HYDRAULIC PRESSURE RELAY Russian patent published in 1994 - IPC

FIELD: hydraulic systems. SUBSTANCE: spring-loaded plunger is mounted in bore of housing sleeve. One end of this plunger facing the supply hole of sleeve holds packing ring. Microswitch is mounted on sleeve. Stop located in housing is used for engagement with other end of plunger. Pressure member is located in housing for engagement of one of its ends located between projections of bush and button of microswitch with button. Ring is spring-loaded relative to end of sleeve bore. Ring is interference fit on plunger by inner diameter and is clearance fit in sleeve bore by outer diameter. Pressure member is made in form of flat flexible plate whose other end is mounted at clearance on plunger; plate is located between ends of sleeve and stop. EFFECT: enhanced efficiency. 2 cl, 2 dwg