Valve stem driving apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 6, 1993
Grant Date -
N/A
app pub date -
Jun 5, 1992
filing date -
Jun 5, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A valve stem driving apparatus comprises a valve stem which has first and second ends, the second end being connected to a valve body. The valve stem is engaged with a stem nut. A distance measuring device is provided in an upper cover for the valve stem and measures a distance between the upper cover and the first end of the valve stem, so that wear rate of the valve stem and/or the stem nut is determined.
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