EP 0378273 A3 19910206 - ROTARY ANODE X-RAY TUBE WITH A GLIDING BEARING, PARTICULARLY A SPIRALLY GROOVED BEARING
Title (en)
ROTARY ANODE X-RAY TUBE WITH A GLIDING BEARING, PARTICULARLY A SPIRALLY GROOVED BEARING
Publication
Application
Priority
DE 3900729 A 19890112
Abstract (en)
[origin: JPH02227947A] PURPOSE: To prevent damage of a bearing by forming a distance in a surface of bearing parts opposed to each other in a boundary region between bearings with volute groove so as to be a multiple of this distance in a region of the bearing itself with volute groove. CONSTITUTION: A bearing with volute groove 11a, 11b, 14a has in common a rotary part and stationary part 9, 8, for decoupling the bearing with volute groove 11b, 14a adjacent by space, a distance between surfaces of a rotary bearing part and/or stationary bearing parts 8, 9 opposed to each in a boundary region between the bearings with volute groove is formed so as to be a multiple of this distance in a region of the bearing with volute groove. Accordingly, a lubricant provided in this boundary region decouples these two bearings 11b, 14a to each other, small lubricating action is only generated. In this way, damage of the bearing 11a, 11b, 14a is prevented.
IPC 1-7
IPC 8 full level
F16C 33/10 (2006.01); H01J 35/10 (2006.01)
CPC (source: EP US)
H01J 35/104 (2019.04 - EP US); H01J 2235/106 (2013.01 - EP US); H01J 2235/1066 (2013.01 - EP US)
Citation (search report)
- [Y] EP 0141475 A1 19850515 - PHILIPS NV [NL]
- [Y] EP 0117873 A1 19840912 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] US 4573807 A 19860304 - ASADA TAKAFUMI [JP], et al
- [A] US 3399000 A 19680827 - GERRIT REMMERS
- [A] PATENT ABSTRACTS OF JAPAN vol. 8, no. 100 (M-295)(1537) 11 Mai 1984, & JP-A-59 13113 (NIPPON SEIKO K.K.) 23 Januar 1984,
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0378273 A2 19900718; EP 0378273 A3 19910206; EP 0378273 B1 19950531; DE 3900729 A1 19900719; DE 59009164 D1 19950706; JP 2851097 B2 19990127; JP H02227947 A 19900911; US 5068885 A 19911126
DOCDB simple family (application)
EP 90200048 A 19900109; DE 3900729 A 19890112; DE 59009164 T 19900109; JP 240290 A 19900109; US 45991490 A 19900102