US3124041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo amplifier
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:39
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN ELECTRO-HYDRAULIC SERVO SYSTEM COMPRISING A COMMON INPUT CONTROL MEMBER AND A COMMON OUTPUT MEMBER, AT LEAST THREE INDEPENDENT CHANNELS FOR THE TRANSMISSION OF SIGNALS FROM THE INPUT CONTROL MEMBER TO THE OUTPUT MEMBER, EACH CHANNEL COMPRISING A FIRST MOTOR ADAPTED TO BE CONTROLLED BY CONTROL SIGNALS DEVELOPED BY MOVEMENT OF THE INPUT CONTROL MEMBER, A HYDRAULIC SERVO MOTOR MECHANICALLY COUPLED TO DRIVE THE SAID COMMON OUTPUT MEMBER, A HYDRAULIC SERVO VALVE OPERATED BY SAID FIRST MOTOR FOR CONTROLLING THE FLOW OF HYDRAULIC FLUID TO SAID SERVO MOTOR, MEANS IN EACH CHANNEL TO GENERATE A VALVE SIGNAL REPRESENTATIVE OF THE POSITION OF THE SERVO VALVE, AND FEEDBACK MEANS FOR EACH CHANNEL AND INCLUDING AN INTEGRATOR CONNECTED TO INTEGRATE THE VALVE-POSITION SIGNAL TO GENERATE A FEEDBACK SIGNAL REPRESENTATIVE OF THE FIRST TIME INTEGRAL OF THE VALVE-POSITION SIGNAL, AND MEANS TO FEED BACK SAID FEEDBACK SIGNAL TO SAID CHANNEL.
Claim 2
Dependent Claim
147 words
AN ELECTRO-HYDRAULIC SERVO SYSTEM COMPRISING A COMMON INPUT CONTROL MEMBER AND A COMMON OUTPUT MEMBER, AT LEAST THREE INDEPENDENT CHANNELS FOR THE TRANSMISSION OF SIGNALS FROM THE INPUT CONTROL MEMBER TO THE OUTPUT MEMBER, EACH CHANNEL COMPRISING A FIRST MOTOR ADAPTED TO BE CONTROLLED BY CONTROL SIGNALS DEVELOPED BY MOVEMENT OF THE INPUT CONTROL MEMBER, A HYDRAULIC SERVO MOTOR MECHANICALLY COUPLED TO DRIVE THE SAID COMMON OUTPUT MEMBER, A HYDRAULIC SERVO VALVE OPERATED BY SAID FIRST MOTOR FOR CONTROLLING THE FLOW OF HYDRAULIC FLUID TO SAID SERVO MOTOR, MEANS IN EACH CHANNEL TO GENERATE A VALVE SIGNAL REPRESENTATIVE OF THE POSITION OF THE SERVO VALVE, AND FEEDBACK MEANS FOR EACH CHANNEL AND INCLUDING AN INTEGRATOR CONNECTED TO INTEGRATE THE VALVE-POSITION SIGNAL TO GENERATE A FEEDBACK SIGNAL REPRESENTATIVE OF THE FIRST TIME INTEGRAL OF THE VALVE-POSITION SIGNAL, AND MEANS TO FEED BACK SAID FEEDBACK SIGNAL TO SAID CHANNEL.
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |