US3796240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed fueling device with automatic cutoff
Assignee: Individual
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Filing: 1971-11-30
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Granted: 1974-03-12
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Expires: 1991-11-30
Abstract
Abstract A fuel tank inlet pipe including an inlet end and an outlet end opening downwardly into an associated tank. The inlet end of the pipe includes structure by which the outlet nozzle of a fuel discharge line may be coupled to the inlet pipe in fluid-tight sealed engagement therewith and also a fuel flow control valve for controlling the flow of fuel into the inlet pipe and operable, upon actuation of the valve, to move a valve member into closed position with a force generated by the pressure of the fuel delivered to the discharge nozzle. The valve includes a bleed port rendering the pressure of fuel delivered to the nozzle inoperative to move the valve member to the closed position and the bleed port itself has a valve member operatively associated therewith for closing the bleed port and rendering the line pressure of fuel delivered to the nozzle capable of moving the valve member of the control valve to its closed position in response to the tank and/or the inlet pipe being filled.
Inventors
- 👤 W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:15
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/42; B67D7/44; B67D7/46; B67D7/48
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
In combination, a liquid conduit including an inlet end and an outlet end portion, said inlet end including inlet end structure defining a downstream facing annular valve seat, a bellows member disposed in said conduit downstream from said seat and extending longitudinally thereof, the first end of said bellows member remote from said seat being stationarily mounted in said conduit and including a first bleed opening therein, the second end of said bellows member adjacent said seat including annular upstream facing end surface means sealingly engageable with said seat and a second bleed opening within the confines of said annular end surface means, said bellows member being normally biased toward an expanded position with said end surface means sealingly engaged with said seat and also being lengthwise compressible upon the impingement of fluid under pressure on said second end to force said second end from said seat, and means responsive to backflow of fluid in said conduit to close said first bleed opening, whereby the pressure of incoming fluid may be allowed to build-up in said bellows member through said second bleed opening to expand the bellows member and thereby cause said end surface means to seal against said seat.
Claim 2
Dependent Claim
200 words
In combination, a liquid conduit including an inlet end and an outlet end portion, said inlet end including inlet end structure defining a downstream facing annular valve seat, a bellows member disposed in said conduit downstream from said seat and extending longitudinally thereof, the first end of said bellows member remote from said seat being stationarily mounted in said conduit and including a first bleed opening therein, the second end of said bellows member adjacent said seat including annular upstream facing end surface means sealingly engageable with said seat and a second bleed opening within the confines of said annular end surface means, said bellows member being normally biased toward an expanded position with said end surface means sealingly engaged with said seat and also being lengthwise compressible upon the impingement of fluid under pressure on said second end to force said second end from said seat, and means responsive to backflow of fluid in said conduit to close said first bleed opening, whereby the pressure of incoming fluid may be allowed to build-up in said bellows member through said second bleed opening to expand the bellows member and thereby cause said end surface means to seal against said seat.
Claim 3
Dependent Claim
76 words
The combination of claim 1 wherein said inlet end structure also defining an upstream facing annular seal surface, a discharge nozzle including an inlet and an outlet, said nozzle outlet including annular seal structure sealingly engageable with said annular seal surface, said nozzle and said inlet end structure including coacting support means operative to removably suppOrt said nozzle from said inlet end of said conduit with said seal structure sealingly engaged with said annular seal surface.
Claim 4
Dependent Claim
33 words
The combination of claim 2 wherein said nozzle includes a control valve for controlling the flow of fluid therethrough, said control valve including means for terminating the flow of fluid through said nozzle.
Claim 5
Dependent Claim
99 words
The combination of claim 1 wherein said means responsive to a backflow of fluid in said conduit includes a valve member supported in said conduit for guided limited movement in upstream and downstream directions, said valve member, when in its upstream limit position, closing said first bleed opening, and valve actuating means in the form of buoyant abutment means mounted in said conduit for guided movement in upstream and downstream directions, said buoyant abutment means being engageable with said valve member to urge the latter in said upstream direction in response to a backflow of fluid in said conduit.
Claim 6
Dependent Claim
110 words
The combination of claim 1 including a fluid delivery line having an outlet nozzle, said nozzle and said inlet end structure including coacting means operative to releasably secure said nozzle to said inlet end structure in fluid-tight communication therewith, said means responsive to backflow of fluid in said conduit including float means operatively associated with said outlet end portion of said conduit and actuator means operable by said float means for closing said first bleed opening in response to a tank with which said outlet end portion is associated being filled a predetermined amount, said outlet end portion opening into a tank, said float means being mounted in said tank.
Claim 7
Dependent Claim
43 words
The combination of claim 5 wherein said outlet end portion extends downwardly and said float means is guidingly supported therein for movement therealong and may be buoyed upwardly in said outlet end portion in response to fluid rising in said outlet end portion.
Claim 8
Dependent Claim
46 words
The combination of claim 6 wherein said outlet end portion includes guide means for said float means defining a shield against at least all but a small percentage of fluid flowing downwardly through said outlet end portion from said inlet end acting upon said float 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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |