US3239735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data converting servo system
Assignee: International Business Machines Corp
•
Filing: 1961-10-13
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Granted: 1966-03-08
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Expires: 1981-10-13
Abstract
No abstract record available.
Inventors
- 👤 Jerry W Raider
- 👤 George W Scott
- 👤 Robert A Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:58
CPC Classifications
H; H03; H03M; H03M1/00; G; G05; G05D; G05D3/00; G05D3/12; G05D3/20; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A SERVO SYSTEM FOR POSITIONING A CONTROLLED MEMBER IN ACCORDANCE WITH AN INPUT SIGNAL COMPRISING, IN COMBINATION: A MOTOR HAVING AN ARMATURE WINDING; A CONTROLLED MEMBER DIRECTLY COUPLED WITH SAID MOTOR; MEANS PROVIDING AN INPUT SIGNAL REPRESENTING THE DESIRED POSITION OF SAID CONTROLLED MEMBER; MEANS PROVIDING A FEEDBACK SIGNAL REPRESENTING THE ACTUAL POSITION OF SAID CONTROLLED MEMBER; COMPARATOR MEANS FOR COMPARING SAID INPUT AND FEEDBACK SIGNALS; SAID COMPARATOR MEANS PROVIDING DIFFERENCE SIGNALS REPRESENTING THE DIRECTION SAID MOTOR IS TO BE ROTATED AND INDICATING A NULL CONDITION WHEN SAID INPUT AND FEEDBACK SIGNALS ARE THE SAME; MEANS CONTROLLING THE ENERGIZATION OF SAID ARMATURE WINDING OF SAID MOTOR IN RESPONSE OF SAID DIFFERENCE SIGNALS; SAID MOTOR BEING DE-ENERGIZED BY SAID MEANS CON-
Claim 2
Dependent Claim
120 words
A SERVO SYSTEM FOR POSITIONING A CONTROLLED MEMBER IN ACCORDANCE WITH AN INPUT SIGNAL COMPRISING, IN COMBINATION: A MOTOR HAVING AN ARMATURE WINDING; A CONTROLLED MEMBER DIRECTLY COUPLED WITH SAID MOTOR; MEANS PROVIDING AN INPUT SIGNAL REPRESENTING THE DESIRED POSITION OF SAID CONTROLLED MEMBER; MEANS PROVIDING A FEEDBACK SIGNAL REPRESENTING THE ACTUAL POSITION OF SAID CONTROLLED MEMBER; COMPARATOR MEANS FOR COMPARING SAID INPUT AND FEEDBACK SIGNALS; SAID COMPARATOR MEANS PROVIDING DIFFERENCE SIGNALS REPRESENTING THE DIRECTION SAID MOTOR IS TO BE ROTATED AND INDICATING A NULL CONDITION WHEN SAID INPUT AND FEEDBACK SIGNALS ARE THE SAME; MEANS CONTROLLING THE ENERGIZATION OF SAID ARMATURE WINDING OF SAID MOTOR IN RESPONSE OF SAID DIFFERENCE SIGNALS; SAID MOTOR BEING DE-ENERGIZED BY SAID MEANS CON-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |