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Patent Searching and Data


Title:
WASHER PRODUCTION METHOD AND WASHER
Document Type and Number:
WIPO Patent Application WO/2017/069229
Kind Code:
A1
Abstract:
Provided is a washer production method that enables improving material yield rate. This method comprises: a preparation step for preparing a long member N1 provided with upper-side ridges 20 and lower-side ridges 40 that are formed in the upper-side surface and/or the lower-side surface, and provided with upper-side troughs 30 and lower-side troughs 50 that are formed continuously leftward and rightward to the upper-side ridges 20 and the lower-side ridges 40, wherein protrusions 33, 53 are formed in the upper-side troughs 30 and the lower-side troughs 50; and a transformation step for deforming the long member N1 such that the upper-side surface and the lower-side surface have a circular-arc shape as viewed from an anterior direction thereof.

Inventors:
OCHIAI Hirokazu (65 Midorigaoka 3-chome, Toyota-shi Aichi, 02, 〒4718502, JP)
Application Number:
JP2016/081228
Publication Date:
April 27, 2017
Filing Date:
October 21, 2016
Export Citation:
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Assignee:
TAIHO KOGYO CO., LTD. (65 Midorigaoka 3-chome, Toyota-shi Aichi, 02, 〒4718502, JP)
International Classes:
B21D53/20; B21D11/20; F16C17/04; F16C33/14
Foreign References:
JPS51141767A1976-12-06
JP2015117817A2015-06-25
JPS4967301A1974-06-29
JPS5391063A1978-08-10
Other References:
See also references of EP 3366382A4
Attorney, Agent or Firm:
NAGATA Toyohiko et al. (Santo International Patent And Trademark Office, Tenmabashi Yachiyo Bldg. 8F-A 1-6-4, Tanimachi, Chuo-ku, Osaka-sh, Osaka 12, 〒5400012, JP)
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