Electric motor and brake assembly

Abstract

A motor and brake assembly includes a mounting member. A stator winding assembly, a brake assembly, a hub, and a rotor magnet assembly. The stator winding assembly is mounted to the mounting member. The brake assembly is operably connected to the mounting member. The hub is rotatably coupled to the mounting member. The rotor magnet assembly is mounted to an inside of a radially outer wall of the hub. The brake assembly is operable to move a component of the brake assembly between an engaged position where the component engages the inside of the radially outer hub wall and a disengaged position where the component is spaced apart from the inside of the radially outer hub wall.

1 - 46 . (canceled) 
     
     
         47 . A brake actuator comprising:
 an electromagnet;   a first shaft that includes a frusto-conical recess that includes an inner tapered surface and a flat inner wall;   a second shaft that includes a male frusto-conical end portion that includes an outer tapered surface and a flat end wall;   wherein application of an electromagnetic field by the electromagnet relatively moves the first and second shafts from an extended position to a retracted position;   wherein when the first and second shafts are in the retracted position, the flat end wall of the second shaft is in engagement with the flat inner wall of the first shaft.   
     
     
         48 . The actuator of  claim 47  wherein the inner tapered surface of the first shaft is spaced apart from the outer tapered surface of the second shaft when the flat end wall of the second shaft is in engagement with the flat inner wall of the first shaft. 
     
     
         49 . The actuator of  claim 47  wherein application of said electromagnetic field by said electromagnet moves said first shaft. 
     
     
         50 . The actuator of  claim 47  wherein application of said electromagnetic field by said electromagnet moves said second shaft. 
     
     
         51 . The actuator of  claim 47  further comprising a housing disposed around the electromagnet, a portion of the first shaft, and a portion of the second shaft. 
     
     
         52 . The actuator of  claim 47  further comprising a spring that biases the first and second shafts from the retracted position toward said extended position.