发明名称 |
ELEVATOR BRAKE ACTUATOR HAVING A SHAPE-CHANGING MATERIAL FOR BRAKE CONTROL |
摘要 |
An elevator machine (10) includes a motor (12) that rotationally drives a machine shaft (14). An elevator machine brake (20) applies braking force to a disk (22) that is coupled to the machine shaft (14) to slow or stop the rotation of the machine shaft (14). In one example, the elevator machine brake (20) includes a bias member (38) that applies a bias force to a caliper arrangement (32) to provide a braking force on the disk (22). A brake actuator (48) having a shape-changing material moves against the bias force to control engagement between the caliper arrangement (32) and the disk (22). A controller (26) selectively varies the braking force applied to the disk (22) by controlling an electric input to the shape-changing material of the brake actuator (48).
|
申请公布号 |
US2011240410(A1) |
申请公布日期 |
2011.10.06 |
申请号 |
US20050815674 |
申请日期 |
2005.02.25 |
申请人 |
BARRIO RODOLFO ROBLEDO;GIANNINI GIANFRANCO;GEWINNER JURGEN;PIECH ZBIGNIEW;HUBBARD JAMES;NOOR MUHAMMAD JEHANZEB |
发明人 |
BARRIO RODOLFO ROBLEDO;GIANNINI GIANFRANCO;GEWINNER JURGEN;PIECH ZBIGNIEW;HUBBARD JAMES;NOOR MUHAMMAD JEHANZEB |
分类号 |
B66B1/32;F16D65/18 |
主分类号 |
B66B1/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|