Title: Liquid dispensing and vapor recovery system utilizing an injector and a vapor flow control valve

Abstract: A liquid dispensing and vapor recovery system in which an underground storage tank is connected to a first conduit for delivering a liquid, such as gasoline, to a vehicle gasoline tank or the like under the force of a pump located in the storage tank. A second conduit is connected to the first conduit and to the storage tank for diverting a portion of the gasoline in the first conduit back to the storage tank and an injector is located in the second conduit for forming a reduced pressure zone. A third conduit is connected to the vehicle tank and to the second conduit at the reduced pressure zone for drawing the vapors from the vehicle tank into the second conduit for passage into the storage tank. Valve means are provided which are responsive to the rate of flow of the liquid through the first conduit for regulating the flow of vapor through the third conduit.

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Inventors: Hiller, Trueman W. (Bettendorf, IA, US)
Jarr, Klaus D. (Bettendorf, IA, US)

Application Number: 534448
Filing Date: 1974-12-19
Publication_date: 1976-03-02
Assignee: Weil-McLain Company, Inc. (Dallas, TX)
Primary Class(es): 141/46 141/59, 222/318
Other Classes:
US Patent Ref:

2090734	Aug, 1973	Piquereg	222/318.
2356428	Aug, 1944	Ranney	123/198.
2401124	May, 1946	Walker et al.	141/290.
2650003	Aug, 1953	Collman	222/318.
2919834	Jan, 1960	Rugeley et al.	222/52.
3763901	Oct, 1973	Viland	141/8.
3826291	Jul, 1974	Steffens	141/290.
3863687	Feb, 1975	Alquist	141/45.

Other Refs:
Primary Examiner: Reeves, Robert B.
Assistant Examiner: Handren, Frederick R.
Attorney: Lane, Aitken, Dunner & Ziems