Expansible chamber devices – Piston – Side wall portion includes peripheral axially extending...
Patent
1979-10-25
1982-01-12
Cohen, Irwin C.
Expansible chamber devices
Piston
Side wall portion includes peripheral axially extending...
60562, 60581, 92248, 92249, 92253, F16J 102, F16J 908
Patent
active
043099378
ABSTRACT:
Each of the pistons has a metallic, ceramic or high glass nylon plastic core insert with glass-filled nylon plastic molded around it to form the finished piston. The finished piston is ready to use as it comes from the mold. The core insert is designed to maintain a substantially uniform plastic wall thickness and provide support lands behind the high pressure lands of the piston. The core insert also incorporates undercuts or grooves to prevent the core from being pushed out of the piston assembly. The grooves also allow the plastic to bond to the core. The core insert transmits the direct axial force of the push rod, and the plastic outer case supports the seals.
REFERENCES:
patent: 1802281 (1931-04-01), Shimer
patent: 2170574 (1939-08-01), Sauzedde
patent: 2214261 (1940-09-01), Roth
patent: 2349345 (1944-05-01), Goepfrich
patent: 2962330 (1960-11-01), Kohl
patent: 3334549 (1967-08-01), Sheldon
patent: 3464323 (1969-09-01), Saksun
patent: 3505930 (1970-04-01), Schrader
patent: 3636824 (1972-01-01), Clark
patent: 4079951 (1978-03-01), Sievenpiper
Cohen Irwin C.
General Motors Corporation
McGraw D. D.
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