公开(公告)号：US3895560A

公开(公告)日：1975-07-22

申请号：US41468973

申请日：1973-11-12

Applicant: LEESONA CORP

Inventor： ANDERSON ERNEST DAVID

IPC: F01B31/12 ,  F15C3/04 ,  F15C4/00 ,  F01B25/26

CPC classification number: F15C3/04 ,  F01B31/12 ,  F15C4/00

Abstract: Fluid back-pressure flowing out a cylinder when being powered through a stroke is sensed by fluid logic circuits to produce a signal which indicates that piston movement is slowed or stopped. A fluid logic device with a flexible impervious diaphragm senses the back pressure to provide an output signal when the piston is not functioning properly. The detector is made more sensitive and selective by restricting a flow path for the back-pressure and operating the logic device as a pressure amplifier, responsive to a threshold back-pressure valve. The sensor is operable to produce a negative going dynamic output transition as a signal that the piston rate is not exceeding a particular threshold value.

Abstract translation: 在通过行程供电时流出气缸的流体背压由流体逻辑电路感测以产生指示活塞运动减慢或停止的信号。 具有柔性不透水隔膜的流体逻辑装置感测背压以在活塞不能正常工作时提供输出信号。 通过限制用于背压的流动路径并且响应于阈值背压阀而将逻辑装置作为压力放大器操作，检测器变得更灵敏和选择性。 传感器可操作以产生负向动态输出转变，作为活塞速率不超过特定阈值的信号。