Patent · US Active

Ball nut

US8291786B2 · kind B2 · utility

1Cited by

3References

7Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Dieter Adler · Herzogenaurach, DE
Markus Stiegler · Parsberg, DE
Markus Oswald · Erlangen, DE

Key dates

Filing date	Apr 1, 2010
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Feb 23, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19772
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A ball nut of a ball screw drive, in which the ball nut is mounted on a threaded spindle via balls. The ball nut has on its inner circumference a ball groove wound helically around an axis that extends over at least one winding, and a deflection body, with deflection ends, arranged on a circumferential face of the ball nut. The deflection ends engage into a recess of the ball nut, and adjoin an end and a start of the ball groove. The deflection body is supported on one side in radial directions and on the other side on a machine part. The deflection body is connected at its axial ends to bearings for mounting on the machine part. The bearings, which project circumferentially, engage into the recesses of the ball nut and are arranged with their bearing faces approximately flush with the outer circumferential face of the ball nut.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.