Fuel transfer valve

Claim 1

A dual fuel tank transfer valve system for selectively regulating fuel flow between a main tank and an auxiliary tank of a vehicle fuel supply system for a fuel burning engine comprising a pair of tubular valve bodies each including multiple fittings defining plural flow paths through said body, a push rod located within each body, a single yoke means coupled to each push rod for simultaneously reciprocating said push rods in the same direction during inboard and outboard movements and through a valve closed position intermediate first and second control positions, electric motor driven gear means operatively connected to said yoke means, means defining valve seats in each of said valve bodies, a pair of valve sealing elements selectively positioned with respect to said valve seats, means for carrying each of said sealing elements including a pair of sleeve inserts slidably supported on each of said push rods and a ring fixedly secured to each of said push rods, spring means to produce selective opposite engagement of said inserts with said ring when said push rods are in said first and second control positions, said ring on the push rod being spaced from said inserts when in the valve closed position whereby all of said sealing elements are spring biased closed against said valve seats, said ring being positioned on the inboard and outboard movements to engage one of the inserts to carry a previously seat engaged sealing element away from its seat while a push rod slides through a seated other one of the sealing elements thereon and wherein the ring and push rod will thereafter position a previously opened sealing element to a closed position to complete a fuel flow path between one or the other of the tanks and the fuel supply system, both of the sealing elements remaining closed at the valve closed position whereby fuel flow will be blocked between either one of the tanks and the carburetor to prevent tank overflow during a fuel transfer operation.