Patent · US Active

Valve actuator with vent

US8408245B2 · kind B2 · utility

16Cited by

2References

18Claims

0Family size

Assignee

SWAGELOK COMPANY · US

Inventors

Joel F. Feldman · Solon, US
Peter Sulcs · Chagrin Falls, US
Daniel E. Zeiler · Mentor, US
Charles W. Hayes, II · Wickliffe, US
David Hasak · Greenville, US
Yancy J. Waller · Painesville, US

Key dates

Filing date	Jul 15, 2011
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Jul 15, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87169
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve actuator includes a valve body, a valve member comprising a shaft, and a piston connected to the shaft, with the valve member being movable by operation of the piston. The valve body comprises a valve chamber that provides fluid communication between an inlet passage and an outlet passage. The shaft is disposed in and extends through a sealed chamber, the sealed chamber being sealed at one end from the valve chamber and at another end from a piston chamber, and a vent that extends from the sealed chamber to an external surface, wherein the shaft extends axially in both directions past sealed ends of the sealed chamber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.