Patent ID: 7650806
Filing Date: 2010-01-26
Classification: F16H,Y10T

Abstract:
1. A feed screw device comprising: a screw shaft; a nut member threadably engaging an outer peripheral surface of said screw shaft; a lubricant supply device, at least a portion of the lubricant supply device contacting said screw shaft; and a housing member which is secured to said nut member and houses said lubricant supply device, said nut member being positioned outside of said housing member, wherein said housing member is disposed to project from an axial end surface of the nut member and along an outer circumferential surface of the lubricant supply device, said outer circumferential surface extending in a longitudinal direction of said screw shaft, wherein said housing member includes a side that extends radially inward to cover an axial end portion of said lubricant supply device, said axial end portion of said lubricant supply device faces in the longitudinal direction away from said nut member, wherein said lubricant supply device primarily lubricates said screw shaft to facilitate engagement with said nut member.