Husky Corporation

Timothy G Schroeder

Arthur C Fink

Darrell P Vilmer

A safety interlock nozzle for use with a safety interlock mechanism is disclosed which comprises a base having an interlock contact surface at a first end and alternating tabs at a second end, a body having alternating tabs at a first end that mate with the alternating tabs of the base, a channel within the body positioned at a second end, a ring clamp for connecting the tabs of the base to the tabs of the body, a splash guard having a first end for contacting with a filler neck housing and a second end having a slot formed therein, the second end capable of fitting within the channel of the second end of the body, and a spring for being captured within the channel in the body and the slot within the splash guard, the spring for connecting the splash guard to the body.

Safety interlock nozzle

Nozzle splash guard design

A carbon canister as utilized relative to underground fuel storage tank vapor recovery, including for the capture and purging of hydrocarbon vapors as air is introduced into and released from an underground storage tank, and wherein, in one form intended primarily for use in Stage II Vapor Recovery systems, the carbon canister includes a valve activated by weight of saturated carbon and wherein, in another form intended primarily for use in Stage I Vapor Recovery systems, the carbon canister is a free breathing carbon canister with a surge protection device.

Carbon canister for vapor recovery systems

A carbon canister with a valve activated by the weight of nearly saturated or saturated carbon communicates with piping from an underground tank. The invention includes carbon within a casing inside a canister, a weight actuated valve, and piping in communication with the atmosphere. When an ORVR vehicle refuels, the pressure lowers in the tank that draws air into the canister. After refueling, the tank remains subject to conditions that generate hydrocarbon vapors. Those vapors then return to the canister and adhere to the surface of the carbon. The carbon, heavier with hydrocarbons, lowers the canister and closes the weight actuated valve. Closing the valve returns pressure control to an external pressure vacuum relief valve. The next refueling draws in atmospheric air to purge the hydrocarbons in the canister and thus lighten it. A secondary purge valve also removes hydrocarbons from the canister. Once the carbon lightens, the inlet valve opens and the vapors return to the canister for adsorption. This cycle regenerates the carbon.

Growing community of inventors

St. Louis, MO, United States of America

Timothy G Schroeder