Variable inductance displacement measuring device with slidable metal sleeve and ferrite bead core
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 23, 1991
Grant Date -
N/A
app pub date -
Jun 26, 1989
filing date -
Oct 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A displacement measuring apparatus including a variable inductance coil formed of a pair of coils, on a core of predetermined length made of a material having high magnetic permeability. The pair of coils are disposed on a core adjacent to each other in their axial directions and are covered by a metal sleeve of substantially the same length of one of the coils. A detecting circuit is provided including a high frequency oscillator and a rectifier and is connected to the variable inductance coil, wherein when the metal sleeve is slidably moved, the detecting circuit generates a direct current voltage in correspondence with the displacement of the metal sleeve.
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