EP 1440744 A1 20040728 - Method of making rim having opposite hollow flanges
Title (en)
Method of making rim having opposite hollow flanges
Title (de)
Verfahren zur Herstellung einer gegenüberliegende hohle Felgenhornringe aufweisenden Radfelge
Title (fr)
Procédé de fabrication d'une jante comprenant des anneaux de rive creux
Publication
Application
Priority
JP 2003017272 A 20030127
Abstract (en)
Disclosed is a method of making a rim having hollow flanges formed on its opposite annular edges. It comprises the steps of: cutting an elongated metal band of a fixed width to provide metal strips of a predetermined length; rolling a selected metal strip into a ring; welding the opposite ends of the ring; curling each annular edge of the ring outward; and roll-forming the main annular part to define a well along the center line of the main annular part. The method further comprises the steps of: bending the opposite bead areas toward the center well; closing the gap between each curl edge and the counter bead area; and unbending the opposite bead areas into the final rim shape. <IMAGE> <IMAGE> <IMAGE> <IMAGE> <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
B60B 21/02 (2006.01); B21D 53/30 (2006.01); B60B 21/00 (2006.01)
CPC (source: EP US)
B21D 53/30 (2013.01 - EP US); Y10T 29/49531 (2015.01 - EP US)
Citation (search report)
- [A] US 4266417 A 19810512 - IMAMURA KAZUO, et al
- [A] DE 3344425 A1 19840614 - NISSAN MOTOR [JP]
- [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 09 31 October 1995 (1995-10-31)
- [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 256 (M - 179) 15 December 1982 (1982-12-15)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1440744 A1 20040728; CN 1517239 A 20040804; JP 2004224292 A 20040812; US 2004143968 A1 20040729
DOCDB simple family (application)
EP 03018771 A 20030827; CN 03124969 A 20030923; JP 2003017272 A 20030127; US 64747303 A 20030826