Fluid handling – Self-proportioning or correlating systems – Flow rate responsive
Patent
1976-04-26
1978-01-10
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Flow rate responsive
123198DB, 251 63, F16K 3112
Patent
active
040673480
ABSTRACT:
A fuel shut-off valve is described having a body with a cylindrical bore divided into first and second sections by an annular tapered shoulder. A piston is slidably positioned in the bore and inlcudes an O-ring that seats against the tapered shoulder or seat to isolate the first and second sections of the bore. One end of the piston is provided with a second O-ring sealingly engaging the bore and isolating that portion of the bore on one side of the face of the piston from the remainder of the bore. A fuel inlet passage communicates with the first bore section and an oil inlet passage communicates with a second bore section. An outlet passage communicates with the first bore section at a position axially displaced from and disposed on the opposite of the tapered seat from the first inlet passage. A mechanical override button forming a second piston extends through a second bore coaxial with the first bore and engages the face of the piston to permit manual movement of the piston against the force of a biasing spring. The valve is modifiable by means of a bypass line to allow a predetermined amount of fuel to flow between the fuel inlet and fuel outlet passages even when the oil pressure is below the minimum level in order to maintain operation of power equipment on the vehicle and allow emergency movement of the vehicle.
REFERENCES:
patent: 843391 (1907-05-01), Ferris
patent: 1339798 (1920-05-01), Thompson
patent: 2617640 (1952-11-01), Hieger
patent: 3182950 (1965-05-01), Stone
patent: 3523521 (1970-08-01), Goodwin
Jetco, Inc.
Nilson Robert G.
LandOfFree
Fuel shut-off valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel shut-off valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel shut-off valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2266665