Relief valve operation detector

Details Relief valve operation detector Relief valve operation detector

1995-11-28

1997-04-15

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

137557, F16K 3700

Patent

active

056200242

ABSTRACT:
An operation member (51) is fixedly secured to a right portion of a relief member (29) inserted into a housing (20). An annular transmission member (52) externally fitted to the operation member (51) is supported by a guide groove (62) so as to be vertically movable and is urged downward by a spring (74). When the relief member (29) doesn't perform the relief operation, a detected portion (65) of the transmission member (52) is made to access a detecting portion (68) of a proximity switch (14) by the operation member (51). At the time of the relief operation, the relief member (29) and the operation member (51) are rapidly moved rightward, so that the detected portion (65) is spaced apart from the detecting portion (68) by the spring (74).

REFERENCES:
patent: 3915186 (1975-10-01), Thomas
patent: 4024712 (1977-05-01), Takeuchi
patent: 4085669 (1978-04-01), Yonezawa
patent: 4470367 (1984-09-01), Bergeron
patent: 5218994 (1993-06-01), Jeschke
patent: 5522414 (1996-06-01), Reeves

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