Patent · US Expired

Ball screw drive

US7357048B2 · kind B2 · utility

3Cited by

7References

7Claims

0Family size

Assignee

Ina Schaeffler KG · DE

Inventors

Gunter Hartig
Jurgen Osterlanger · Emskirchen, DE
Dieter Adler · Herzogenaurach, DE
Manfred Kraus · Kehl, DE
Ralf Mayer · Weitra, AT
Jorg Wagner · Königsee, DE
Horst Munck · Herzogenaurach, DE

Key dates

Filing date	May 5, 2005
Grant date	Apr 15, 2008
Priority date	—
Expiry date	May 5, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19753
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (8) for balls (5), an external deflector (6, 24) arranged outside of the spindle nut (2) connecting the two ends of the load-bearing channel (8) endlessly to each other for deflecting the balls (5) from one of the two ends of the load-bearing channel (8) to the other of the two ends of the load-bearing channel (8), a drive pinion for driving the spindle nut (2) being arranged on the spindle nut (2), wherein the external deflector (6, 24) is arranged at least substantially within an axial length of the drive pinion.

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