Patent · US Active

Ball-screw nut with over-molded shell

US11530740B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Renato De Paula · Sugar Land, US
Mario Kreutzer · Sonneberg, DE
Dieter Adler · Herzogenaurach, DE
Michael Zinnecker · Berkley, US

Key dates

Filing date	Sep 6, 2019
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Oct 27, 2040

Classification

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

Abstract

A ball-screw actuator includes a screw nut having a metal core and an over-molded plastic outer shell. The plastic outer shell includes features which would be expensive to manufacture in a single piece metal screw nut, such as an anti-rotation feature, an axial position control feature, and a lateral position control feature. The anti-rotation feature may take the form of an axial groove or of an axial ridge.

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