Fluid handling – Systems – Multi-way valve unit
Patent
1987-04-13
1989-04-25
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
91375A, 180148, F15B 1304
Patent
active
048238392
ABSTRACT:
A rotary valve assembly and a method of assembling such a valve has a sleeve 5 and a rotor 3 relative rotation between which from a neutral condition adjusts the valve. The sleeve and rotor are biased to the neutral condition by an encircling C-spring reacting on pins corresponding to projections 11a and 12 relatively rotatable with the sleeve 5 and rotor 3 respectively. For setting-up the valve in its neutral condition the sleeve and rotor are mounted in a jig 15 with the projection 11a of the jig engaging in a recess 27 of an adjustable component in the form of a second C-spring 24 which is intitially rotatable on the sleeve 5. The sleeve 5 is rotated relative to the spring 24 and projections 11a and 12 to determine the neutral condition by the characteristics of fluid applied through valve ports E, S, P.sub.1, P.sub.2. The spring 24 is now welded or otherwise secured to the sleeve 5. The spring 24 serves to frictionally engage the sleeve and alleviates displacement relative thereto following adjacent of the valve to the neutral condition and prior to welding. In a second embodiment the projection 11a directly engages the sleeve 5 to restrain relative rotation therebetween and the pin 12 is carried by a C-spring to be rotationally adjustable on the rotor 3 for the purpose of setting-up the valve in its neutral condition prior to the pin 12 being welded to the rotor 3.
REFERENCES:
patent: 3145626 (1964-08-01), Vickers et al.
patent: 3296939 (1967-01-01), Eddy
patent: 4177714 (1979-12-01), Schluckebier
patent: 4449601 (1984-05-01), Adams
patent: 4487225 (1984-12-01), Adams
patent: 4699174 (1987-10-01), Bishop
Michalsky Gerald A.
TRW Cam Gears Limited
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