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US 2001/0010176 A1Published application
Feed screw device
AssigneeNsk Ltd.
InventorsToru Tsukada, Soichiro Kato
Life of this patent
Estimating the term…
Abstract
A ring-like lubricant supply device 6 is fitted into a recess 4 of a nut member 2. The lubricant supply device 6 contains a lubricant and is formed in an outer peripheral surface with notches 7. Tubular members 8 each having an outer diameter larger than the diameter of the notch 7 are inserted into the notches, pushing and widening the notches 7 in a circumferential direction. One end of the tubular member 8 is fitted into a recess 9b of a retaining ring 9 and the retaining ring 9 is fixed to a nut member 2.
Claims16
A feed screw device comprising:
- a screw shaft;
- a nut member threadably engaging an outer periphery of the screw shaft;
- a lubricant supply device fixed to said nut member, said lubricant supply device coming in contact with the outer peripheral surface of said screw shaft and having a predetermined elasticity;
- and
- means for deforming at least the outer periphery of said lubricant supply device in the circumferential direction.
2 more elements
A feed screw device comprising:
- a screw shaft;
- a screw nut threadably engaging an outer periphery of said screw shaft;
- and
- a lubricant supply device disposed at at least one end of said screw nut in the axial direction of said screw shaft for sealing the gap opening between the screw nut and the screw shaft, and said lubricant supply member being made of a lubricant-containing polymer member,
- in which said lubricant-containing polymer member is formed with a lubricant reserve portion.
2 more elements
Dependencies are inferred from the claim text.