Patent US3351830A successfully refreshed from Google Patents.
US3351830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo system including armature and field control of plural motors connected in torque opposition
Assignee: Individual
•
Filing: 1965-02-26
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Granted: 1967-11-07
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 George C Samson
- 👤 Endlich John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:26
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A SERVO SYSTEM FOR CONTROLLING OUTPUT TORQUE COMPRISING: A FIRST MOTOR DEVELOPING TORQUE IN ONE DIRECTION; A SECOND MOTOR DEVELOPING TORQUE IN ANOTHER DIRECTION; MEANS FOR MEASURING THE COMPOSITE ROTATIONAL OUTPUT OF THE TWO MOTORS AND GENERATING AN ERROR SIGNAL INDICATIVE OF THIS MOVEMENT; CIRCUIT CONTROL MEANS ACTIVATED IN RESPONSE TO THE ERROR SIGNAL; FIRST AMPLIFIER MEANS FOR APPLYING PART OF THE OUTPUT OF THE CONTROL MEANS THROUGH THE ARMATURES OF THE FIRST AND SECOND MOTORS; AND A SECOND AMPLIFIER MEANS FOR APPLYING ANOTHER PART OF THE OUTPUT OF THE CONTROL MEANS TO THE FIELD OF THE FIRST
Claim 2
Dependent Claim
98 words
A SERVO SYSTEM FOR CONTROLLING OUTPUT TORQUE COMPRISING: A FIRST MOTOR DEVELOPING TORQUE IN ONE DIRECTION; A SECOND MOTOR DEVELOPING TORQUE IN ANOTHER DIRECTION; MEANS FOR MEASURING THE COMPOSITE ROTATIONAL OUTPUT OF THE TWO MOTORS AND GENERATING AN ERROR SIGNAL INDICATIVE OF THIS MOVEMENT; CIRCUIT CONTROL MEANS ACTIVATED IN RESPONSE TO THE ERROR SIGNAL; FIRST AMPLIFIER MEANS FOR APPLYING PART OF THE OUTPUT OF THE CONTROL MEANS THROUGH THE ARMATURES OF THE FIRST AND SECOND MOTORS; AND A SECOND AMPLIFIER MEANS FOR APPLYING ANOTHER PART OF THE OUTPUT OF THE CONTROL MEANS TO THE FIELD OF THE FIRST
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |