Screw device having lubricant applying portion

Details Screw device having lubricant applying portion Screw device having lubricant applying portion

2006-02-21

2006-02-21

Fenstermacher, David (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

C074S089230, C074S089000, C074S424710

Reexamination Certificate

active

07000493

ABSTRACT:
A screw device having a lubricant applying structure comprises a screw shaft provided with a spiral ball rolling groove, a nut provided with a loaded ball rolling groove having a spiral shape corresponding to the spiral ball rolling groove formed to the screw shaft, a number of balls disposed in a loaded rolling passage formed by the ball rolling groove and the loaded ball groove, a return member provided for the nut and arranged so as to connect one and another end portions of the loaded rolling passage so that the balls rolling the loaded rolling passage circulate, and a lubricant applying portion mounted to the return member so as to apply a lubricant. The lubricant applying portion is arranged inside the return member provided for the nut.

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