Seal ring shutoff stem tip
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1987
Grant Date -
N/A
app pub date -
Oct 15, 1985
filing date -
Oct 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stem tip seal for a shutoff valve includes a valve member having an axial recess at the outer end that operatively receives a retaining sleeve. The retaining sleeve includes a flange portion engaging a shoulder formed by a circumferential groove in the valve member to effectively limit relative movement between these two components. A tapered surface at one end of the retaining sleeve cooperates with a tapered surface formed on the valve member for confining a seal ring. The seal ring is under compression and biases the retaining sleeve toward a first or outer limit position. Initial contact between the retaining sleeve and valve seat prevents nibbling or chipping of the seal ring during valve closure, and extended contact between the retaining sleeve and valve seat provides support during valve opening to prevent seal blow out.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully