Resources Contact Us Home
Shock absorber unit for vehicles

Image Number 3 for United States Patent #4485899.

In a shock absorber unit for vehicles of the double-tube type a piston rod guiding and sealing unit is provided adjacent a first end of a cylinder and a container surrounding the cylinder, and a bottom valve unit is provided at a second end of the cylinder and the container, respectively. The cavity within the cylinder is divided into two working chambers by a piston unit. The piston unit is connected to a piston rod extending through the piston rod guiding and sealing unit. The cavity within the cylinder is filled with a damping liquid. The compensation chamber defined radially between the cylinder and the container is partially filled with damping liquid and partially filled with gas. Adjacent the piston rod guiding and sealing unit, there is provided a by-pass connection the working chamber adjacent the piston rod guiding and sealing unit and the compensation chamber. This by-pass defines a throttling flow cross-sectional area. This flow cross-sectional area is defined by a temperature sensitive member having a high coefficient of thermal expansion, such that the throttling flow cross-sectional area is reduced in response to increasing temperature. By this reduction the reduction of viscosity is compensated for, such as to maintain the damping characteristic of the shock absorber unit approximately invariable within a predetermined range of operational temperatures.

  Recently Added Patents
Fluorine-free fused ring heteroaromatic photoacid generators and resist compositions containing the same
Separate matching models based on type of phone associated with a caller
Methods and compositions for inhibiting progression to chronic cardiac failure
Support tray for server
Drug comprising as the active ingredient proliferative vector containing survivin promoter
Permanent magnet rotor with flux concentrating pole pieces
Method of manufacturing toner
  Randomly Featured Patents
Controlled deflection roll
Method and apparatus for performing a path search
Disc cutting apparatus
Apparatus for adjusting knives for a pouch form, fill, seal machine
Method and apparatus for shaping a distal femoral surface
Method and apparatus for distributing it management practice information
Athletic performance monitoring systems and methods in a team sports environment
Compound resistor manufacturing method
Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
Complex of ras-farnesyltransferase inhibitor and sulfobutylether-7-.beta.-cyclodextrin or 2-hydroxypropyl-.beta.-cyclodextrin and method