Frictionless damper

Details Frictionless damper Frictionless damper

1987-12-21

1989-03-28

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Relative speed of thrust member or fluid flow

188269, 18832215, F16F 904, F16F 932

Patent

active

048155748

ABSTRACT:
A frictionless hydraulic damper having a cylinder and a piston head and piston rod connected to the piston head, with the piston head dividing the cylinder into chambers on opposite sides thereof and with the piston rod extending beyond the cylinder, and with sealed bellows extending between the end walls of the cylinder and opposite sides of the piston which confine the fluid to the space between the outside of the bellows and the wall of the cylinder and thus prevent leakage of hydraulic fluid from the cylinder and eliminate the need for fluid seals on the piston rod.

REFERENCES:
patent: 3024874 (1962-03-01), Koning et al.
patent: 3043404 (1962-07-01), Peras
patent: 3105574 (1963-10-01), Hoffmann et al.
patent: 3469661 (1969-09-01), Hoffmann et al.
patent: 3662649 (1972-05-01), Williams

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