Resources Contact Us Home
Pneumatically actuated parking brake

Image Number 4 for United States Patent #6994191.

A vehicle parking brake system pneumatically actuates an air cylinder to mechanically lock a wheel brake in an applied position in response to a parking demand request. The air cylinder includes an extendable shaft that supports a lock member. When a parking demand request is initiated by moving a hand control, an air chamber is pressurized with air from a parking reservoir via a valve assembly to apply the wheel brake. Air pressure is released from the air cylinder and the lock member is moved into engagement with a brake component to lock the wheel brake in the applied condition. The wheel brake remains locked even if pressure is released from the air chamber. When a release command is initiated, the air cylinder is pressurized and the lock member is moved out of engagement with the brake component.

  Recently Added Patents
Image sensing apparatus and method of controlling the image sensing apparatus
Method, apparatus, and system for energy efficiency and energy conservation including dynamic cache sizing and cache operating voltage management for optimal power performance
Image reproduction system and image reproduction processing program
Printing apparatus having extendable functionality and method thereof
Computerized apparatus for identifying industries for potential transfer of a job function
Method and system for constructing a customized web analytics application
Rechargeable battery
  Randomly Featured Patents
Method, system and program product for recording and replaying target service interaction data
Tube bending apparatus and method
Asynchronous phase detector for a PLD independent of timing requirements
Diacylglycerin and cosmetic composition
Stent with compact crimp configuration
Light integration apparatus for use in a projection device
Current steering reduced bitline voltage swing, sense amplifier
Derivatives of penicillanic acid
Stamp such as a postage stamp and a method for producing it
Method and apparatus for converting spectral and light intensity values directly to digital data