US3621167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston switch controlled by fluid amplifier with time delay
Assignee: Motors Liquidation Co
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Filing: 1969-12-02
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Granted: 1971-11-16
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Expires: 1989-12-02
Abstract
Abstract A fluid oscillator actuator having a bistable fluid amplifier including low- and high-speed circuits, and an actuator portion including a fluid motor responsive to the fluid amplifier is shown and described. The oscillator is assembled in a unitary structure and includes timing elements such as restrictors and capacitors for the low-speed circuit. The oscillator may be operated in a vacuum envelope and use atmospheric air for the fluid amplifier power source or it may be operated in the atmosphere using superatmospheric fluid as the power source.
Inventors
- 👤 Harold J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:29
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/24; H01H43/28; H01H35/00; H01H35/24; H01H35/38; Y; Y10; Y10S; Y10S200/00; Y10S200/05; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/2256
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
A fluid oscillator actuator structure comprising base plate means having fluid amplifier means, high-speed circuit means, and a portion of a low-speed circuit means; adapter plate means secured to said base plate means for providing a cover for said fluid amplifier means and having passages therein for providing fluid communication to and from said portion; piston housing means secured to said adapter plate means for providing a capacitor portion in fluid communication with one of said passages, a restrictor portion in fluid communication with said capacitor portion for the low-speed circuit means, and a piston housing in fluid communication with said restrictor portion and another of said passages; piston means slidably disposed in said piston housing; biasing means in said piston housing for urging said piston against said adapter plate means; cover means secured to said piston housing means having electrical switch means contacting said piston means and having an open and a closed position; a first pressure source surrounding said piston housing means and open to said cover means; and a second and higher pressure source in fluid communication with said fluid amplifier means for providing fluid thereto, whereby when said second pressure source is directed to the high-speed circuit said piston means is biased against said adapter plate and said electrical switch means is in one position aNd when said second pressure source is directed to the low-speed circuit said piston is moved against said biasing means and said electrical switch means is moved to the other position.
Claim 2
Dependent Claim
250 words
A fluid oscillator actuator structure comprising base plate means having fluid amplifier means, high-speed circuit means, and a portion of a low-speed circuit means; adapter plate means secured to said base plate means for providing a cover for said fluid amplifier means and having passages therein for providing fluid communication to and from said portion; piston housing means secured to said adapter plate means for providing a capacitor portion in fluid communication with one of said passages, a restrictor portion in fluid communication with said capacitor portion for the low-speed circuit means, and a piston housing in fluid communication with said restrictor portion and another of said passages; piston means slidably disposed in said piston housing; biasing means in said piston housing for urging said piston against said adapter plate means; cover means secured to said piston housing means having electrical switch means contacting said piston means and having an open and a closed position; a first pressure source surrounding said piston housing means and open to said cover means; and a second and higher pressure source in fluid communication with said fluid amplifier means for providing fluid thereto, whereby when said second pressure source is directed to the high-speed circuit said piston means is biased against said adapter plate and said electrical switch means is in one position aNd when said second pressure source is directed to the low-speed circuit said piston is moved against said biasing means and said electrical switch means is moved to the other position.
Claim 3
Dependent Claim
332 words
A unitary structure fluid oscillator actuator comprising base plate means having bistable fluid amplifier means with an input port, a pair of output ports and a pair of control ports, high-speed circuit means connected between one of said output ports and one of said control ports, and a portion of a low-speed circuit means connected to the other of said output ports; adapter plate means secured to said base plate means for providing a sealing cover for said fluid amplifier means and having passages therein in fluid communication with said portion of said low speed circuit means and said other control port; piston housing means sealingly secured to said adapter plate means for providing a capacitor portion of said low-speed circuit means in fluid communication with one of said passages, a restrictor portion of said low-speed circuit means in fluid communication with said capacitor portion, and a cylinder portion in fluid communication with said restrictor portion and another of said passages; piston means slidably disposed in said cylinder portion and cooperating with said cylinder portion for providing a variable capacitor for said low-speed circuit; biasing means in said cylinder portion for urging said piston against said adapter plate means; cover means secured to said piston housing means having electrical switch means contacting said piston means and having an open and a closed position; a first pressure source surrounding said piston housing means and open to said cover means; and a second and higher pressure source in fluid communication with said inlet port of said fluid amplifier means for supplying fluid thereto, whereby when said second pressure source is directed to the high-speed circuit by said fluid amplifier means said piston means is biased against said adapter plate and said electrical switch means is in one position and when said second pressure source is directed to the low-speed circuit by said fluid amplifier means said piston is moved against said biasing means and said electrical switch means is moved to the other position.
Claim 4
Dependent Claim
332 words
A unitary structure fluid oscillator actuator comprising base plate means having bistable fluid amplifier means with an input port, a pair of output ports and a pair of control ports, high-speed circuit means connected between one of said output ports and one of said control ports, and a portion of a low-speed circuit means connected to the other of said output ports; adapter plate means secured to said base plate means for providing a sealing cover for said fluid amplifier means and having passages therein in fluid communication with said portion of said low speed circuit means and said other control port; piston housing means sealingly secured to said adapter plate means for providing a capacitor portion of said low-speed circuit means in fluid communication with one of said passages, a restrictor portion of said low-speed circuit means in fluid communication with said capacitor portion, and a cylinder portion in fluid communication with said restrictor portion and another of said passages; piston means slidably disposed in said cylinder portion and cooperating with said cylinder portion for providing a variable capacitor for said low-speed circuit; biasing means in said cylinder portion for urging said piston against said adapter plate means; cover means secured to said piston housing means having electrical switch means contacting said piston means and having an open and a closed position; a first pressure source surrounding said piston housing means and open to said cover means; and a second and higher pressure source in fluid communication with said inlet port of said fluid amplifier means for supplying fluid thereto, whereby when said second pressure source is directed to the high-speed circuit by said fluid amplifier means said piston means is biased against said adapter plate and said electrical switch means is in one position and when said second pressure source is directed to the low-speed circuit by said fluid amplifier means said piston is moved against said biasing means and said electrical switch means is moved to the other position.
Claim 5
Dependent Claim
121 words
A unitary structure fluid actuator comprising fluid amplifier means; adapter plate means covering said fluid amplifier means; housing means including actuator motor means enclosing said adapter plate means; cover means secured to said housing means including actuator output means contacting said actuator motor means; case means in sealing relationship with said cover means and enclosing said housing means, said fluid amplifier means and said adapter plate means, and having vacuum connection means adapted to be connected to a vacuum source for providing a vacuum between said case means and said housing means; and atmospheric inlet means extending through said case means and being in fluid communication with said fluid amplifier means for providing a power source for said fluid amplifier means.
Claim 6
Dependent Claim
121 words
A unitary structure fluid actuator comprising fluid amplifier means; adapter plate means covering said fluid amplifier means; housing means including actuator motor means enclosing said adapter plate means; cover means secured to said housing means including actuator output means contacting said actuator motor means; case means in sealing relationship with said cover means and enclosing said housing means, said fluid amplifier means and said adapter plate means, and having vacuum connection means adapted to be connected to a vacuum source for providing a vacuum between said case means and said housing means; and atmospheric inlet means extending through said case means and being in fluid communication with said fluid amplifier means for providing a power source for said fluid amplifier means.
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |