Gas rotary valve

Details Gas rotary valve Gas rotary valve

2010-01-08

2011-12-27

Fristoe, Jr., John (Department: 3753)

Valves and valve actuation

With selective flow regulation

Different sized bores in valve head

C251S310000

Reexamination Certificate

active

08083208

ABSTRACT:
A gas rotary valve comprises a valve body (1), a valve core (2), a valve cover (3), an actuating shaft (4) and a regulator positioning pin (6). The valve core (2) has a large through hole (22), a first small through hole (23) and a second small through hole (24) which are all disposed on a peripheral surface of said valve core (2). A guide pin (41) radially disposed on the rear end of the actuating shaft (4), a first step (3a;3c), the rear end (61) of the regulator positioning pin (6) and a second step (3b;3d) are disposed in distance in the inner chamber of said valve cover (3), respectively preventing the guide pin (41) from rotating. The three through holes on the peripheral surface of the valve core can respectively be communicated with the inlet passage of the valve body.

REFERENCES:
patent: 2101356 (1937-12-01), Zak
patent: 2665107 (1954-01-01), Blackford
patent: 3292660 (1966-12-01), Zarybnicky
patent: 3693874 (1972-09-01), Fox
patent: 3712580 (1973-01-01), Shopsky
patent: 3764102 (1973-10-01), Shopsky
patent: 4029291 (1977-06-01), Carlson
patent: 4137945 (1979-02-01), Cutts
patent: 4862917 (1989-09-01), Genbauffe
patent: 5277221 (1994-01-01), Amaya
patent: 6520481 (2003-02-01), Harneit
patent: 6863257 (2005-03-01), Home
patent: 7156370 (2007-01-01), Albizuri

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