Resources Contact Us Home
Safety hydraulic brake system for automotive vehicles

Image Number 10 for United States Patent #4159755.

A safety hydraulic brake system for automotive vehicles which includes a control cylinder having an inlet connected to a hydraulic pressure source, and first and second outlets connected to brake cylinders at front and rear wheels, respectively. A valve is located at each outlet and normally allows pressurization of the front and rear wheel cylinders upon actuation of the hydraulic pressure source. First and second pistons, each having a by-pass valve, are slidable in the control cylinder. The pistons and by-pass valves are operable, when there is a loss of brake pressure in the lines to one set of brake cylinders, to effect closing of the control cylinder valve to that brake cylinder set. This allows brake pressure to be maintained at the other set of wheel cylinders and the vehicle to be safely braked. In addition, for heavy vehicles such as buses and trucks, an additional control cylinder device can be incorporated providing separate braking systems for each of the rear wheels so that loss of brake pressure to one rear wheel does not affect brake pressure at the other. Further, the system is designed to accomodate ready air bleeding from the brake lines.

  Recently Added Patents
Printing system and printing device having two information transmission paths
Carbamate-substituted oxindole derivatives and use thereof for the treatment of vasopressin-dependent diseases
Heat recycling system
Antenna device and mobile communication terminal
Zoom lens, imaging device and information device
Patterning process
Strawberry plant named `DrisStrawThirtyFour`
  Randomly Featured Patents
Graphics mechanism and apparatus for mipmap level estimation for anisotropic texture mapping
Method of producing seamless steel tubes
Extraction of solute from solute-bearing material
Semiconductor integrated electronic device and corresponding manufacturing method
Method of repairing leaks in a hollow capillary fiber diffusion device
Active matrix OED array
Mineral building materials with additives
Sacrificial anode apparatus
Nitrodiphenyl ether herbicides