The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 10, 2026

Filed:

Jan. 06, 2022
Applicant:

Shanghai Gkn Huayu Driveline Systems Company Limited, Shanghai, CN;

Inventors:

Zhuoxuan Zhu, Shanghai, CN;

Fan Yang, Shanghai, CN;

Xianggang Meng, Shanghai, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 33/48 (2006.01); B29C 33/76 (2006.01); B29L 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 33/485 (2013.01); B29C 33/76 (2013.01); B29L 2023/22 (2013.01);
Abstract

A forming mold for a drum-shaped shaft tube and a demolding method therefor are provided. The forming mold includes a rotating body having a through hole that passes through the center of the body in an axial direction. The body is divided into multiple parts in a longitudinal direction. The parts are combined in a circumferential direction to form the rotating body. A longitudinal maximum material size of each part is less than a minimum diameter of the through hole. Two side edges of a cross section of at least one part are deflected toward adjacent parts with respect to radial lines at which two end points of an outer arc of the cross section are located, and a chord length of the outer arc of the cross section is less than a chord length of an inner arc of the cross section. The body has a forming section.


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Zhu, Zhuoxuan. (2026). Forming mold for drum-shaped shaft tube and demolding method therefor (U.S. Patent No. 12789420). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12789420

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