EP 1237667 A1 20020911 - PRECISE COLUMNAR MEMBER AND METHOD OF PRODUCING THE SAME
Title (en)
PRECISE COLUMNAR MEMBER AND METHOD OF PRODUCING THE SAME
Title (de)
PRÄZISES SÄULENFÖRMIGES BAUELEMENT UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
ELEMENT COLONNAIRE PRECIS ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- JP 0008694 W 20001208
- JP 35266399 A 19991213
Abstract (en)
[origin: US2002162372A1] The present invention relates to a metallic, precise columnar member having an outer diameter with high accuracy, wherein the columnar member comprises a plurality of flattened thread ridges having a predetermined outer diameter provided on the surface of a metallic columnar blank in an axial direction. The method of the present invention comprises the steps of using rolling to form a plurality of thread ridges on the surface thereof and using rolling or drawing to make the tops of the thread ridges flat.
IPC 1-7
IPC 8 full level
B21H 3/00 (2006.01); B21H 3/02 (2006.01); B21H 7/18 (2006.01)
CPC (source: EP US)
Citation (search report)
See references of WO 0141952A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 2002162372 A1 20021107; EP 1237667 A1 20020911; JP 2001170732 A 20010626; WO 0141952 A1 20010614
DOCDB simple family (application)
US 12939602 A 20020506; EP 00980001 A 20001208; JP 0008694 W 20001208; JP 35266399 A 19991213