发明授权
- 专利标题: Electric motor protector
- 专利标题(中): 电动机保护器
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申请号: US552171申请日: 1975-02-24
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公开(公告)号: US4034265A公开(公告)日: 1977-07-05
- 发明人: Gideon A. DuRocher , Daniel J. DuRocher
- 申请人: Gideon A. DuRocher , Daniel J. DuRocher
- 申请人地址: IN Fort Wayne
- 专利权人: Essex International, Inc.
- 当前专利权人: Essex International, Inc.
- 当前专利权人地址: IN Fort Wayne
- 主分类号: H01H1/029
- IPC分类号: H01H1/029 ; H01H37/46 ; H02K11/00 ; H02H7/085 ; H02H3/08
摘要:
Apparatus for protecting the armature of an electric motor against excessive temperatures comprises a resiliently compressible and expansible pad in the armature circuit and composed of thermally sensitive, non-conductive material containing a plurality of conductive particles engageable with one another when the pad is in a compressed condition to establish a conductive path through the pad. The pad normally is maintained in a compressed, conductive condition by resilient force applying means which is of such resilience as to permit expansion of the pad in response to an increase in its temperature and render the pad non-conductive.