Worm thread seal for steering gear

Details Worm thread seal for steering gear Worm thread seal for steering gear

1977-11-30

1979-11-27

Cohen, Irwin C.

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

Element extends through working member portion

744248R, 92136, 92185, 277 27, 277203, F01B 308, F16J 1540

Patent

active

041754751

ABSTRACT:
Worm to rack piston seal for power steering gear having a resilient cylindrical body with internal thread construction conforming to the profile and lead of the worm for a rack piston nut. During powered right and left turns, the seal is pressure loaded radially for improved fluid sealing and relaxed during low pressure conditions when there is no steering input for improved returnability of the rack piston nut to its centered position.

REFERENCES:
patent: 1612038 (1926-12-01), Miller
patent: 3116931 (1964-01-01), Edwards
patent: 3443814 (1969-05-01), Dahlheimer
patent: 3579984 (1971-05-01), Rohde
patent: 3727925 (1973-04-01), Jones

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