Linear motion device

Details Linear motion device Linear motion device

2007-10-09

2007-10-09

Joyce, William C. (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S424820, C074S424880, C384S013000, C384S045000

Reexamination Certificate

active

10345362

ABSTRACT:
A linear motion device has: a linear motion body externally fitted onto a shaft and making a relative linear motion along the shaft; a plurality of balls retained in a rolling element groove formed in an inner surface of the linear motion body, and rolling between the rolling element groove and the shaft; separators interposed among the balls; and a circulating path formed in the linear motion body and for circulating the balls from one end side of the rolling element groove to the other end side thereof; wherein the linear motion device is charged with grease containing base oil which is 220-395 in worked penetration defined by JIS K2220 and 50-500 mm2/s in kinematic viscosity at 40° C.

REFERENCES:
patent: 5714444 (1998-02-01), Yokouchi et al.
patent: 6176149 (2001-01-01), Misu
patent: 2001-389586 (1921-12-01), None
patent: 09-217745 (1997-08-01), None
patent: 2000-120825 (2000-04-01), None
patent: 2000-205280 (2000-07-01), None
patent: 2001-21018 (2001-01-01), None
patent: 2001-59094 (2001-03-01), None

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