Valve block for a control device, particularly for a...

Details Valve block for a control device, particularly for a... Valve block for a control device, particularly for a...

2006-05-16

2006-05-16

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

With means to increase head and seat contact pressure

Spring

C251S333000

Reexamination Certificate

active

07044442

ABSTRACT:
The invention relates to a valve block (1) for a control device comprising a valve (9) whose valve piston (14) is subjected to the action of a control pressure when in its open position and to the action of a return spring (15) when in its closed position. The closing force of the return spring (15) can be decreased or increased by an actuator, which can be displaced toward a position that increases the closing force and one that decreases the closing force. In order to simplify the displacement or adjustment and to improve reliability, the displacing movement of the actuator (16a) in the direction of movement that increases the closing force of the return spring (15) is limited by a stop element (112) in a position in which the closing force of the return spring (15) reaches its limited maximum value.

REFERENCES:
patent: 1689974 (1928-10-01), Shallcross
patent: 2229234 (1941-01-01), Williams
patent: 2299234 (1942-10-01), Snader et al.
patent: 2641871 (1953-06-01), Ray
patent: 3205832 (1965-09-01), Daub
patent: 3662986 (1972-05-01), Domulewicz, Sr.
patent: 3985472 (1976-10-01), Virtue et al.
patent: 4050477 (1977-09-01), Acar
patent: 4050478 (1977-09-01), Virtue et al.
patent: 4331045 (1982-05-01), Piech et al.
patent: 4355761 (1982-10-01), Bjorn et al.
patent: 4760866 (1988-08-01), Adler
patent: 199 53 170 (2001-05-01), None
patent: 1013680 (1965-12-01), None
patent: WO 03/014570 (2003-02-01), None

Affiliated with

Also associated with

Rating

Valve block for a control device, particularly for a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve block for a control device, particularly for a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve block for a control device, particularly for a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3597485