发明名称 Signaling device for detecting the presence of an object
摘要 A sheet switch (142) has a bottom layer (144) and a top layer (160). First and second conductors (148, 162) located on the bottom layer (144) form two separate conductive paths, with a voltage potential applied to the conductors (148, 162). The top layer (160) includes a ground conductor (172). Spacers (178) are positioned between the top and bottom layers (160, 144). When forces are externally applied, the spacers (178) collapse and the ground conductor (172) contacts the first and second conductors (148, 162), and establishes a conductive path therebetween.
申请公布号 US8134473(B2) 申请公布日期 2012.03.13
申请号 US20090422029 申请日期 2009.04.10
申请人 CHG HOSPITAL BEDS INC. 发明人 ROUSSY RICHARD
分类号 G08B21/00 主分类号 G08B21/00
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