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:
Oct. 19, 2021
Filed:
May. 01, 2019
Nhk Spring Co., Ltd., Yokohama, JP;
Hiroyoshi Uetake, Komagane, JP;
Yukihiro Hayashi, Komagane, JP;
NHK SPRING CO., LTD., Kanagawa, JP;
Abstract
A correction method includes a correction process for correcting warping of a plate-like workpiece including a frame portion and a plurality of flexure elements formed within the frame portion. The correction process includes arranging a first clean sheet on an elastic mat having a flat upper surface, supplying the plate-like workpiece on the first clean sheet, overlaying a second clean sheet from above the first clean sheet and the plate-like workpiece, lowering a pressure roller toward the elastic mat from above the second clean sheet, sandwiching the plate-like workpiece between the elastic mat and the pressure roller, moving the pressure roller along an upper surface of the elastic mat while having the plate-like workpiece sandwiched between the elastic mat and the pressure roller, and taking out the plate-like workpiece from the first clean sheet.