Patent US3166143A successfully refreshed from Google Patents.
US3166143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power steering means
Assignee: Bendix Corp
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Filing: 1962-12-17
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Granted: 1965-01-19
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin Gonter
- 👤 Robert A Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A POWER STEERING SYSTEM INCLUDING A STEERABLE WHEEL, A MOTOR MEANS INCLUDING A CYLINDER AND A PISTON IN SAID CYLINDER EFFECTIVE TO DIVIDE SAID CYLINDER INTO TWO CHAMBERS, WHICH PISTON IS OPERABLY CONNECTED TO STEER THE WHEEL, SERVO VALVE MEANS CONTROLLING THE MOTOR MEANS, AN ACTUATOR FOR SAID SERVO VALVE MEANS COMPRISING: A TORQUE MOTOR; AND ELECTRICAL MEANS FOR CONTROLLING SAID TORQUE MOTOR, WHICH ELECTRICAL MEANS INCLUDES A DIFFERENTIAL COMMAND TRANSDUCER, A DIFFERENTIAL FEEDBACK TRANSDUCER IN SERIES WITH SAID COMMAND TRANSDUCER AND OPERATIVELY CONNECTED TO SAID WHEEL, A POWER TRANSFORMER HAVING MEANS TO DIVIDE A SIGNAL SUPPLIED THERETO INTO SEPARATE PHASES, A DEMODULATOR CIRCUIT HAVING PARALLEL CONNECTED GROUPS OF DETECTOR RECTIFYING DIODES EACH OF WHICH RECEIVES A SEPARATE PHASE OF SAID SIGNAL FROM SAID POWER TRANSFORMER TO PROVIDE INTERMITTENT DIRECT CURRENT SIGNALS WHICH SINGULARLY AND COMBINED CONTROL SAID TORQUE MOTOR.
Claim 2
Dependent Claim
141 words
IN A POWER STEERING SYSTEM INCLUDING A STEERABLE WHEEL, A MOTOR MEANS INCLUDING A CYLINDER AND A PISTON IN SAID CYLINDER EFFECTIVE TO DIVIDE SAID CYLINDER INTO TWO CHAMBERS, WHICH PISTON IS OPERABLY CONNECTED TO STEER THE WHEEL, SERVO VALVE MEANS CONTROLLING THE MOTOR MEANS, AN ACTUATOR FOR SAID SERVO VALVE MEANS COMPRISING: A TORQUE MOTOR; AND ELECTRICAL MEANS FOR CONTROLLING SAID TORQUE MOTOR, WHICH ELECTRICAL MEANS INCLUDES A DIFFERENTIAL COMMAND TRANSDUCER, A DIFFERENTIAL FEEDBACK TRANSDUCER IN SERIES WITH SAID COMMAND TRANSDUCER AND OPERATIVELY CONNECTED TO SAID WHEEL, A POWER TRANSFORMER HAVING MEANS TO DIVIDE A SIGNAL SUPPLIED THERETO INTO SEPARATE PHASES, A DEMODULATOR CIRCUIT HAVING PARALLEL CONNECTED GROUPS OF DETECTOR RECTIFYING DIODES EACH OF WHICH RECEIVES A SEPARATE PHASE OF SAID SIGNAL FROM SAID POWER TRANSFORMER TO PROVIDE INTERMITTENT DIRECT CURRENT SIGNALS WHICH SINGULARLY AND COMBINED CONTROL SAID TORQUE MOTOR.
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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |