Resources Contact Us Home
Parking brake system

Image Number 6 for United States Patent #7651175.

A parking brake system is provided in which a parking brake state for a wheel brake (2A) is obtained by forward movement of a parking piston (44) slidably fitted into a casing (23) with the rear side of the parking piston (44) facing a parking control fluid pressure chamber (47), and the forwardly moved state of the parking piston (44) is mechanically locked by spheres (58) pushed up as a result of forward movement of a lock piston (56) of a lock mechanism (31). Moreover, a plurality of guide grooves (126), into which parts of the spheres (58) are rollably fitted, are provided on the inner face of a large diameter hole (38), the inner face of a restricting step (42), and the inner face of a small diameter hole (39), the guide grooves (126) having a concavely curved cross-sectional shape and extending in the axial direction of an insertion shaft (59). This enables an automatic parking brake state to be obtained by a simple structure without consuming power.

  Recently Added Patents
Inductive signal transfer system for computing devices
Reading apparatus and reading method
Heap/stack guard pages using a wakeup unit
Bit error mitigation
Developing device
Transaction finance processing system and approach
Method of controlling semiconductor device, signal processing method, semiconductor device, and electronic apparatus
  Randomly Featured Patents
Method of post production sound recording for video taped programs
Mobile telephone
Camera support
Gas delivery system for reducing oxidation in wire bonding operations
Apparatus for removing bulk material from a dump or stockpile
Imaging device and method for operating an imaging device
Node based path selection randomization
Polybutylene glycol dimethacrylate and resin composition for cast polymerization