Self closing fuel etc. dispensing gun - has articulated extension coupled to lever by pivot pin, with supporting link of gun housing

摘要

The dispensing gun has a valve tappet, spring-loaded into shut position and slid open by a control lever. This causes a roller, engaging behind a protrusion on the tappet, to be slid in the direction of the tappet axis by a component coupled to the lever. To initiate the shutting operation, the roller is slid at right angles to the tappet axis by the diaphragm of a venturi, into the tappet and out of engagement with the protrusion. A return spring acts on the component coupled to the lever. The component is a protrusion (15) coupled to the lever (3) by a pivot pin (31), and supported from the gun housing (1) by a link (26). Its return spring (29) is likewise supported from the housing.PS.