Machine element or mechanism – Gearing – Directly cooperating gears
Reexamination Certificate
2006-02-14
2006-02-14
Fenstermacher, David M. (Department: 3682)
Machine element or mechanism
Gearing
Directly cooperating gears
C384S051000
Reexamination Certificate
active
06997078
ABSTRACT:
A ball screw apparatus which can suppress retaining pieces from contacting a wall of a ball rolling path or ball circulating path, and suppress the retaining pieces between the balls from falling down, so that such a ball screw apparatus can be improved in noise reduction, operability and endurance. The retaining piece is rounded at an edge portion opposite to the ball, such that a radius of curvature of the edge portion is defined to be 0.05 mm to 1 mm, and the outer diameter of the retaining piece is in a range of 0.60 times or more to 0.85 times or less of the diameter of the ball.
REFERENCES:
patent: 6095009 (2000-08-01), Takagi
patent: 6435720 (2002-08-01), Yabe et al.
patent: 6443620 (2002-09-01), Chiu et al.
patent: 2001/0037699 (2001-11-01), Abe et al.
patent: 2003/0039414 (2003-02-01), Niwa et al.
patent: 2003/0194160 (2003-10-01), Yabe et al.
patent: 2003/0221502 (2003-12-01), Okita et al.
patent: 2004/0020317 (2004-02-01), Yamamoto
patent: 2004/0047525 (2004-03-01), Kasuga et al.
patent: 199 25 040 (1999-12-01), None
patent: 100 52 204 (2001-07-01), None
patent: 101 10 220 (2001-09-01), None
patent: 2001-21018 (2001-01-01), None
Patent Abstracts of Japan, vol. 2000, No. 2, Publication No. 11315835.
Hiroki Yamaguchi et al., “Development of NSK S1 Series, Ball Screws and Linear Guides”, Motion and Control No. 11, Oct. 2001 pp. 27-34.
Maruyama Daisuke
Minakuchi Junji
Okita Shigeru
Fenstermacher David M.
NSK Ltd.
Sughrue & Mion, PLLC
LandOfFree
Ball screw apparatus 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 apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball screw apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3630438