Control valve

Details Control valve Control valve

1991-03-04

1992-03-10

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Having element dimensionally responsive to field

251 86, F16K 3106

Patent

active

050944304

ABSTRACT:
A control valve, in which a valve body opening and closing a valve mouth is driven by a strain force of a piezostack, characterized in that an upper fixed portion of said piezostack is supported by a ring-like tapered surface or a spherical surface and a lower movable portion of the piezostack is combined with a valve body through a spherical bearing.
The strain output can be surely transmitted to said valve body by holding the piezostack so that no movement other than a strain resulting from the application of voltage may be produced.

REFERENCES:
patent: 4529164 (1985-07-01), Igashira et al.
patent: 4628330 (1986-12-01), Suga et al.
patent: 4907748 (1990-03-01), Gardner et al.

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