Metered spray dampening system

Details Metered spray dampening system Metered spray dampening system

1975-10-02

1977-09-27

Fisher, J. Reed

Printing

Planographic

Dampeners

101366, 118313, B41F 730, B41L 2506

Patent

active

040503780

ABSTRACT:
A multiple spray nozzle, offset press dampening system of the type having individual metering pumps for the respective nozzles utilizes a device for opening the pump output valves while maintaining dampening liquid feed pressure substantially elevated, thereby purging feed lines, pump passageways and pump chambers of bubbles and particles which would interfere with accurate metering. Constant recirculation and filtering of the feed liquid under pressure maintains purging liquid substantially bubble and particle free.

REFERENCES:
patent: 1185667 (1916-06-01), Hoe
patent: 1185668 (1916-06-01), Hoe
patent: 1924731 (1933-08-01), Barnes
patent: 2389730 (1945-11-01), Iger
patent: 2714853 (1955-08-01), Schlamann
patent: 3023968 (1962-03-01), Mitchell
patent: 3065693 (1962-11-01), Neal et al.
patent: 3341124 (1967-09-01), Barnes
patent: 3348774 (1967-10-01), Wiggins
patent: 3450092 (1969-06-01), Kock
patent: 3529626 (1970-09-01), German
patent: 3651756 (1972-03-01), Smith, Jr.
patent: 3949668 (1976-04-01), Smith, Jr.

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