EP 0481112 A1 19920422 - Method to produce an integral cap-nut.
Title (en)
Method to produce an integral cap-nut.
Title (de)
Verfahren zur Herstellung einer integralen Hutmutter.
Title (fr)
Procédé de production d'un écrou-chapeau intégral.
Publication
Application
Priority
EP 90119908 A 19901017
Abstract (en)
This invention relates to a method of producing an integral cap-cut and in particular to a machine that can precisely cut raw material, machine the head to hexagonal and the shank to cylindrical shape then through squeezing and forming procedures to form the bottom portion of the hexagon in an arc shape and the upper portion with flats. <IMAGE>
IPC 1-7
IPC 8 full level
B21K 1/70 (2006.01)
CPC (source: EP)
B21K 1/704 (2013.01)
Citation (search report)
- [X] US 2832973 A 19580506 - MACDONALD RODERIC A
- [Y] GB 389295 A 19330316 - WILLIAM LEONARD CLOUSE
- [A] DE 2849889 A1 19800529 - MESSERSCHMIDT SEBASTIAN
- [A] US 2160087 A 19390530 - HEYMAN ROSENBERG
- [A] DE 2208528 A1 19730830 - SCHUHL & CO
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 90119908 A 19901017