Seal Element Having Contoured V-Spring
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United States of America Patent
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Issued Date -
Sep 24, 2015
app pub date -
Mar 18, 2014
filing date -
Mar 18, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A gate valve for use in oil field applications having a seal assembly made up of an elastomeric case and a spring in the case having a V-shaped cross section. The spring has legs that depend from one another, and free ends of the legs that are contoured towards one another to define a rounded surface on outer surfaces of the legs. The rounded surface reduces stress contact between the spring and the case, thereby prolonging seal assembly life. The seal assembly can be placed between a stem in the valve and a gland packing. Other seal assembly locations include between a seat ring and counterbore in the valve body.
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