Recirculating ball screw and nut drive

Details Recirculating ball screw and nut drive Recirculating ball screw and nut drive

2007-03-22

2009-11-10

Ridley, Richard W L (Department: 3656)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S424830

Reexamination Certificate

active

07614318

ABSTRACT:
A recirculating ball screw and nut drive including a spindle, a spindle nut guided on the spindle, balls guided between the spindle and the spindle nut, in a working passage defined by grooves of the spindle and spindle nut, and deflection pieces arranged on both ends of the spindle nut to divert the balls out of the working passage into a return passage accommodated in the spindle nut, and to divert the balls out of the return passage into the working passage accommodated in the spindle nut, where the ball deflection pieces are annular and composed of at least two circular-ring sectors.

REFERENCES:
patent: 4286793 (1981-09-01), Ploss et al.
patent: 4864883 (1989-09-01), Mayfield
patent: 5664459 (1997-09-01), Muhleck et al.
patent: 6938510 (2005-09-01), Yabe
patent: 7350434 (2008-04-01), Nishimura et al.
patent: 2007/0186708 (2007-08-01), Liao et al.
patent: 60301517 (2006-01-01), None
patent: 957330 (1964-05-01), None

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