Device and method for the pneumatic control, and regulation...

Details Device and method for the pneumatic control, and regulation... Device and method for the pneumatic control, and regulation...

2006-01-24

2006-01-24

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

C297S284600, C417S393000

Reexamination Certificate

active

06988508

ABSTRACT:
The invention relates to a pneumatic open- and closed-loop control apparatus (10) for flows of pressure fluid, having one inlet conduit (14), two outlet conduits (16, 18), and one venting conduit (20), and also having a valve piston (90) mediating between these conduits and mounted in a valve chamber (92), and to a method for open- and closed-loop control of flows of pressure fluid.It is proposed that by means of a pneumatically driven valve piston (92), with a predeterminable time constant, one outlet conduit (16, 18) each of the pneumatic open- and closed-loop control apparatus (10) is connected to the single inlet conduit (14), while the other outlet conduit is simultaneously connected to the venting conduit (20).

REFERENCES:
patent: 2864342 (1958-12-01), Ziegelmeyer
patent: 3167083 (1965-01-01), Nickell
patent: 3949646 (1976-04-01), Taylor
patent: 4172698 (1979-10-01), Hinz
patent: 4655505 (1987-04-01), Kashiwamura et al.
patent: 5529377 (1996-06-01), Miller
patent: 5771514 (1998-06-01), Wilhoit
patent: 19 36 506 (1971-02-01), None
patent: 0 812 743 (2000-12-01), None
patent: 984 624 (1965-03-01), None

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