Piston cup and cylinder assembly

Details Piston cup and cylinder assembly Piston cup and cylinder assembly

1987-02-20

1988-03-15

Croyle, Carlton R.

Expansible chamber devices

Piston

Side wall portion includes peripheral axially extending...

417299, 417571, 137521, 137855, F16J 908, F04B 3910

Patent

active

047305509

ABSTRACT:
A seal and retainer assembly for an air compressor piston includes a cup-shaped seal with its marginal edge extending at an angle relative to the cylinder wall, the seal having a notch extending circumferentially at the base of its marginal edge defining a hinge which allows pivoting of the marginal edge relative to the main body portion of the seal which is clamped to the piston. A head plate includes an air intake port for communicating the compression chamber with an air inlet and a discharge port for communicating the compression chamber with a compressed air discharge outlet, each of the ports having a flexible spring closure member cooperating with an inclined valve seat to allow the ports to be open whenever the compressor is shut off.

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patent: 4537566 (1985-08-01), Blass et al.
patent: 4540352 (1985-09-01), Becker
patent: 4642037 (1987-02-01), Fritchman

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