Resources Contact Us Home
Pressure relief valve

Image Number 2 for United States Patent #6352085.

A pressure relief valve for an oil pump of an automotive internal combustion engine. The pressure relief valve comprises a wall defining thereinside a valve accommodating bore. The wall is formed with a plurality of pressure relief holes including first and second pressure relief holes through which oil in the valve accommodating bore is releasable to an outside of the valve accommodating bore. A valve body is provided to be slidably movable in the valve accommodating bore and along the wall under balance between oil pressure acting on the valve body in a first direction and biasing force of a spring acting on the valve body in a second direction opposite to the first direction. In this arrangement, the second pressure relief hole is opened after the first pressure relief hole is opened to have a maximum cross-sectional opening area in a process of movement of the valve body in the first direction along the axis of the valve accommodating bore.

  Recently Added Patents
Mobility management in a communications system
Data scrambling in memory devices
Differentiated PSIP table update interval technology
Inhibition of HRP-3 using modified oligonucleotides
Apparatus and methods for providing efficient space-time structures for preambles, pilots and data for multi-input, multi-output communications systems
Light emitting device
Vehicle running control system
  Randomly Featured Patents
Travel pillow
Heterojunction photovoltaic cell with dual doping and method of manufacture
Cutlery which does not soil and a method for its production
Image forming apparatus
Yarn draw-off pipe for an open-end spinning device
Post-write address word correction in cache memory system
Hair brush
Self-restraining loop clamp
Headswitch and footswitch circuitry for power management
Seat belt pretensioner