US3217170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary optical servomechanism
Assignee: International Business Machines Corp
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Filing: 1962-12-31
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Granted: 1965-11-09
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Ho Bin-Lun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:51
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; B; B64; B64C; B64C13/00; B64C13/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A ROTARY SERVOMECHANISM SENSOR SYSTEM FOR PROVIDING CONTROL SIGNALS TO THE DRIVE MOTOR CONTROL CIRCUITRY OF AN ASSOCIATED BI-DIRECTIONAL SERVOMOTOR INCLUDING AN OUTPUT SHAFT COMPRISING: A CURVED REFLECTOR CONNECTED TO SAID OUTPUT SHAFT, FIRST RADIANT ENERGY RESPONSIVE MEANS MOUNTED ON SAID CURVED REFLECTOR AND ELECTRICALLY CONNECTED TO SAID DRIVE MOTOR CONTROL CIRCUITRY, SECOND RADIANT ENERGY RESPONSIVE MEANS IN OPTICAL ASSOCIATION WITH SAID CURVED REFLECTOR ELECTRICALLY CONNECTED TO SAID DRIVE MOTOR CONTROL CIRCUITRY; A PLURALITY OF SELECTIVELY ENERGIZABLE RADIANT ENERGY SOURCES CORRESPONDING TO ANGULAR POSITIONS TO WHICH SAID OUTPUT SHAFT CAN BE ROTATED IN OPTICAL ASSOCIATION WITH SAID FIRST AND SAID SECOND RADIANT ENERGY RESPONSIVE MEANS AND SAID CURVED REFLECTOR, AND A MASK ON SAID CURVED REFLECTOR OF A PATTERN SUCH THAT WHEN ONE OF SAID SELECTIVELY ENERGIZABLE RADIANT ENERGY SOURCES IS ENERGIZED THE AMOUNT OF RADIANT ENERGY REFLECTED ONTO SAID SECOND RADIANT ENERGY RESPONSIVE MEANS WILL BE INDICATIVE OF THE SHORTEST ROTATIONAL PATH TO A NEW OUTPUT SHAFT POSITION CORRESPONDING TO THE ANGULAR POSITION OF THE ENERGIZED RADIANT ENERGY SOURCE.
Claim 2
Dependent Claim
170 words
A ROTARY SERVOMECHANISM SENSOR SYSTEM FOR PROVIDING CONTROL SIGNALS TO THE DRIVE MOTOR CONTROL CIRCUITRY OF AN ASSOCIATED BI-DIRECTIONAL SERVOMOTOR INCLUDING AN OUTPUT SHAFT COMPRISING: A CURVED REFLECTOR CONNECTED TO SAID OUTPUT SHAFT, FIRST RADIANT ENERGY RESPONSIVE MEANS MOUNTED ON SAID CURVED REFLECTOR AND ELECTRICALLY CONNECTED TO SAID DRIVE MOTOR CONTROL CIRCUITRY, SECOND RADIANT ENERGY RESPONSIVE MEANS IN OPTICAL ASSOCIATION WITH SAID CURVED REFLECTOR ELECTRICALLY CONNECTED TO SAID DRIVE MOTOR CONTROL CIRCUITRY; A PLURALITY OF SELECTIVELY ENERGIZABLE RADIANT ENERGY SOURCES CORRESPONDING TO ANGULAR POSITIONS TO WHICH SAID OUTPUT SHAFT CAN BE ROTATED IN OPTICAL ASSOCIATION WITH SAID FIRST AND SAID SECOND RADIANT ENERGY RESPONSIVE MEANS AND SAID CURVED REFLECTOR, AND A MASK ON SAID CURVED REFLECTOR OF A PATTERN SUCH THAT WHEN ONE OF SAID SELECTIVELY ENERGIZABLE RADIANT ENERGY SOURCES IS ENERGIZED THE AMOUNT OF RADIANT ENERGY REFLECTED ONTO SAID SECOND RADIANT ENERGY RESPONSIVE MEANS WILL BE INDICATIVE OF THE SHORTEST ROTATIONAL PATH TO A NEW OUTPUT SHAFT POSITION CORRESPONDING TO THE ANGULAR POSITION OF THE ENERGIZED RADIANT ENERGY SOURCE.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |