP, AND A CIRCUIT INCLUDING SAID SENSING MEANS CONTROLLING SAID SOURCE OF ENERGY TO PRODUCE MOVEMENT OF SAID SHIELD TRANSVERSELY OF SAID PATH AS A FUNCTION OF VARIATIONS IN FLUX PRODUCED BY VARIATIONS IN THE POSITION AND STRUCTURE OF SAID STRIP.
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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |