Bearings – Linear bearing – Recirculating
Reexamination Certificate
2005-02-08
2005-02-08
Hannon, Thomas R. (Department: 3682)
Bearings
Linear bearing
Recirculating
C384S015000
Reexamination Certificate
active
06851857
ABSTRACT:
A linear motion guide unit makes it possible to mount precisely a track rail to a machine bed and also reduce sliding resistance that might be encountered when a slider moves over the track rail. On a sidewise outside surface of a side wall of the track rail there is made a bulged portion that spreads in width H from a lower surface of the side wall up to a level above the center of gravity G of the track rail. The bulged portion has a sidewise outermost surface that is processed to provide a surface of reference, which can match a mating surface of reference made on the fixed bed. The slider has an upper seal to close a clearance left between a fore-and-aft side of the slider and a lengthwise inside surface of any one of the side walls of the track rail, while a recess is cut in the inside surface of the side wall in a way extending lengthwise of the track rail so as to allow the upper seal to come in sliding contact at a lip thereof with the recess.
REFERENCES:
patent: 5374126 (1994-12-01), Akasako et al.
patent: 6309107 (2001-10-01), Ueki et al.
patent: 11-30234 (1999-02-01), None
patent: 2001-12465 (2001-01-01), None
Browdy and Neimark , P.L.L.C.
Nippon Thompson Co. Ltd.
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