Title:
【考案の名称】圧力応動装置
Document Type and Number:
Japanese Patent JPS603533
Kind Code:
U
Abstract:
A snap-action diaphragm having an electrically conducting central portion is electrically insulated inside a case to separate it into two parts each of which is ported to a fluid, and is biased by an electrically conducting spring towards one port which serves as an electrical contact to form a switch with the diaphragm when connected to an external circuit. The snap-action characteristic of the diaphragm between two stable states when coacting with the biasing force of the spring provides a hysteresis force that can be predetermined to avoid hunting of the switch in response to anticipated alterations in pressure difference across the diaphragm. In another embodiment, the diaphragm also acts to open or shut a valve to control fluid flow, again with the benefit of hysteresis to prevent hunting during operation.
Inventors:
Mitsuyoshi Yokota
Akio Matsumoto
Akio Matsumoto
Application Number:
JP9401583U
Publication Date:
January 11, 1985
Filing Date:
June 18, 1983
Export Citation:
International Classes:
H01H5/30; H01H35/34; (IPC1-7): H01H35/34; H01H5/30
Domestic Patent References:
JP56061434B | ||||
JPS5750932B2 | 1982-10-29 |