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:
Mar. 17, 2020
Filed:
Apr. 15, 2019
Sankei Giken Kogyo Co., Ltd., Isesaki, JP;
Ryota Noguchi, Isesaki, JP;
Sankei Giken Kogyo Co., Ltd., Isesaki, JP;
Abstract
A method for manufacturing a door sash formed from a single plate material includes: a roll-forming step of providing a gap portion between the plate materials forming a stepped section and roll-forming a periphery of an end portion of a plate material extending from a tubular section, so as to come into contact along the plate material forming the stepped section; a press working step of pressing the end portion of the plate material to a position where the end portion does not protrude further toward the side on which a weather strip is fitted than a surface of an overlapping section and a surface of the tubular section on the side on which the weather strip is fitted, while crushing the gap portion; and a welding step of continuously laser-welding the overlapping section along a longitudinal direction of the door sash.