US3120787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual flight control system
Assignee: Individual
•
Filing: 1963-01-11
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Granted: 1964-02-11
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 Vernon R Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0077
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A DUAL CHANNEL HYDRAULIC PRESSURE ACTUATED CONTROL SYSTEM, A TANDEM ACTUATOR HAVING SEPARATE PRESSURE CHAMBERS, AND PRESSURE ACTUATED MEANS IN SAID CHAMBERS CONNECTED FOR SIMULTANEOUS CONTROL MOVEMENTS OF A COMMON CONTROL MEMBER, SEPARATE HYDRAULIC PRESSURE SUPPLY CONDUIT MEANS IN EACH CHANNEL, SEPARATE SERVO-MOTOR MEANS IN EACH CHANNEL CONNECTED TO THE PRESSURE SUPPLY CONDUIT MEANS IN THAT CHANNEL FOR CONTROLLING THE MOVEMENT OF SAID PRESSURE ACTUATED MEANS IN THAT CHANNEL, SOLENOID ACTUATOR MEANS IN EACH CHANNEL, MEANS CONNECTED BETWEEN SAID PRESSURE SUPPLY CONDUITS RESPONSIVE TO FAILURE OF ONE OF SAID SERVO MOTOR MEANS, FOR BYPASSING PRESSURE FLUID IN THE PRESSURE CHAMBER CONTROLLED BY SAID FAILED SERVO-MOTOR MEANS TO PREVENT HYDRAULIC FLUID LOCK THEREIN, AND SIMULTANEOUSLY CONNECTING SAID HYDRAULIC PRESSURE SUPPLY CONDUIT IN THAT CHANNEL TO THE HYDRAULIC PRESSURE SUPPLY CONDUIT IN THE OTHER CHANNEL.
Claim 2
Dependent Claim
134 words
IN A DUAL CHANNEL HYDRAULIC PRESSURE ACTUATED CONTROL SYSTEM, A TANDEM ACTUATOR HAVING SEPARATE PRESSURE CHAMBERS, AND PRESSURE ACTUATED MEANS IN SAID CHAMBERS CONNECTED FOR SIMULTANEOUS CONTROL MOVEMENTS OF A COMMON CONTROL MEMBER, SEPARATE HYDRAULIC PRESSURE SUPPLY CONDUIT MEANS IN EACH CHANNEL, SEPARATE SERVO-MOTOR MEANS IN EACH CHANNEL CONNECTED TO THE PRESSURE SUPPLY CONDUIT MEANS IN THAT CHANNEL FOR CONTROLLING THE MOVEMENT OF SAID PRESSURE ACTUATED MEANS IN THAT CHANNEL, SOLENOID ACTUATOR MEANS IN EACH CHANNEL, MEANS CONNECTED BETWEEN SAID PRESSURE SUPPLY CONDUITS RESPONSIVE TO FAILURE OF ONE OF SAID SERVO MOTOR MEANS, FOR BYPASSING PRESSURE FLUID IN THE PRESSURE CHAMBER CONTROLLED BY SAID FAILED SERVO-MOTOR MEANS TO PREVENT HYDRAULIC FLUID LOCK THEREIN, AND SIMULTANEOUSLY CONNECTING SAID HYDRAULIC PRESSURE SUPPLY CONDUIT IN THAT CHANNEL TO THE HYDRAULIC PRESSURE SUPPLY CONDUIT IN THE OTHER 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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |