Magnetic bearing and an assembly comprising a stator portion and a rotor portion suspended via such a bearing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 11, 1997
Issued Date -
N/A
app pub date -
Jan 18, 1995
filing date -
Jan 19, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The bearing has a fixed portion, and a moving portion, and includes a passive magnetic abutment composed of a fixed element secured to said fixed portion, and of a moving element secured to said moving portion. The bearing further including a passive magnetic centering bearing which is coaxial with said passive abutment, and which is composed of a fixed element secured to the fixed portion, and of a moving element secured to the moving portion, the passive abutment externally surrounding the passive centering bearing, the passive abutment having axial stiffness k.sub.ab, radial stiffness k.sub.rb, a mean radius R.sub.mb, and an inside radius R.sub.ib, and said passive centering bearing having axial stiffness k.sub.ac, radial stiffness k.sub.rc, a mean radius R.sub.mc, and an outside radius R.sub.ec, an air gap e separating the fixed element of said abutment from the moving element thereof and separating the fixed element of the centering bearing from the moving element thereof, these parameters being chosen so as to satisfy the following three relationships simultaneously: 1) .vertline.k.sub.rc .vertline.>.vertline.k.sub.rb .vertline. 2) R.sub.mb >R.sub.mc ##EQU1## 3) R.sub.ib -R.sub.ec .gtoreq.3e.
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