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
Multi-state DC-DC converter having undirectional switches
Laser protection polymeric materials
Stable pharmaceutical composition and methods of using same
Device for transmitting data between a serial data bus and working modules such as actuator modules and/or I/O modules
Server-side web analytics system and method
Methods and systems for improved engine speed control during engine starting
Fabrication of high gradient insulators by stack compression
  Randomly Featured Patents
Temperature control system for chemical reaction cell
Variable rate pacemaker having upper rate limit governor based on hemodynamic performance
Control system for internal combustion engines for automotive vehicles
Apparatus for accelerating revival of environment
Contact switching device
Bumper beam for a motor vehicle
Vehicle transmission
Method and system for supporting construction of underground continuous wall and excavator therefor
Gusseted package with reclosable zipper
Device for the workup of input material with a rotor-stator system