INDICATING ROTATING CUT-OFF CLUTCH Russian patent published in 2011 - IPC B67D7/06 

FIELD: machine building.

SUBSTANCE: clutch is designed for installation on filling tap-gun of filling stations. The clutch consists of a case with an inlet branch and axial channel and of an outlet branch. The clutch is equipped with a transparent indicator glass installed in a radial channel of the case communicated with an axial channel, with normally opened valve with a skirt, and with a stationary bush secured in the axial channel of the case. A valve seat is made on one end of the bush. The clutch includes a flexible element and a movable bush with the outlet branch. The movable bush is installed in the stationary bush, rotates around its axis and is axially fixed by means of a flexible element installed in a circular groove made on external surface of the movable bush. In the bush there is a cavity formed with an end boring on a lock nut and an end of the stationary bush. The skirt of the valve is installed in the boring made in the movable bush on the side opposite to the inlet branch. The valve is spring loaded to it.

EFFECT: raised reliability, stability of clutch characteristics and increased service life of fuel filling column.

2 cl, 1 dwg