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.
Patent No.:
Date of Patent:
Nov. 23, 2021
Filed:
Mar. 23, 2018
Nhk Spring Co., Ltd., Kanagawa, JP;
Shigeru Kuroda, Yokohama, JP;
NHK SPRING CO., LTD., Kanagawa, JP;
Abstract
The ball joint manufacturing method for manufacturing a ball joint including a ball stud which includes a substantially spherical metal ball section, and a resin housing rotatable accommodating the ball section of the ball stud, includes: a step of forming the housing to cover an outer periphery of the ball section; an induction heating step of subjecting the ball section to induction heating in a state in which the ball section is accommodated in an accommodation section of the housing until the temperature of the ball section reaches a predetermined target temperature; and a cooling step of cooling the ball section which has been subjected to the induction heating, wherein a torque adjustment step including the induction heating step and the cooling step is repeatedly performed.