The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1982
Filed:
Nov. 06, 1979
Lars E Trygg, S-770 13 Grangarde, SE;
Other;
Abstract
A liquid dispensing device in the form of a so-called piston valve for use with a gasoline pump comprises a valve housing having an inlet connected to the pump and an outlet; a valve for controlling the flow of liquid from the inlet to the outlet; a discharge pipe connected to said outlet; and a manually operable operating mechanism for controlling movement of said valve, which operating mechanism comprises adjustable means which can be moved between an engagement position and a free position. In order to avoid the risk of unexpected flow of gasoline when the pump is activated, the movement of the adjustable means between said free position and said engagement position is arranged to take place in dependence upon the pressure of the gasoline at the inlet, and passage means are arranged for equalizing the overpressure at the inlet when the pump is deactivated when the valve is open or if an attempt is made to open the valve when the pump is deactivated and said pressure is sufficient to move the adjustable means.