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.

Date of Patent:
Oct. 10, 2017

Filed:

Nov. 20, 2013
Applicant:

Suncall Corporation, Kyoto-shi, JP;

Inventors:

Ryuji Kishihara, Kyoto, JP;

Naoya Wada, Kyoto, JP;

Keiichiro Teratoko, Kyoto, JP;

Assignee:

Suncall Corporation, Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21F 3/08 (2006.01); B21D 11/07 (2006.01); B21F 23/00 (2006.01); B21F 35/02 (2006.01); F16F 1/10 (2006.01);
U.S. Cl.
CPC ...
B21F 3/08 (2013.01); B21D 11/07 (2013.01); B21F 23/00 (2013.01); B21F 35/02 (2013.01); F16F 1/10 (2013.01); F16F 2226/04 (2013.01); F16F 2238/026 (2013.01); Y10T 29/49611 (2015.01);
Abstract

A method includes a spiral forming step causing a substantially linear elongated member, conveyed toward one side in a longitudinal direction of the elongated member by a pair of conveying rollers, to be engaged at one side in a second direction with a pressing member movable in the second direction so that a spiral body including the fixed coil part, the first movable coil part and the second movable coil part is formed from the linear elongated member. The spiral forming step is configured to control the position of the pressing member with respect to the second direction, based on a signal from a rotational speed sensor detecting the rotational speed of the conveying roller, a relationship between a position in the longitudinal direction of the elongated member that is engaged with the pressing member and the position in the circumferential direction after the spiral body is formed.


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