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
Avalanche photo diode and method of manufacturing the same
Potentiometric-sensor chip, potentiometric assay, and assay kit
Build process management system
Power surface mount light emitting die package
LED lamp including heat dissipator
Single integrated circuit configured to operate both a capacitive proximity sensor device and a resistive pointing stick
Device for installing conducting components in structures
  Randomly Featured Patents
Sour shift process for the removal of carbon monoxide from a gas stream
Vehicle emergency sign
Insulated gate semiconductor device
Image forming apparatus and method for detecting the fullness of waste-toner container
Method and system for providing a message-time-ordering facility
Single irrigating solution used in ocular therapy for the endothelium protection and cornea preservation
Method for incorporation of post-production operations to a web output from an image transfer device
Feedback control system for gas flow in internal combustion engine for purpose of exhaust gas purification
Method and apparatus for keyword mass generation
Heteroaryl amines as novel acetylcholinesterase inhibitors