Patent US3578006A successfully refreshed from Google Patents.
US3578006A
Expired / Lapsed
US
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Acceleration and pressure responsive fluid valve
Assignee: Individual
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Filing: 1969-04-25
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Granted: 1971-05-11
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Expires: 1989-04-25
Abstract
Abstract An acceleration and pressure responsive fluid valve for a conduit having a fluid blocking body held in place in the conduit by ball detents. The balls are held in locking position by a spring loaded piston which under high fluid pressure, moves against the spring out of ball locking position to allow the balls to pop into the body out of locking position which frees the body to be pushed out of blocking position in the conduit. The fluid which operates the piston enters the body through fluid spiracles which are closed during acceleration by an inertia operated valve, but opened again by a biasing spring when the acceleration decreases below a given value, thereby permitting fluid to flow through the spiracles to operate the piston and unlock the valve.
Inventors
- 👤 Andrew J Betz Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:35
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/7722; Y10T137/7734
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
A valve assembly comprising: a casing having at least one aperture formed in the sidewall thereof, detent means positioned in said aperture, first slidable means disposed in said casing normally holding said detent means projecting beyond said casing and movable in response to fluid pressure of a predetermined magnitude to permit said detent means to recede into said casing, at least one passage formed in said casing for providing fluid communication between said slidable means and the exterior of said casing, second slidable means disposed in said casing for interrupting said fluid communication in response to an inertia force of a predetermined magnitude, and biasing means acting on said second slidable means in opposition to said inertia force to reestablish said fluid communication when said inertia force has decreased below said predetermined magnitude.
Claim 2
Dependent Claim
133 words
A valve assembly comprising: a casing having at least one aperture formed in the sidewall thereof, detent means positioned in said aperture, first slidable means disposed in said casing normally holding said detent means projecting beyond said casing and movable in response to fluid pressure of a predetermined magnitude to permit said detent means to recede into said casing, at least one passage formed in said casing for providing fluid communication between said slidable means and the exterior of said casing, second slidable means disposed in said casing for interrupting said fluid communication in response to an inertia force of a predetermined magnitude, and biasing means acting on said second slidable means in opposition to said inertia force to reestablish said fluid communication when said inertia force has decreased below said predetermined magnitude.
Claim 3
Dependent Claim
44 words
The valve of claim 1 wherein: said first slidable means comprises a first piston slidably mounted in said casing and movable in response to said fluid pressure, and further comprising resilient means disposed to act on said first piston in opposition to said movement.
Claim 4
Dependent Claim
44 words
The valve of claim 2 wherein said piston comprises a forward and a rearward portion separated by a central reduced portion defining therebetween an annular space of a size sufficient to receive said detent means upon recession of said detent means into said casing.
Claim 5
Dependent Claim
34 words
The valve of claim 3 wherein said rearward portion includes a reduced diameter portion adjacent said central reduced portion and which provides a bearing surface which holds said detent means protruding beyond said casing.
Claim 6
Dependent Claim
60 words
The valve of claim 1 wherein: said fluid passage comprises means defining a central bore communicating with said first slidable means means defining at least one fluid spiracle communicating between the exterior of said casing and said central bore; and said second slidable means comprises means movable in said bore between a spiracle closing position and a spiracle opening position.
Claim 7
Dependent Claim
96 words
The valve of claim 5 wherein said movable means comprises a second piston slidably mounted in said bore and having an inertia mass operatively associated therewith, and said biasing means acts on said second piston to bias said second piston toward said spiracle opening position, whereby under acceleration said inertia mass will act against said biasing means to move said second piston to said spiracle closing position, and when the acceleration has decreased to said predetermined magnitude said biasing means will act on said second piston to move said second piston to said spiracle opening position.
Claim 8
Dependent Claim
93 words
The valve of claim 6 wherein said second piston has at least two peripheral sealing means located thereon such that in said spiracle closing position one of said sealing means will be positioned between said spiracle and said first slidable means and the other sealing means will be located between said spiracle and the top of said second piston, whereby with said second piston in said spiracle closing position, fluid pressure will be prevented from acting on said first slidable means and also from altering the resultant force acting on said second piston.
Claim 9
Dependent Claim
44 words
The valve of claim 5 wherein: said first slidable means comprises a first piston slidably mounted in said casing and movable in response to said fluid pressure, and further comprising resilient means disposed to act on said first piston in opposition to said movement.
Claim 10
Dependent Claim
44 words
The valve of claim 6 wherein: said first slidable means comprises a first piston slidably mounted in said casing and movable in response to said fluid pressure, and further comprising resilient means disposed to act on said first piston in opposition to said movement.
Claim 11
Dependent Claim
45 words
The valve of claim 9 wherein: said first piston comprises a forward and a rearward portion separated by a central reduced portion defining therebetween an annular space of a size sufficient to receive said detent means upon recession of said detent means into said casing.
References Cited (Backward Citations)
US1669534A
Cited
US2217880A
Cited
US2453812A
Cited
US2772686A
Cited
US3078722A
Cited
US3105506A
Cited
US3263698A
Cited
US3317250A
Cited
US3384111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |