Patent · US Active

Screw element of a ball screw mechanism

US11717918B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Yannick Vanco · Strasbourg, FR
Thierry Leobold · Wœrth, FR
Dieter Eckert · Fürth, DE
Stefan Grimm · Wintersheim, DE
Daniel Hell · Niedermodern, FR

Key dates

Filing date	May 3, 2018
Grant date	Aug 8, 2023
Priority date	—
Expiry date	Dec 21, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2025/249
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A screw element of a ball screw mechanism includes a lead screw which, at an axial end, is joined to a rod element using a friction welding process. In order to improve the friction-welded joint, prior to the friction welding process, the lead screw has a circumferential groove on the end face facing the rod element.

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