Abstract: A vapor recovery spout for a portable fuel container. The spout includes an inner sleeve attached to the container to provide a fuel flow passage through the spout. The passage has an outlet port for fuel to flow through into a tank. A sliding sleeve is mounted on the inner sleeve for sliding axial movement from an outwardly extended position to a retracted position. A radially extending annular seal is mounted on the sliding sleeve for sealing the fuel tank opening when the spout is inserted. Vapor recovery passages are provided between the inner sleeve and the sliding sleeve for displaced vapor to flow from the tank to the container. The sliding sleeve closes the fuel passage and the vapor recovery passageways when in its extended position and opens the fuel passage and the vapor recovery passageways when in its retracted position. A spring urges the sliding sleeve to its extended position.

Abstract: A no-spill, automatic-shutoff, vapor-recovery spout (12) for transmitting a volatile liquid, such as fuel, from a container (10) into a tank. The spout comprises a structure having one end connected to and sealed to said container (10), and a second end to be inserted into, and forming a tank seal (56) with, the opening (54) of said tank. The spout includes a conduit (52) which conducts said fuel from said container through said tank seal into said tank, and a second conduit (48) which conducts vapor and air, in the opposite direction, through said tank seal from said sealed tank into the container. Said tank seal is in the form of a cone-shaped collar integral with a spring biased sliding sleeve (20), with the smaller end of said cone facing said tank opening, and having a smooth, continuous, and resilient sealing surface. The cone-shaped collar fits into and seals the range of tank opening diameters normally used with off-road, internal combustion engines.

Abstract: A progressing cavity, positive displacement rotary pump assembly for fluid or semi-fluid material. The assembly includes a rotary shaft with an associated drive motor and pump components including a tubular stator with an interior helical surface and an orbital rotor within the stator operably connected to the shaft and having an exterior helical surface. The helical rotor surface has one more thread than the helical stator surface which it engages, to define sealed pumping cavities that advance axially as the rotor rotates and orbits within the stator. The rotor is coupled to the shaft by a flexible torque tube with one end connected to the shaft and the other connected to an end of the rotor to transmit driving torque to the rotor and to flex sufficiently to accommodate orbital movement of the rotor.