Ball screw device

Details Ball screw device Ball screw device

2007-12-11

2007-12-11

Joyce, William C. (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S424860

Reexamination Certificate

active

10488601

ABSTRACT:
A ball screw device comprises a screw shaft, a nut externally mounted on the screw shaft, and a multiplicity of balls interposed between thread grooves of the screw shaft and the nut. The screw shaft has a ball circulation groove for coupling downstream and upstream sides of the thread groove so that the balls are returned from the downstream side to the upstream side and thereby circulated in the thread groove of the screw shaft. The ball circulation groove has such a curved shape as to sink radially inward in an intermediate region in a rolling direction of the balls and has a curved shape protruding radially outward in both end regions, and is configured in the manner that the centrodes of the balls rolling in the both end regions and the balls rolling in the thread groove of the screw shaft satisfy predetermined conditions with respect to circulation of the balls.

REFERENCES:
patent: 3244022 (1966-04-01), Wysong, Jr.
patent: 3537666 (1970-11-01), Lewis
patent: 4070921 (1978-01-01), Arnold
patent: 5358265 (1994-10-01), Yaple
patent: 2003/0051569 (2003-03-01), Kapaan et al.
patent: 59-59556 (1984-04-01), None
patent: 2000-18360 (2000-01-01), None

Affiliated with

Also associated with

Rating

Ball screw device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ball screw device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball screw device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3891751