EP0181950A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Thrust bearing
Assignee: Ebara Corp
•
Filing: 1984-11-15
•
Granted: —
•
Expires: 2004-11-15
Abstract
Abstract A novel thrust bearing is provided in which a spiral element (10) of a disc shape is loosely interposed between a pair of flat elements (12, 13) one of which (12) is rotatable and the other of which (13) is stationary, the spiral element (10) having a spiral groove pattern on each of the opposite surfaces of the disc in such a manner that the patterns on both of the surfaces are reverse in relation to each other in their spiral direction.
Inventors
- 👤 Shotaro Mizobuchi
- 👤 Katsumi Sasaki
- 👤 Yoshikazu Kimura
- 👤 Kazuyuki Kasahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/107; F16C17/00; F16C17/04; F16C17/045; F16C17/12; F16C17/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A thrust bearing comprising: a pair of opposing flat elements, one of which is secured to a rotatable shaft and the other one of which is held stationary; and a spiral element made of hard material in a disc form and interposed between said pair of flat elements, said spiral element being formed with a spiral groove pattern on each of the opposite surfaces thereof so that the spiral direction of the pattern on one side surface is reverse to that on the other side surface.
Claim 2
Dependent Claim
86 words
A thrust bearing comprising: a pair of opposing flat elements, one of which is secured to a rotatable shaft and the other one of which is held stationary; and a spiral element made of hard material in a disc form and interposed between said pair of flat elements, said spiral element being formed with a spiral groove pattern on each of the opposite surfaces thereof so that the spiral direction of the pattern on one side surface is reverse to that on the other side surface.
Claim 3
Dependent Claim
16 words
A thrust bearing according to Claim 1 wherein said spiral element is made of sintered ceramics.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.