US3722209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine-starting septem
Assignee: Individual
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Filing: 1971-04-09
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Granted: 1973-03-27
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Expires: 1991-04-09
Abstract
Abstract A combination relay and check valve for use with a fluid actuated engine starting system. The valve includes a housing which contains a diaphragm connected to a valve. The valve divides the housing into inlet and outlet chambers. A lubricant reservoir is contained in the housing and means are provided to inject a charge of lubricant into the chambers when the valve is opened. Excessive pressure in the outlet chamber acts on the diaphragm to close the valve and means are provided to selectively close off the source of control pressure from the diaphragm so that the valve cannot be opened when the engine is running.
Inventors
- 👤 J Kaytor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F01M5/025; F02; F02N; F02N7/00; F02N7/08; F01M2005/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
273 words
A system for starting an engine, said system comprising: a. a fluid actuated vane motor operative to engage the engine to crank the latter; b. a source of pressurized operating fluid; c. a housing having an inlet and an outlet, and providing a fluid flow path between said inlet and said outlet; d. first conduit means interconnecting said source of operating fluid and said housing inlet; e. second conduit means interconnecting said housing outlet and said vane motor; f. valve means mounted in said housing between said inlet and said outlet, said valve means being operative to open and close said flow path to fluid flowage from said operating fluid source to said vane motor; g. diaphragm means mounted in said housing for flexure therein said diaphragm means combining with a portion of said housing to provide a control chamber, and said diaphragm means being exposed to said outlet whereby said diaphragm means is operable to flex when fluid pressure in said outlet is relatively higher than fluid pressure in said control chamber; h. a source of pressurized control fluid; i. third conduit means interconnecting said control chamber and said source of pressurized control fluid whereby fluid pressure in said control chamber can be varied to flex said diaphragm means; and j. means interconnecting said diaphragm means and said valve means and operative to open said valve means in response to predetermined flexure of said diaphragm means induced by changes in fluid pressure in said control chamber, and further operative to close said valve means in response to flexure of said diaphragm means induced by said relatively higher fluid pressure in said outlet.
Claim 2
Independent Claim
273 words
A system for starting an engine, said system comprising: a. a fluid actuated vane motor operative to engage the engine to crank the latter; b. a source of pressurized operating fluid; c. a housing having an inlet and an outlet, and providing a fluid flow path between said inlet and said outlet; d. first conduit means interconnecting said source of operating fluid and said housing inlet; e. second conduit means interconnecting said housing outlet and said vane motor; f. valve means mounted in said housing between said inlet and said outlet, said valve means being operative to open and close said flow path to fluid flowage from said operating fluid source to said vane motor; g. diaphragm means mounted in said housing for flexure therein said diaphragm means combining with a portion of said housing to provide a control chamber, and said diaphragm means being exposed to said outlet whereby said diaphragm means is operable to flex when fluid pressure in said outlet is relatively higher than fluid pressure in said control chamber; h. a source of pressurized control fluid; i. third conduit means interconnecting said control chamber and said source of pressurized control fluid whereby fluid pressure in said control chamber can be varied to flex said diaphragm means; and j. means interconnecting said diaphragm means and said valve means and operative to open said valve means in response to predetermined flexure of said diaphragm means induced by changes in fluid pressure in said control chamber, and further operative to close said valve means in response to flexure of said diaphragm means induced by said relatively higher fluid pressure in said outlet.
Claim 3
Dependent Claim
78 words
The system of claim 1, further comprising a source of luBricant; lubricant injector means mounted in said housing and operably connected to said valve means; conduit means interconnecting said lubricant source and said lubricant injector, said lubricant injector being operative to inject a charge of lubricant into said flow path within said housing when said valve means is opened, whereby said lubricant charge is entrained in a stream of operating fluid and transported therein to said vane motor.
Claim 4
Dependent Claim
91 words
The system of claim 16, further comprising means operative to ignite a charge of a combustible propellant to produce a volume of pressurized combustion gages to actuate said vane motor, said igniting means being connected to said second conduit means whereby said combustion gases are free to substantially raise the fluid pressure in said housing outlet to a point above the fluid pressure in said control chamber to flex said diaphragm means to close said valve means against flowage of said combustion gases from said housing outlet to said housing inlet.
Claim 5
Dependent Claim
101 words
The system of claim 1, further comprising a second diaphragm mounted in said housing and providing a condition chamber with a portion of said housing; conduit means interconnecting said condition chamber with a fluid pressure source in said engine, said fluid pressure source generating a higher fluid pressure when said engine is running than when said engine is not running whereby fluid pressure in said condition chamber is raised when said engine is running, thereby causing said second diaphragm to be flexed in response in said higher fluid pressure to seal said control chamber from said source of pressurized control fluid.
Claim 6
Dependent Claim
57 words
The system of claim 1, further comprising a source of a lubricant; a lubricant injector mounted in said housing and operably connected to said valve means, said injector being operative to inject a charge of lubricant into said flow path when said valve means is opened; and conduit means interconnecting said lubricant source to said lubricant injector.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |