Motor-driven disk brake

Details Motor-driven disk brake Motor-driven disk brake

2005-11-01

2005-11-01

Butler, Douglas C. (Department: 3683)

Brakes

Wheel

Axially movable brake element or housing therefor

C188S072800, C188S158000, C188S162000, C188S071800

Reexamination Certificate

active

06959791

ABSTRACT:
A motor-driven disk brake having a caliper containing a piston for pressing a brake pad, a rotary actuator and a rotary-to-rectilinear motion converting mechanism for transmitting rotation of the rotary actuator to the piston after converting it into rectilinear motion. The piston is driven in response to rotation of the rotary actuator to press the brake pad against a disk rotor, thereby generating braking force. A brake releasing mechanism for returning the rotary-to-rectilinear motion converting mechanism to its initial position in the event of a failure in the rotary actuator is interposed between a rotating member and a rectilinearly moving member that constitute the rotary-to-rectilinear motion converting mechanism. The brake releasing mechanism has an urging device for generating a torque in the direction for returning the piston in response to the rotation of the rotating member in the direction for advancing the piston. The urging device generates a torque greater than the rotational resistance of the rotating member of the rotary-to-rectilinear motion converting mechanism.

REFERENCES:
patent: 6179097 (2001-01-01), Schumann
patent: 6257377 (2001-07-01), Schumann
patent: 6374958 (2002-04-01), Usui et al.
patent: 6491140 (2002-12-01), Usui et al.
patent: 6571921 (2003-06-01), Ohtani et al.
patent: 2003/0066719 (2003-04-01), Watanabe et al.
patent: 2004/0035655 (2004-02-01), Usui
patent: 2001-343038 (2001-12-01), None
patent: WO00/60255 (2000-10-01), None

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