Control valve assembly structure for spray guns

Details Control valve assembly structure for spray guns Control valve assembly structure for spray guns

2007-11-20

2007-11-20

Yu, Justine R. (Department: 3751)

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

C251S331000, C239S526000, C239S570000

Reexamination Certificate

active

11176366

ABSTRACT:
A control valve assembly structure for spray guns comprises a pistol body made up of water inlet and outlet conduits in fluid communication with a valve chamber having a control valve assembly mounted therein wherein the water inlet and outlet conduits and the valve chamber are respectively equipped with a first aperture, a second aperture, and a third aperture having a narrowed opening to form a stop seat for the abutting location of an end cover. The end cover has a receiving section and an actuating groove disposed therein for the accommodation of a valve seat and a spring element respectively, permitting a valve sleeve and a plunger flexibly pushed by the spring element to abut tight against a flexible valve whose water-sealing portion is stretched to tightly seal off the third aperture thereby, facilitating an even application of force thereon as well as an easier and economical processing thereof.

REFERENCES:
patent: 3763881 (1973-10-01), Jones
patent: 6352212 (2002-03-01), Wang
patent: 6796515 (2004-09-01), Heren et al.

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