HOSE TIP Russian patent published in 1997 - IPC

FIELD: aeronautical engineering; equipment for filling fuel tanks. SUBSTANCE: tip includes feed cylinder with standard collar connecting it to fuel tank of flying vehicle and branch pipe for connection with filling hose. Feed cylinder has valve-pusher with rod; it is brought in communication with branch pipe through actuating cylinder provided with seat and command chamber. Spring-loaded plunger engageable with actuating chamber is located inside actuating cylinder. Plunger is provided with valve engageable with seat of actuating cylinder. Command chamber is brought in communication with feed cylinder through passage available in housing of actuating cylinder, chamber in rod of valve-pusher and radial holes in valve-pusher. If pressure in feed cylinder exceeds maximum permissible magnitude , plunger will shift to position (due to pressure in command chamber) at which its valve comes to seat of actuating cylinder, thus cutting off flow of fuel. EFFECT: enhanced efficiency. 1 dwg