Patent · US Expired

Ball screw

US7263908B2 · kind B2 · utility

0Cited by

5References

8Claims

0Family size

Assignee

Ina Schaeffler KG · DE

Inventors

Jurgen Osterlanger · Emskirchen, DE
Ralf Mayer · Weitra, AT
Horst Munck · Herzogenaurach, DE

Key dates

Filing date	Jun 16, 2005
Grant date	Sep 4, 2007
Priority date	—
Expiry date	Jun 16, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19777
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Ball screw, between the spindle nut (1) and threaded spindle (2) of which at least one ball chain (6, 8) formed from balls (9) rolls in each case along a ball channel (5) which is delimited by ball grooves (3, 4) formed on the spindle nut (1) and on the threaded spindle (2), the ball chain (6, 8) being deflected from one end of the ball channel (5) to a start of this ball channel (5) in deflection portions of the ball channel (5), one or more spring elements (11, 17, 27, 35) arranged in the ball chain (6, 8) between balls (9) of the ball chain (6, 8) exerting a pressure force on the balls (9) in the axis of the ball chain (6, 8).

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