发明授权
- 专利标题： Safety device
- 专利标题（中）： 安全装置
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申请号： US376440申请日： 1982-05-10
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公开(公告)号： US4466040A公开(公告)日： 1984-08-14
- 发明人: Richard C. Barthel , Richard D. Roy
- 申请人： Richard C. Barthel , Richard D. Roy
- 申请人地址： CT Stamford
- 专利权人： The Singer Company
- 当前专利权人： The Singer Company
- 当前专利权人地址： CT Stamford
- 主分类号： H02H11/00
- IPC分类号： H02H11/00 ; H02H3/24
摘要：
A safety device for use with an electric appliance to prevent the appliance from inadvertently being started if the appliance is plugged into an outlet when the on/off switch of the appliance is in its on state. A low level sensing current is applied to the appliance before full operating power is applied to the appliance. Detection of the low level sensing current prevents application of full operating power. If no sensing current is detected, full power is applied and the detector is disabled.
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