公开(公告)号：US3317798A

公开(公告)日：1967-05-02

申请号：US54834566

申请日：1966-04-13

Applicant: IBM

Inventor： CHU RICHARD C ,  CUNAVELIS PETER J ,  JULIUS GERSTENHABER ,  SEELY JOHN H

IPC: G06F1/20

CPC classification number: G06F1/20

公开(公告)号：US3622932A

公开(公告)日：1971-11-23

申请号：US3622932D

申请日：1970-07-16

Applicant: IBM

Inventor： CUNAVELIS PETER J ,  DISTEFANO EDMUND JOSEPH ,  OSTERHOUDT DONALD L JR

IPC: H01H37/08

CPC classification number: H01H37/08

Abstract: A thermally operated switch which utilizes a bimetallic diaphragm. When an overtemperature condition inverts the diaphragm, the diaphragm pushes up a plunger by a sufficient amount to enable a spring to take over and push the plunger up farther. The spring will then hold the plunger in its up position to provide a visual indication of the existence of the overtemperature condition even after the diaphragm has cooled enough to snap back to its normal position to turn the switch back on.