Patent · US Active

Method for producing a cylindrical hollow body made of aluminum or of an aluminum alloy or of a light metal alloy, cylindrical hollow body, and vehicle transmission

US12420333B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Christian Ruhl · Friedrichshafen, DE
Helmut Boehm · Sankt Ingbert, DE

Key dates

Filing date	Jan 21, 2021
Grant date	Sep 23, 2025
Priority date	—
Expiry date	Nov 5, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H57/032
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for producing a cylindrical hollow body (20) made of aluminum, an aluminum alloy, or a light metal alloy, includes casting a hollow body (20) such that the hollow body (20) has an inner and an outer lateral surface (21, 22) and two axial end faces. The method also includes, during the casting process, making at least one defined notch (35, 35′) into one or more of the inner lateral surface (21), the outer lateral surface (22), and the two axial end faces.

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