SLIDING SHUTTER Russian patent published in 2015 - IPC F16K3/02 F16K1/50 F16K41/04 

FIELD: machine building.

SUBSTANCE: in shutter the outside thread bush engages with top section of the spindle when the separating screw enters the spline section of the spindle. The internal thread bush engages with bottom thread section of the spindle when the separating screw enters the spindle groove; on the casing cover via the sleeve with installed separating screw the bearing body with support bearings is secured, in the bearings the outside thread bush is installed. The shutter is equipped with the limiting screw installed transverse to the bottom thread section of the spindle and resting against the slider limiter during the shutter closing, with outside stroke limiter installed on the top thread section of the spindle and resting against end of the outside thread bush during the shutter closing, and with internal stroke limiter installed on the lower thread section of the spindle and resting against end of the slider during the shutter opening.

EFFECT: improved reliability of the drive design, easy control with simultaneous decreasing of weight and size, price of the shutter.

3 dwg