US3782410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1972-12-26
•
Granted: 1974-01-01
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Expires: 1992-12-26
Abstract
Abstract A check valve for preventing outflow of fuel from a broken or disconnected fuel line of an engine has coacting valve elements mounted on a diaphragm which normally is subjected to the negative intake pressures of the engine fuel pump. A relatively light spring tends to hold the valve elements in passage-closed position. The valve opens automatically when suction from the engine fuel pump moves the diaphragm, causing one of the valve elements to abut an adjustable stop member, whereafter continued movement of the diaphragm opens the valve passage. Such diaphragm movement is opposed by a second spring. Adjustment of the stop member enables the valve passage to be opened at a selected point in the range of diaphragm movement.
Inventors
- 👤 T Steuby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/085; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7783; Y10T137/7834
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A valve assembly comprising: a. A hollow body member having spaced fluid inlet and outlet passages, b. a diaphragm separating the interior of said body member into inlet and outlet chambers communicating respectively with said inlet and outlet passages, c. coaCting valve elements mounted on said diaphragm for movement therewith, said elements defining a transfer passage through the diaphragm, and including means for controlling the flow of fluid through said transfer passage, d. a first spring means biasing said elements toward positions to close the transfer passage, e. abutment means in the path of one of said valve elements for arresting movement thereof, and f. a second spring means between the body member and diaphragm to oppose movement thereof induced by fluid pressure in said inlet chamber.
Claim 2
Dependent Claim
127 words
A valve assembly comprising: a. A hollow body member having spaced fluid inlet and outlet passages, b. a diaphragm separating the interior of said body member into inlet and outlet chambers communicating respectively with said inlet and outlet passages, c. coaCting valve elements mounted on said diaphragm for movement therewith, said elements defining a transfer passage through the diaphragm, and including means for controlling the flow of fluid through said transfer passage, d. a first spring means biasing said elements toward positions to close the transfer passage, e. abutment means in the path of one of said valve elements for arresting movement thereof, and f. a second spring means between the body member and diaphragm to oppose movement thereof induced by fluid pressure in said inlet chamber.
Claim 3
Dependent Claim
50 words
The valve assembly defined in claim 1 wherein said coacting valve elements include a tubular first element providing an annular valve seat at one end, and a second element extending through the said first element and having a poppet head engageable with said valve seat of the said first element.
Claim 4
Dependent Claim
38 words
The valve assembly defined in claim 2 wherein: the second valve element has a tubular stem portion slidable longitudinally within the said first element, the stem of said second element having a wall opening below its poppet head.
Claim 5
Dependent Claim
32 words
The valve assembly defined in claim 3 wherein: said first and second spring means impose forces on said first valve element in a direction opposing movement thereof to open the transfer passage.
Claim 6
Dependent Claim
23 words
The valve assembly defined in claim 4 wherein: the said second spring has greater resistance to deflection than does the said first spring.
Claim 7
Dependent Claim
22 words
The valve assembly defined in claim 4 wherein: said stop shoulder is adjustable in a direction toward and from said valve elements.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |