Title:
COMPACT CIRCULAR LINKAGE FOR A PUSHING ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2019/104066
Kind Code:
A8
Abstract:
A compact unitized mechanical linkage, which can be handled as a single piece within a valve top works, transmits force and motion of a piezoelectric actuator stack to a moveable element in a control valve. The linkage has few parts and all may be made at low cost. The linkage assembly comprises: a thrust plate having a thrust plate body and including a plurality of thru-slots defined in the thrust plate body and that extend axially through the thrust plate body; a lifting housing to engage an expanding valve actuator, the lifting housing including a plurality of prongs depending from the lifting housing and extending through at least one of the plurality of thru-slots; a ring nut secured to a valve housing and surrounding the plurality of prongs, the ring nut securing the thrust plate to the valve housing; and a lifting element secured to the plurality of prongs, the lifting element securable to the movable element.
Inventors:
VU KIM (US)
Application Number:
PCT/US2018/062068
Publication Date:
July 25, 2019
Filing Date:
November 20, 2018
Export Citation:
Assignee:
VISTADELTEK LLC (US)
International Classes:
F16K7/12; F16K27/02; F16K31/00
Attorney, Agent or Firm:
SKRIVANEK, Robert, A. et al. (US)
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