GRIP RING METAL WIRE MATERIAL, METHOD OF PRODUCING SUCH GRIP RING METAL WIRE MATERIAL AND DEVICE FOR PRODUCING SUCH GRIP RING METAL WIRE MATERIAL, AND METHOD OF PRODUCING PIPE COUPLING GRIP RING USING METAL WIRE MATERIAL, DEVICE FOR PRODUCING SUCH PIPE COUPLING GRIP RING, AND PIPE COUPLING GRIP RING

Title:

Document Type and Number:

WIPO Patent Application WO/2003/004195

Kind Code:

A1

Abstract:

A metal wire material suitable for use as a grip ring material, having good surface properties and produced at low cost&semi a producing method therefor&semi and a producing device therefor. For this purpose, a metal wire material (34) is passed through a shape correction unit (14) to have its coil−like winding−produced deformation removed. Further, while preventing the downward or upward turn of the metal wire material (34) by upper and lower hold rollers (19, 20, and 26, 27), a continuous wedge−like groove is formed in the metal wire material (34) by a first cutting roller (21) and a second cutting roller (23).

Inventors:

SUMIMOTO SHIN (JP)

Application Number:

PCT/JP2002/006628

Publication Date:

January 16, 2003

Filing Date:

July 01, 2002

Export Citation:

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Assignee:

KANAI HIROAKI (JP)
SUMIMOTO SHIN (JP)

International Classes:

B21C37/04; B21F1/02; B21F37/00; B21F37/02; B21F99/00; B23P15/00; F16L21/08; (IPC1-7): B21F37/00; F16L21/08

Foreign References:

JP2001124263A	2001-05-11
US5582051A	1996-12-10
JPS6127533U	1986-02-19

Other References: