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. 20, 2020
Filed:
Aug. 21, 2018
Nhk Spring Co., Ltd., Yokohama, Kanagawa, JP;
Hideki Okada, Yokohama, JP;
Daisuke Yokota, Yokohama, JP;
Senri Moriyama, Yokohama, JP;
Satoshi Akiyama, Fujisawa, JP;
Masaya Komazaki, Yokohama, JP;
Go Nagayasu, Yokohama, JP;
NHK SPRING CO., LTD., Kanagawa, JP;
Abstract
A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.