Patent US3613724A successfully refreshed from Google Patents.
US3613724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable preset pressure-actuated mechanical prime mover
Assignee: Individual
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Filing: 1969-09-08
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Granted: 1971-10-19
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Expires: 1989-09-08
Abstract
Abstract The disclosure involves a snap acting mechanical prime mover which is actuated by a preset fluid pressure and can be adjusted to be actuated by any desired preset pressure within the range of the prime mover. The prime mover will move outwardly and return when the actuating pressure reaches a preset level. Upon release of the actuating pressure the prime mover resets for another cycle.
Inventors
- 👤 Forrest L Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:43
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/22; F15B15/221; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/8593; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87853
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A snap-acting adjustable pressure-actuated prime mover comprising a cylinder, said cylinder having a side port for diverting fluid pressure, a piston mounted for reciprocation in said cylinder, a valve seat at one end of said cylinder, said valve seat having a central port extending therethrough and communicating with a source of fluid pressure, a valve on said piston engageable with said valve seat and sealing said central port against the passage of fluid, resilient means biasing said piston and said valve into sealing engagement with said valve seat to maintain said valve in engagement with said valve seat until the fluid pressure exceeds a preset point, said valve having an area exposed to the pressure substantially less than the cross-sectional area of said piston, and valve means for closing the pressure side of said central port upon movement of said piston in said cylinder away from said valve seat, and resilient means on said piston for opening said valve means upon movement of said piston in said cylinder toward said valve seat.
Claim 2
Dependent Claim
172 words
A snap-acting adjustable pressure-actuated prime mover comprising a cylinder, said cylinder having a side port for diverting fluid pressure, a piston mounted for reciprocation in said cylinder, a valve seat at one end of said cylinder, said valve seat having a central port extending therethrough and communicating with a source of fluid pressure, a valve on said piston engageable with said valve seat and sealing said central port against the passage of fluid, resilient means biasing said piston and said valve into sealing engagement with said valve seat to maintain said valve in engagement with said valve seat until the fluid pressure exceeds a preset point, said valve having an area exposed to the pressure substantially less than the cross-sectional area of said piston, and valve means for closing the pressure side of said central port upon movement of said piston in said cylinder away from said valve seat, and resilient means on said piston for opening said valve means upon movement of said piston in said cylinder toward said valve seat.
Claim 3
Dependent Claim
164 words
A snap-acting adjustable pressure-actuated prime mover comprising a cylinder, a piston mounted for reciprocation in said cylinder, a valve seat at one end of said cylinder, said valve seat having a central port extending therethrough and communicating with a source of fluid pressure, a valve on said piston engageable with said valve seat and sealing said central port against the passage of fluid, fluid pressure resilient means biasing said piston and said valve into sealing engagement with said valve seat to maintain said valve in engagement with said valve seat until the fluid pressure exceeds a preset point, said valve having an area exposed to the pressure substantially less than the cross-sectional area of said piston, and valve means for closing the pressure side of said central port upon movement of said piston in said cylinder away from said valve seat, and resilient means on said piston for opening said valve means upon movement of said piston in said cylinder toward said valve seat.
Claim 4
Dependent Claim
164 words
A snap-acting adjustable pressure-actuated prime mover comprising a cylinder, a piston mounted for reciprocation in said cylinder, a valve seat at one end of said cylinder, said valve seat having a central port extending therethrough and communicating with a source of fluid pressure, a valve on said piston engageable with said valve seat and sealing said central port against the passage of fluid, fluid pressure resilient means biasing said piston and said valve into sealing engagement with said valve seat to maintain said valve in engagement with said valve seat until the fluid pressure exceeds a preset point, said valve having an area exposed to the pressure substantially less than the cross-sectional area of said piston, and valve means for closing the pressure side of said central port upon movement of said piston in said cylinder away from said valve seat, and resilient means on said piston for opening said valve means upon movement of said piston in said cylinder toward said valve seat.
Claim 5
Dependent Claim
24 words
A snap-acting adjustable pressure-actuated prime mover as claimed in claim 2, with means for adjusting the pressure of said fluid pressure resilient biasing means.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |