Parking brake lock

Details Parking brake lock Parking brake lock

2005-12-06

2005-12-06

Graham, Matthew C. (Department: 3683)

Brakes

Wheel

Axially movable brake element or housing therefor

C188S156000, C188S162000, C188S265000

Reexamination Certificate

active

06971485

ABSTRACT:
A locking mechanism for a disc brake that retains a clamping force that holds first and second friction members into engagement with a rotor to sustain a brake application. The locking mechanism is characterized by a first threaded member integrally attached to a piston located in a bore. The piston is moved within the bore to establish a clamping force and is prevented from rotating with respect to the bore by means of anti rotation members associated with the piston. A second threaded member rotates on the first threaded member with movement of the piston. A third member is moved into contact with the second threaded member to prevent rotation of the second threaded member and retaining clamping force on the friction members to affect a parking brake application.

REFERENCES:
patent: 4619347 (1986-10-01), Schreiner et al.
patent: 5038895 (1991-08-01), Evans
patent: 5180037 (1993-01-01), Evans
patent: 5921354 (1999-07-01), Evans
patent: 6000489 (1999-12-01), Rick
patent: 6315092 (2001-11-01), Schwarz
patent: 6405836 (2002-06-01), Rieth et al.
patent: 6481543 (2002-11-01), Shaw et al.
patent: 6752249 (2004-06-01), Jungbecker et al.

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