Thomas Brian Summers

US Patent:

20140130908, May 15, 2014

Filed:

Nov 13, 2012

Appl. No.:

13/675721

Inventors:

DONALD PRNCE - Mckenzie TN, US
Thomas Summers - Mckenzie TN, US

International Classification:

F16K 17/04
F16K 17/06

US Classification:

137537, 137542

Abstract:

A valve having secondary spring force containment includes a valve body featuring an opening with a valve closure member sized to close the opening. A stem has a first end connected to the valve closure member. A proximal spring seat is positioned adjacent to the valve body, A distal spring seat is mounted on the second end of the stem. A spring is positioned between the proximal and distal spring seats so that the valve closure member is urged into a position where the valve body opening is closed. A hollow rod is attached between the proximal and distal spring seats to provide secondary spring force containment with the stem passing through the hollow rod.