US3706263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic steering control
Assignee: United States Department of the Navy
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Filing: 1970-09-25
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Granted: 1972-12-19
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Expires: 1990-09-25
Abstract
Abstract A fluidic control apparatus for controlling the displacement and speed of a ship''s rudder (or diving planes) from a remotely located control wherein the amount and the speed of the displacement of the rudder is proportional to the input control.
Inventors
- 👤 Guy L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/001; B; B63; B63H; B63H25/00; B63H25/06; B63H25/08; B63H25/14; B63H25/26; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2065; Y10T137/2071
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
A fluid control system for controlling the amount and speed of the displacement of a ship''s control surface, comprising: an input means; a first fluidic potentiometer connected to said input means to generate a first pressure differential proportional to the displacement of said input means; an actuator connected to the ship''s control surface; a second fluidic potentiometer connected to said actuator to generate a second pressure differential proportional to actuator displacement; a spool valve connected to the actuator to displace the actuator; a third fluidic potentiometer connected to said spool valve to generate a third pressure differential proportional to spool displacement; manifold means interconnecting said first, second, and third fluidic potentiometers to algebraically sum said first, second, and third pressure differentials; and a fluidic amplifier whose input is connected to said manifold means to receive said algebraically summed first, second, and third pressure differentials, the output of said fluidic amplifier being connected to the ends of said spool valve to displace the spool accordingly.
Claim 2
Dependent Claim
164 words
A fluid control system for controlling the amount and speed of the displacement of a ship''s control surface, comprising: an input means; a first fluidic potentiometer connected to said input means to generate a first pressure differential proportional to the displacement of said input means; an actuator connected to the ship''s control surface; a second fluidic potentiometer connected to said actuator to generate a second pressure differential proportional to actuator displacement; a spool valve connected to the actuator to displace the actuator; a third fluidic potentiometer connected to said spool valve to generate a third pressure differential proportional to spool displacement; manifold means interconnecting said first, second, and third fluidic potentiometers to algebraically sum said first, second, and third pressure differentials; and a fluidic amplifier whose input is connected to said manifold means to receive said algebraically summed first, second, and third pressure differentials, the output of said fluidic amplifier being connected to the ends of said spool valve to displace the spool accordingly.
Claim 3
Dependent Claim
27 words
A fluid control system as in claim 1 further including a variable orifice connected between said third fluidic potentiometer and said manifold means to vary system response.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |