|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||310/905 ; 310/90|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 27 인용 특허 : 0|
A back-up bearing (50, FIG. 1) is provided for a magnetic journal or thrust bearing by a source of pressurized fluid 52 (such as gas), channels 51 supplying the fluid to the suspension gap 30 between moving bearing armature 25 and stationary armature pole faces 281, 291, and magnet control means 56 responsive to a decrease in gap width at any point below an acceptable minimum to supply the fluid by way of the channel(s) to the gap to form a hydrostatic bearing between stationary and movable armatures to aid or replace the magnetic bearing support. In a j...
A magnetic bearing arrangement for a rotatable shaft, including movable armature means movable with the shaft, stationary armature means forming with the movable armature means a magnetic circuit including a suspension gap between them, and back-up bearing means, the back-up bearing means including fluid channels communicating with the suspension gap, a source of pressurised fluid and back-up control means responsive to a detected inability of the magnetic bearing arrangement to suspend the shaft within a predetermined range of operational shaft position...