Patent ID: 7441639

Claim:
A dashpot comprising: a working cylinder; a damping fluid arranged in said working cylinder; a working piston movably arranged in said working cylinder, said working piston partitioning the working cylinder into first and second compartments, said working piston including a working throttle restricting damping fluid flow between said first and second compartments, said working throttle providing a first damping characteristic on said damping fluid; a pressure compensation chamber in fluid connection with said working cylinder; a floating piston movably arranged in said pressure compensation chamber, said floating piston partitioning the pressure compensation chamber into a first partial chamber and a second partial chamber, said first partial chamber being in fluid communication with said first compartment of said working cylinder, said second partial chamber being in fluid communication with said second compartment of said working cylinder, said pressure compensation chamber and said floating piston being arranged to restrict damping fluid flow between said compartments and said partial chambers, said pressure compensation chamber and said floating piston restricting said damping fluid less than said working throttle, said pressure compensation chamber and said floating piston providing a second damping characteristic on said damping fluid; a bumper arranged on one end of said floating piston, said bumper providing a gradual transition from said second damping characteristic to said first damping characteristic when said bumper reaches one end of said pressure compensation chamber, said transition initially including said second damping characteristic, then diminishing said second damping characteristic while increasing to said first damping characteristic, said transition ending with said first damping characteristic.