发明名称 Elevator safety device with foreign matter detection using a light beam
摘要 There is provided an elevator safety device that can prevent a light beam from being looked into. The elevator safety device according to the present invention includes light emitting means for emitting a light beam crossing an entrance; light receiving means for detecting the light beam emitted from the light emitting means; foreign matter detection means for generating a foreign matter detection signal when detection of the light beam by the light receiving means is interrupted; and control means. The control means causes the light emitting means to stop an emission in a fully opened state of car doors, and causes the light emitting means to start the emission at a start of or during a closing operation of the car doors.
申请公布号 US8672098(B2) 申请公布日期 2014.03.18
申请号 US200913125119 申请日期 2009.09.18
申请人 KASHIWAKURA HIROSHI;HIROHATA KEISHIRO;FUJII TAKUYA;FUJITEC CO., LTD. 发明人 KASHIWAKURA HIROSHI;HIROHATA KEISHIRO;FUJII TAKUYA
分类号 B66B13/14 主分类号 B66B13/14
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