Title:
【発明の名称】常時閉の圧力スイッチ
Document Type and Number:
Japanese Patent JP3056820
Kind Code:
B2
Abstract:
A normally closed pressure responsive switch has upper and lower housings attached to one another with an electrically conductive snap acting disc placed therebetween. The lower housing includes a base having a recessed area in which a stationary electrical contact is mounted. The snap acting disc is placed on top of the base with a side having a convex configuration facing the stationary contact. An electrically conductive member is placed over the disc with a plurality of contact tabs engageable with the outer peripheral portion of the disc. The upper housing includes a retainer having a bore in which a pressure converter slides. Ribs formed on the bottom of the pressure converter are adapted to engage the outer peripheral portions of the disc between the contact tabs and are captured in grooves of the retainer to restrict angular movement of the pressure converter. A flexible membrane is placed on top of the retainer and pressure converter and an O-ring is received on top of the membrane to seal the pressure receiving surface of the flexible membrane to a pressure source when the switch is mounted for use.
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Inventors:
Gary A. Baker
Application Number:
JP12002991A
Publication Date:
June 26, 2000
Filing Date:
May 24, 1991
Export Citation:
Assignee:
Texas Instruments Incorporated
International Classes:
H01H5/30; H01H35/34; (IPC1-7): H01H35/34
Domestic Patent References:
| JP63167159A | ||||
| JP2148527A | ||||
| JP59114719A | ||||
| JP63239748A | ||||
| JP5346673A | ||||
| JP6166842U |
Other References:
【文献】米国特許3867594(US,A)
【文献】米国特許4948931(US,A)
【文献】米国特許4342887(US,A)
【文献】米国特許4948931(US,A)
【文献】米国特許4342887(US,A)
Attorney, Agent or Firm:
Akira Asamura (3 outside)