Bearings – Linear bearing – Recirculating
Reexamination Certificate
2005-10-18
2005-10-18
Hannon, Thomas R. (Department: 3682)
Bearings
Linear bearing
Recirculating
C384S520000, C074S424880, C074S424860
Reexamination Certificate
active
06955468
ABSTRACT:
A linear-motion device has: a linear-motion element fitted on a shaft which moves straight along the shaft; a plurality of balls which are retained in a ball groove formed on the inner side of the linear-motion element and roll over between the ball groove and the shaft; a separator interposed between the balls; and, a circulating path formed in the linear-motion element through which the balls are circulated from one end of the ball groove to the other, which is filled with a grease, wherein the separator is a formed product comprising as a resin component a polybutylene naphthalate-based elastomer formed by a hard segment made of a polybutylene naphthalate and a soft segment made of a polycondensate of 2,6-naphthalanedicarboxylic acid with a polytetramethylene ether glycol.
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MatWeb Material Property Data (www.matweb.com), Copyright 1996-2004 by Automation Creations, Inc., pp. 1-7.
Aramaki Hirotoshi
Kato Soichiro
Momono Tatsunobu
Sahara Juntaro
Yabe Toshikazu
Hannon Thomas R.
NSK.Ltd.
Sughrue & Mion, PLLC
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