US3229588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Weston Hydraulics Ltd
•
Filing: 1963-08-05
•
Granted: 1966-01-18
•
Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Clyde F Czernek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:35
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/125; F15B9/12; F15B9/16; F15B9/17; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A SERVO SYSTEM COMPRISING AN ACTUATOR HOUSING, A FLUID OPERATED ACTUATOR RECIPROCALLY MOUNTED IN SAID HOUSING, A SOURCE OF FLUID UNDER PRESSURE, DIGITAL-ANALOG MEANS, CONDUIT MEANS PROVIDING COMMUNICATION FROM SAID SOURCE OF FLUID UNDER PRESSURE TO SAID DIGITAL-ANALOG MEANS AND FROM SAID DIGITAL-ANALOG MEANS TO SAID ACTUATOR, SAID DIGITAL-ANALOG MEANS BEING RESPONSIVE TO AN INPUT SIGNAL EFFECTIVE TO COMMUNICATE FLUID FROM SAID SOURCE OF FLUID UNDER PRESSURE TO SAID ACTUATOR TO CAUSE SAID ACTUATOR TO ASSUME A PREDETERMINED POSITION WITH RESPECT TO SAID ACTUATOR HOUSING, AND FEEDBACK MEANS CONNECTED TO SAID ACTUATOR AND TO SAID DIGITAL-ANALOG MEANS EFFECTIVE TO CORRELATE THE POSITION OF SAID ACTUATOR WITH SAID INPUT SIGNAL TO SAID DIGITAL-ANALOG MEANS.
Claim 2
Dependent Claim
113 words
A SERVO SYSTEM COMPRISING AN ACTUATOR HOUSING, A FLUID OPERATED ACTUATOR RECIPROCALLY MOUNTED IN SAID HOUSING, A SOURCE OF FLUID UNDER PRESSURE, DIGITAL-ANALOG MEANS, CONDUIT MEANS PROVIDING COMMUNICATION FROM SAID SOURCE OF FLUID UNDER PRESSURE TO SAID DIGITAL-ANALOG MEANS AND FROM SAID DIGITAL-ANALOG MEANS TO SAID ACTUATOR, SAID DIGITAL-ANALOG MEANS BEING RESPONSIVE TO AN INPUT SIGNAL EFFECTIVE TO COMMUNICATE FLUID FROM SAID SOURCE OF FLUID UNDER PRESSURE TO SAID ACTUATOR TO CAUSE SAID ACTUATOR TO ASSUME A PREDETERMINED POSITION WITH RESPECT TO SAID ACTUATOR HOUSING, AND FEEDBACK MEANS CONNECTED TO SAID ACTUATOR AND TO SAID DIGITAL-ANALOG MEANS EFFECTIVE TO CORRELATE THE POSITION OF SAID ACTUATOR WITH SAID INPUT SIGNAL TO SAID DIGITAL-ANALOG MEANS.
References Cited (Backward Citations)
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US3054388A
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |