Abstract: A universal filler cap assembly having a base member receiving an elastic bushing, a collar, and a cap. The base member has an annular abutting surface and a threaded stem, and the cap has a stem with mating threads. As the cap is threaded onto the base member, the bushing is compressed between the abutting surface and the collar, causing the elastic bushing to bulge in a lateral direction. This bulge presses against the internal surface of the neck of a tank, forming a fluid-tight seal. When the cap is unthreaded from the base member, the compressive force on the bushing is released and it returns to its original shape, snugly fitting around the stem of the base member.

Abstract: A portable fuel dispensing system comprises a fuel pump assembly, a conduit, and a fuel tank cap assembly. The dual line conduit permits vapor in an external fuel tank to be evacuated via a vapor line in the conduit and collected in the reservoir of the portable fuel container. The conduit and the fuel tank cap assembly comprise mating couplers having valves biased closed when disconnected from the mating coupler. In use, the fuel tank cap assembly is threaded to the external fuel tank, and the conduit coupler is connected to the cap coupler, forming a fluid-tight connection between the conduit and the fuel tank cap assembly. Thereafter, the external fuel tank is replenished by manipulating the pump assembly. The pump assembly further comprises release valves disposed in the pump body assembly to alleviate pressure differences between the reservoir of the portable fuel container and the external ambient pressure.

Abstract: A portable fuel dispensing system comprises a fuel pump assembly, a conduit, and a fuel tank cap assembly. The pump assembly comprises a handle assembly, a cylinder assembly, and pump body assembly, and the conduit is a flexible hose or tube capable of channeling fuel from the pump assembly to the external fuel tank. The conduit and the fuel tank cap assembly comprises mating couplers having valves biased closed when disconnected from the mating coupler. In use, the fuel tank cap assembly is threaded to the external fuel tank, and the conduit coupler is connected to the cap coupler, thus forming a fluid-tight connection between the conduit and the fuel tank cap assembly. Thereafter, the external fuel tank may be replenished by manipulating the pump assembly. In other embodiments, the portable fuel dispensing system has a dual line conduit permitting vapor in the external fuel tank to be evacuated via a vapor line in the conduit and collected in the reservoir of the portable fuel container.

Abstract: A vented non-spill fuel cap assembly includes a self-sealing, releasable fluid coupling and a visible fill indicator. The fuel cap assembly permits transfer of fuel from a storage vessel such as a gas canister to a fuel tank equipped with the cap assembly in a manner which prevents escape and spillage of liquid fuel and vapors. Fuel is introduced from a supply canister or other source via a hose and coupling releasably matable with the self-sealing coupling on the cap assembly, without removal of the cap assembly. The indicator visibly indicates when the tank is full.

Abstract: A vented non-spill fuel cap assembly includes a self-sealing, releasable fluid coupling and a visible fill indicator. The fuel cap assembly permits transfer of fuel from a storage vessel such as a gas canister to a fuel tank equipped with the cap assembly in a manner which prevents escape and spillage of liquid fuel and vapors. Fuel is introduced from a supply canister or other source via a hose and coupling releasably matable with the self-sealing coupling on the cap assembly, without removal of the cap assembly. The indicator visibly indicates when the tank is full.

Abstract: A vented non-spill fuel cap assembly includes a self-sealing, releasable fluid coupling and a visible fill indicator. The fuel cap assembly permits transfer of fuel from a storage vessel such as a gas canister to a fuel tank equipped with the cap assembly in a manner which prevents escape and spillage of liquid fuel and vapors. Fuel is introduced from a supply canister or other source via a hose and coupling releasably matable with the self-sealing coupling on the cap assembly, without removal of the cap assembly. The indicator visibly indicates when the tank is full.