Patent · US Active

Coil and method and tool for producing coil

US12362637B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Franz-Josef Wöstmann · Bremen, DE
Michael Heuser · Lake Forest, US
Matthias Busse · Bremen, DE
Lukas Stumm · Bremen, DE

Key dates

Filing date	Sep 19, 2019
Grant date	Jul 15, 2025
Priority date	—
Expiry date	Apr 26, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01F41/077
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for producing a coil includes casting; a semi-finished product in a cavity of a casting tool and the coil is formed following a demolding of the semi-finished product by shaping this semi-finished product, wherein the form of the semi-finished product may be derived from a shape of the finished coil by stretching along a longitudinal axis of the coil and/or by bending this longitudinal axis, and wherein the semi-finished product, during the shaping, is bent and compressed so that windings of the coil already present in the semi-finished product are brought closer to one another at least in some regions and are brought into an arrangement along the longitudinal axis of the finished coil, wherein the product, whilst being shaped, is twisted or bent by no more than a right angle over the course of each individual turn.

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