Noise reducing wear shield for piston face

Details Noise reducing wear shield for piston face Noise reducing wear shield for piston face

1989-09-28

1991-02-26

Nilson, Robert G.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417562, F04B 2102

Patent

active

049957953

ABSTRACT:
A wear shield attached to a piston in a piston type compressor cushioning impact and reducing friction between the piston and a valve which opens in a direction toward the piston. During some conditions of operation, without the wear shield, a piston can impact the opening valve, which opens interior of a cylinder which holds the piston. The wear shield installed between the piston and the opening valve reduces wear on the piston and on the valve, and also reduces operating noise.

REFERENCES:
patent: 1408638 (1922-03-01), Prellwitz
patent: 1883328 (1932-10-01), Bihl et al.
patent: 2338544 (1944-01-01), Scattoloni
patent: 2877792 (1959-03-01), Tybus
patent: 2963217 (1960-12-01), Wysong, Jr.
patent: 2984408 (1961-05-01), Nicholas
patent: 3606588 (1971-09-01), Romerhaus
patent: 3961868 (1976-06-01), Droege et al.
patent: 4275999 (1981-06-01), Hetzel et al.

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