Piston assembly

Details Piston assembly Piston assembly

1987-06-01

1989-05-23

Garrett, Robert E.

Expansible chamber devices

Abutment connection between working member and power...

92248, 92187, 403135, 403143, 403 76, 403165, 60582, F16J 110

Patent

active

048319163

ABSTRACT:
A piston assembly including a plastic piston defining a socket at its rear face and a metallic annular insert member positioned within the socket and receiving the piston rod of the piston assembly in acting to increase the effective area over which the loading from the piston rod is applied to the plastic piston so as to allow the plastic piston to be used in environments where it might otherwise fail due to the high stress loading. The annular insert also includes prongs struck from the main body portion of the insert member and coacting with an annular shoulder on the piston rod to preclude axial withdrawal of the piston rod from the piston and further includes an annular flange portion which acts to facilitate positioning of the insert member in the socket in the piston and further acts to define the fully retracted or extended position of the piston in coaction with a snap ring on the inner periphery of the associated cylinder.

REFERENCES:
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patent: 4072014 (1978-02-01), Garoner
patent: 4528895 (1985-07-01), Nakamura
patent: 4569271 (1909-03-01), Reynolds

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