Global Patent Index - EP 1001860 A1

EP 1001860 A1 20000524 - FLAT THREAD ROLLING DIE FOR POINTED SCREWS

Title (en)

FLAT THREAD ROLLING DIE FOR POINTED SCREWS

Title (de)

FLACHE GEWINDEWALZBACKE ZUR HERSTELLUNG SPITZER SCHRAUBEN

Title (fr)

MATRICE PLATE DE FILETAGE PAR ROULAGE POUR LA FABRICATION DE VIS POINTUES

Publication

EP 1001860 A1 (EN)

Application

EP 98939878 A

Priority

  • US 9816325 W
  • US 5517897 P

Abstract (en)

[origin: WO9907496A1] A pair of thread rolling dies (10, 12) for manufacturing self-piercing, self-tapping or gimlet-type screws (21) employ an off center rise and asymmetrical tip formation surfaces (54, 64) to enhance the slug removal at the tip (28) of the screw.

IPC 1-7

B21H 3/06

IPC 8 full level

B21H 3/06 (2006.01)

CPC (source: EP)

B21H 3/06 (2013.01)

Citation (search report)

See references of WO 9907496A1

Designated contracting state (EPC)

DE ES FR GB IE IT

DOCDB simple family (publication)

WO 9907496 A1 19990218; AU 738734 B2 20010927; AU 8824198 A 19990301; BR 9811134 A 20000718; CA 2296998 A1 19990218; CN 1265613 A 20000906; EP 1001860 A1 20000524; TR 200000329 T2 20001023; TW 385264 B 20000321

DOCDB simple family (application)

US 9816325 W 19980806; AU 8824198 A 19980806; BR 9811134 A 19980806; CA 2296998 A 19980806; CN 98807828 A 19980806; EP 98939878 A 19980806; TR 200000329 T 19980806; TW 87113059 A 19980807