Resources Contact Us Home
Nonreturn valve for a shock absorber

Image Number 4 for United States Patent #7766137.

Shock absorber provided with a piston and a cylinder, both secured to a part of a vehicle. A nonreturn valve is present in either the piston or the base of the cylinder. The nonreturn valve includes a valve plate and a valve seat plate, both annular. Near the center, the valve plate is arranged at a distance from the valve seat plate. At low flow velocity, elasticity of the valve plate keeps it at a distance from the valve seat plate, allowing unimpeded flow. As flow increases, the valve plate deforms elastically, gradually closing off a diametral opening in the valve seat plate. An opening remains between the valve plate and the valve seat plate at the spacer. As the pressure difference across the nonreturn valve increases, the valve plate closes off with respect to the valve seat plate over the entire circumference. This movement takes place as a wave.

  Recently Added Patents
Method and apparatus for providing charging status information to subscriber of communication service
Scale information for drawing annotations
Community profiling for social media
Semiconductor device
Multi-carrier operation for wireless systems
Cross-linkable compositions
Single-pass Barankin Estimation of scatterer height from SAR data
  Randomly Featured Patents
Electrical connector
Charge and discharge control circuit and battery device
Toy kitchen sink
Method and apparatus for charging transparent material
Knock-down shipping and storage container
Tapered threshold reset FET for CMOS imagers
Thin film magnetic head with a particularly shaped magnetic pole piece and spaced relative to an MR element
Rotor for permanent magnet motor