Title:
ROTARY FLUID BEARING COATINGS AND COINING AND PROCESSES FOR MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO2002072908
Kind Code:
A3
Abstract:
A protective coating C is applied to an inner (2) or an outer (4) member of a rotary fluid bearing by sputtering to minimize scuffing, wear and premature failure of the members (2, 4) during starts and stops of the bearing. The coating C may include titanium, tungsten, chromium, amorphous carbon with or without metallic impurities, and hydrogenated amorphous carbon with or without metallic impurities. One of the members (2) is formed in two sections (10, 12) to accommodate assembly of the bearing and these sections abut at end faces (at 16). Features on each end face (at 16) are imparted to the other end face in a compression coining process to facilitate rapid and repeatable alignment of the two sections (10, 12) when separated and rejoined during subsequent manufacturing steps.
Inventors:
KNEPPER RICHARD A
DOLL GARY L
UNDERWOOD THOMAS
DOLL GARY L
UNDERWOOD THOMAS
Application Number:
PCT/US2002/007485
Publication Date:
February 27, 2003
Filing Date:
March 12, 2002
Export Citation:
Assignee:
TIMKEN CO (US)
International Classes:
C23C14/02; C23C14/06; F16C17/10; F16C33/10; F16C33/12; F16D1/112; (IPC1-7): C23C14/02; C23C14/06; F16C33/04; F16D1/112
Domestic Patent References:
| WO1998046894A1 | 1998-10-22 |
Foreign References:
| US5709480A | 1998-01-20 | |||
| US5482602A | 1996-01-09 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10 31 August 1999 (1999-08-31)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10 31 August 1999 (1999-08-31)
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