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
Compressing data using an encoding table
Process for producing lower-hydrocarbon aromatization catalyst and lower-hydrocarbon aromatization catalyst
Methods and systems for allocating a USB device to a trusted virtual machine or a non-trusted virtual machine
Method and apparatus for browsing using alternative linkbases
Communication method of mobile terminal, pico base station, and macro base station in heterogeneous network
Lens-based image augmenting optical window with intermediate real image
Hierarchical memory arbitration technique for disparate sources
  Randomly Featured Patents
Wavelength conversion laser
Silicon nitride sidewall and top surface layer separating conductors
Protein for use in modifying abiotic stress tolerance in yeast
Strengthened can bodies of thin-walled metal
Monitoring pattern, and pattern stitch monitoring method and wafer therewith
Handheld electronic device
Ferrite core in deflection yoke for Braun tube
Gravity-feed display and dispensing
Method and apparatus for fabricating a continuous length of cleated belting
Methods of fabricating silicon carbide devices incorporating multiple floating guard ring edge terminations