Actuator for rotor valve

Details Actuator for rotor valve Actuator for rotor valve

2007-01-16

2007-01-16

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

Limit stop

Rotary valve

C251S063400, C251S014000, C251S058000, C251S250000

Reexamination Certificate

active

11285846

ABSTRACT:
An actuator (16) for a rotor valve (10). The actuator includes a rack (86) for driving a pinion gear (87) of the valve. The rack is moved between first and second positions by the action of a first piston (88). Movement of the first piston and rack is selectively restricted in one direction by the movement of a moveable stop (104) from a withdrawn position to an extended position, thereby defining a third position of the rack. The moveable stop may be driven by a second piston (102). The first and second pistons may be powered by a common compressed air supply (122). The cross-sectional area of the first piston may be at least 1.4 times the cross-sectional area of the second piston to ensure that the force exerted by the first piston is not sufficient to displace the moveable stop from the extended position when the second piston is open to the compressed air supply.

REFERENCES:
patent: 2371657 (1945-03-01), Stark
patent: 3218026 (1965-11-01), Roy, Sr.
patent: 4165763 (1979-08-01), Hough
patent: 4338857 (1982-07-01), Mason
patent: 4414109 (1983-11-01), Aurthur
patent: 4548385 (1985-10-01), Barbuto
patent: 4564169 (1986-01-01), Nordlund
patent: 4949936 (1990-08-01), Messina
patent: 5154147 (1992-10-01), Muroki
patent: 5372104 (1994-12-01), Griffin
patent: 5413256 (1995-05-01), Mitchell et al.
patent: 5415147 (1995-05-01), Nagle et al.
patent: 5556271 (1996-09-01), Zuercher et al.
patent: 5941206 (1999-08-01), Smith et al.
patent: 6076799 (2000-06-01), Baumann
patent: 6085788 (2000-07-01), Larson et al.
patent: 6098576 (2000-08-01), Nowak, Jr. et al.
patent: 6196167 (2001-03-01), Marsh et al.
patent: 6230668 (2001-05-01), Marsh et al.
patent: 6308739 (2001-10-01), Barbuto et al.
patent: 6345805 (2002-02-01), Chatufale
patent: 6371439 (2002-04-01), Trevisan
patent: 6647934 (2003-11-01), Marsh

Affiliated with

Also associated with

Rating

Actuator for rotor valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Actuator for rotor valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuator for rotor valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3722162