Skirted dashpot piston

Details Skirted dashpot piston Skirted dashpot piston

1975-04-14

1976-06-01

Kunin, Stephen G.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

188284, 188321, 197183, F16F 948

Patent

active

039602508

ABSTRACT:
An improved decelerating mechanism of the dashpot type in which the piston normally leaves the cylinder on each operating cycle and has a sealing ring cantilevered in the direction of piston travel having a deep undercut whereby air pressure of the air compressed in front of the piston inside the cylinder biases the cantilevered sealing ring against the wall of the cylinder to accomplish effective sealing of the piston against uncontrolled air leakage. A projection on the front of the piston seals the air exit from the compression chamber during the last portion of piston travel in order to provide a final cushion for the moving dashpot piston.

REFERENCES:
patent: 329298 (1885-10-01), Elliott
patent: 478388 (1892-07-01), Wright
patent: 565377 (1896-08-01), Brunthaver
patent: 671559 (1901-04-01), Lindstrom
patent: 2702398 (1955-02-01), Marcus
patent: 2884291 (1959-04-01), Whitten
patent: 3163261 (1964-12-01), Sim
patent: 3318202 (1967-05-01), Means

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