Abstract: A locking device for locking a cap upon the filling neck of a tank permits the protective cup-like member of the locking device to be axially offset from the tank cap to enable the locking device to accommodate itself to the restricted compartment available about the tank neck. The locking device comprises a cup-like cylindrical body member and a pair of inwardly extending collar parts, the body member and collar parts being cooperable with a lock for securing the body member and collar parts against movement. The collar parts are independently pivotally secured to the body member at one end thereof with the opposite ends of the collar parts being apertured and movable relative to the other collar part and the body member in the absence of the lock.

Abstract: An automatic thermal pressure regulator and balancing system adapted for use in an internal combustion engine having a fuel supply conduit connecting a fuel supply and a carburetor. The regulator includes a hollow housing interposed with the fluid supply conduit between the fuel supply and the carburetor. A metallic tubular member is disposed within the housing and includes an inlet disposed in fluid communication with the fuel supply conduit and a pair of outlets communicating with the interior of the housing. A heating element is mounted within the tubular member for heating the fuel flowing between the inlet and outlets of the tubular member. First, second and third co-linear chambers are formed within the housing, with the first and third chambers filled with a metallic mesh material and the second chamber filled with a catalytic agent material reactive with the fuel.