发明名称 ELEVATOR BRAKING DEVICE
摘要 <p>An exemplary elevator braking device comprises a brake housing. A plurality of rollers are supported by the brake housing. The rollers are arranged to be positioned on opposite sides of a guiderail. The rollers are selectively moveable between a first position in which the rollers are spaced apart a first distance and a second position in which the rollers are spaced apart a second, smaller distance so that the rollers engage and roll along opposite sides of the guiderail. At least one biasing member is supported by the brake housing. The biasing member is associated with at least one of the rollers and biases the associated roller toward the other roller in the second position. A plurality of braking surfaces are supported by the brake housing. At least one braking surface is associated with each of the rollers. Each braking surface engages a periphery of the associated roller that faces the side of the guiderail. Friction between the periphery of the associated roller and the braking surface provides a stopping force.</p>
申请公布号 HK1176920(A1) 申请公布日期 2015.11.13
申请号 HK20130103803 申请日期 2013.03.26
申请人 OTIS ELEVATOR COMPANY 发明人 BILLARD, JUSTIN;DRAPER, JAMES, M.;COONEY, ANTHONY
分类号 B66B 主分类号 B66B
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