Damper

Details Damper Damper

2004-12-13

2008-03-25

King, Bradley (Department: 3683)

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

C188S280000, C188S322150

Reexamination Certificate

active

07347308

ABSTRACT:
A damper includes a piston with an orifice communicating in an axial direction and dividing a cylinder into two portions in the axial direction, and provides a braking force by resistance of a viscous fluid passing through the orifice when the piston moves inside the cylinder. The piston includes an inner member and an outer member movable in the inner member in the axial direction, which are loosely fitted with a gap for passing the viscous fluid. The inner and outer members are elastically urged with a spring in a direction wherein the inner and outer members are spaced. As the inner member moves to the outer member faster, the gap becomes narrower.

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