Fluid measurement of dielectric property change in hydraulic fluid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 30, 1999
Grant Date -
N/A
app pub date -
Feb 13, 1997
filing date -
Dec 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The identification of and compensation for changes in the dielectric properties of a hydraulic fluid in hydraulic apparatus is achieved by continuously sampling a hydraulic fluid in a resonant chamber with a central conductor that is both inductively and capacitively coupled to an oscillator. The output frequency changes of the oscillator is an indicator of changes of the dielectric properties of the hydraulic fluid and their magnitude. The invention is of particular value in hydraulic cylinder piston position determining systems.
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