Hydraulic actuator

Details Hydraulic actuator Hydraulic actuator

1989-07-03

1991-02-05

Look, Edward K.

Expansible chamber devices

With guide or seal on cylinder end portion for piston or...

Non-metallic seal means between piston or member and end...

921691, 921711, 60562, 60588, 277205, 277212C, F16J 1518

Patent

active

049894986

ABSTRACT:
Improvement in an annular seal for use in a hydraulic actuator is obtained in accordance with the present invention, which annular seal is of the type including fitting holes to be inserted by projections formed in a piston guide and is adapted to be mounted between a piston guide sleeve and the piston guide, by the provision of annular projections extending in an annular shape and in the axial direction of the seal in the inner and outer circumferential portions with respect to the location of the fitting holes or in the circumferential area of the piston guide corresponding to that circumferential portions.

REFERENCES:
patent: 3186174 (1965-06-01), Hayman
patent: 4474005 (1984-10-01), Steer
patent: 4527395 (1985-07-01), Gaiser et al.
patent: 4559781 (1985-12-01), Steer et al.
patent: 4685300 (1987-08-01), Steer

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