Low reexpansion valve system

Details Low reexpansion valve system Low reexpansion valve system

1991-04-16

1992-12-29

Koczo, Michael

Pumps

Expansible chamber type

Valved piston

417553, 417570, 13751621, F04B 2104

Patent

active

051747359

ABSTRACT:
A scotch yoke compressor including a valve system wherein an annular discharge port is defined by an opening in the valve plate and a washer attached to the cylinder head. A valved piston includes a valve retainer having an annular protuberance that extends above the piston head and is received within the annular discharge port when the piston is at top dead center, thereby reducing reexpansion volume.

REFERENCES:
patent: 1764655 (1927-11-01), Spreen
patent: 1996763 (1935-04-01), Halleck
patent: 2158351 (1939-05-01), Ames et al.
patent: 2199452 (1940-05-01), Voss
patent: 2812893 (1957-11-01), Cotter
patent: 3807910 (1974-04-01), Paget
patent: 3971407 (1976-07-01), Hudson et al.
patent: 4752190 (1988-06-01), Fry
patent: 4834632 (1989-05-01), Gatecliff et al.
patent: 5080565 (1992-01-01), Schultz et al.

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