METHOD OF PRODUCING RUN-FLAT TIRE SUPPORTING BODY, RUN-FLAT TIRE SUPPORTING BODY, AND RUN-FLAT PNEUMATIC TIRE

Title:

METHOD OF PRODUCING RUN-FLAT TIRE SUPPORTING BODY, RUN-FLAT TIRE SUPPORTING BODY, AND RUN-FLAT PNEUMATIC TIRE

Document Type and Number:

WIPO Patent Application WO/2005/046976

Kind Code:

A1

Abstract:

A method of producing a supporting body having no joint, a supporting body having no joint, and a run-flat pneumatic tire having the supporting body. A hollow-cylindrical member (36) having a bottom section (36B) is formed of a metal sheet by deep drawing. The opening section (36D) side and bottom section (36B) side of the hollow-cylindrical member (36) are removed, then the hollow-cylindrical member (36) is curved into a shape where the intermediate section in the axial direction of the hollow-cylindrical member (36) has a projection section (26A) projecting radially outward, and as a result a shell (26) is formed. Thus, the shell (26) having no joint can be obtained.

Inventors:

NAKAZAWA KAZUMA (JP)
SUGIO DAISUKE (JP)
INO FUMITAKA (JP)
IZUMOTO RYUJI (JP)
IWASAKI SHINICHI (JP)
HIRATA NARUKUNI (JP)

Application Number:

PCT/JP2004/016821

Publication Date:

May 26, 2005

Filing Date:

November 12, 2004

Export Citation:

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Assignee:

BRIDGEST0NE CORP (JP)
NAKAZAWA KAZUMA (JP)
SUGIO DAISUKE (JP)
INO FUMITAKA (JP)
IZUMOTO RYUJI (JP)
IWASAKI SHINICHI (JP)
HIRATA NARUKUNI (JP)

International Classes:

B21D26/041; B21D26/047; B21D53/26; B60C17/06; (IPC1-7): B29D30/06; B21D15/10; B21D26/02; B21D51/12; B21D53/26; B60C17/04; B60C17/06

Foreign References:

JPH05504726A	1993-07-22
JPS52130465A	1977-11-01
JPS5326253A	1978-03-10
JP2004001022A	2004-01-08
JP2002234304A	2002-08-20
JP2001519279A	2001-10-23
JPH10297226A	1998-11-10
JP2004148707A	2004-05-27
JP2004034904A	2004-02-05
JP2004160542A	2004-06-10

Other References: