Patent US3076959A successfully refreshed from Google Patents.
US3076959A
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Encoder
Assignee: BALDWIN PIANO Co
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Filing: 1956-12-31
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Granted: 1963-02-05
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Pong William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:55
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/30; H03M1/308
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN ENCODER COMPRISING IN COMBINATION, A PHOTOCELL INCLUDING A PAIR OF ELECTRODES HAVING CONFRONTING PORTIONS SPACED FROM EACH OTHER AND A MASS OF PHOTOCONDUCTIVE MATERIAL DISPOSED BETWEEN THE ELECTRODES, A LIGHT SOURCE CONFRONTING THE PHOTOCONDUCTIVE MASS OF THE PHOTOCELL, AND A ROTATABLE CODE DISC MOUNTED BETWEEN THE LIGHT SOURCE AND PHOTOCELL DIRECTLY CONFRONTING THE PHOTOCELL HAVING A TRACK AT A FIXED DISTANCE FROM THE AXIS OF THE DISC INCLUDING A PLURALITY OF OPAQUE AND TRANSPARENT SECTORS ALIGNED BETWEEN THE PAIR OF ELECTRODES AND THE LIGHT SOURCE, THE LENGTH OF THE SHORTEST SECTOR BEING GREATER THAN THE DISTANCE BETWEEN THE ELECTRODES OF THE PHOTOCELL, WHEREBY NO OPTICAL ELEMENTS ARE DISPOSED BETWEEN THE CODE DISC AND PHOTOCELL THUS AVOIDING LIGHT DIFFUSION OR ATTENUATION.
Claim 2
Dependent Claim
121 words
AN ENCODER COMPRISING IN COMBINATION, A PHOTOCELL INCLUDING A PAIR OF ELECTRODES HAVING CONFRONTING PORTIONS SPACED FROM EACH OTHER AND A MASS OF PHOTOCONDUCTIVE MATERIAL DISPOSED BETWEEN THE ELECTRODES, A LIGHT SOURCE CONFRONTING THE PHOTOCONDUCTIVE MASS OF THE PHOTOCELL, AND A ROTATABLE CODE DISC MOUNTED BETWEEN THE LIGHT SOURCE AND PHOTOCELL DIRECTLY CONFRONTING THE PHOTOCELL HAVING A TRACK AT A FIXED DISTANCE FROM THE AXIS OF THE DISC INCLUDING A PLURALITY OF OPAQUE AND TRANSPARENT SECTORS ALIGNED BETWEEN THE PAIR OF ELECTRODES AND THE LIGHT SOURCE, THE LENGTH OF THE SHORTEST SECTOR BEING GREATER THAN THE DISTANCE BETWEEN THE ELECTRODES OF THE PHOTOCELL, WHEREBY NO OPTICAL ELEMENTS ARE DISPOSED BETWEEN THE CODE DISC AND PHOTOCELL THUS AVOIDING LIGHT DIFFUSION OR ATTENUATION.
References Cited (Backward Citations)
US874868A
Cited
US2426494A
Cited
US2591665A
Cited
US2582850A
Cited
US2688564A
Cited
US2590110A
Cited
US2679644A
Cited
US2685054A
Cited
US2714204A
Cited
US2861161A
Cited
US2709147A
Cited
US2755020A
Cited
US2793807A
Cited
US2932592A
Cited
US2754502A
Cited
US2728835A
Cited
US2866878A
Cited
US2936252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |