Global Patent Index - EP 0885549 A4

EP 0885549 A4 2000-12-20 - PREPARATION OF VEHICLE FRAME COMPONENTS FOR MOLECULAR BONDING USING MAGNETIC IMPULSE WELDING TECHNIQUES

Title (en)

PREPARATION OF VEHICLE FRAME COMPONENTS FOR MOLECULAR BONDING USING MAGNETIC IMPULSE WELDING TECHNIQUES

Title (de)

VORBEREITEN VON FAHRZEUGRAHMENBAUTEILEN AUF EINE MOLEKULARVERBINDUNG DURCH IMPULSMAGNETSCHWEISSTECHNIK

Title (fr)

PREPARATION DE COMPOSANTS DE CHASSIS DE VEHICULE A UNE LIAISON MOLECULAIRE SELON DES TECHNIQUES DE SOUDAGE PAR IMPULSIONS MAGNETIQUES

Publication

EP 0885549 A4 (EN)

Application

EP 96923308 A

Priority

  • US 9610371 W
  • US 49124695 A

Abstract (en)

[origin: WO9700595A1] A method and apparatus for joining metallic vehicle frame components using magnetic impulse welding techniques is disclosed. In a first embodiment, an overlap joint is formed by the joinder of two individual open channel side rail sections (12, 13) to form a portion of a vehicle frame side rail. The first section (12) formed slightly smaller than the second section (13) is disposed telescopically therein with clearance. The adjacent surfaces of the sections (12, 13) are plasma or flame sprayed with a neutral interface metal. An electromagnetic coil (50) generates a magnetic field which causes the sections (12, 13) to move toward one another at a high velocity. The high velocity impact and the large pressures cause the two sections (12, 13) to weld. In a second embodiment, a pair of closed channel structural members are formed using hydroforming techniques. The end portions of the hydroformed members are then disposed concentrically within an electromagnetic coil which causes the end portions to move toward one another so as to weld.

IPC 1-7 (main, further and additional classification)

H05B 6/10; B23K 13/01; B23K 20/06

IPC 8 full level (invention and additional information)

B23K 20/06 (2006.01); B62D 21/02 (2006.01); B62D 23/00 (2006.01); B62D 27/02 (2006.01); B62D 29/00 (2006.01); H05B 6/10 (2006.01)

CPC (invention and additional information)

B62D 29/008 (2013.01); B23K 20/06 (2013.01); B62D 21/02 (2013.01); B62D 23/005 (2013.01); B62D 27/02 (2013.01)

Citation (search report)

  • No further relevant documents disclosed
  • See also references of WO 9700595A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9700595 A1 19970103; AU 6385696 A 19970115; BR 9611415 A 19990223; EP 0885549 A1 19981223; EP 0885549 A4 20001220

INPADOC legal status


2004-07-07 [R18D] EP-APPLICATION DEEMED TO BE WITHDRAWN: (CORRECTION)

- Effective date: 20040103

2004-01-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031114

2000-12-20 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20001107

2000-12-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB

2000-12-20 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 05B 6/10 A, 7B 23K 13/01 B, 7B 23K 20/06 B

1998-12-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980109

1998-12-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB