Electric heating – Metal heating – For bonding with pressure
Reexamination Certificate
2007-03-07
2010-12-14
Ralis, Stephen J (Department: 3742)
Electric heating
Metal heating
For bonding with pressure
C219S086100, C219S090000
Reexamination Certificate
active
07851723
ABSTRACT:
A spot welding head includes an electrical conductor guided into a tubular sheath whose ends are rigidly connected to rear ends of supporting bodies of several electrodes. The sheath defines a substantially stiff loop portion configured and arranged so as to be substantially parallel and to face an annular path defined by the electrodes and the supporting bodies, in such a way that two magnetic fields, one generated by electromagnetic induction caused by electric current flowing through the electric conductor placed into the loop-shaped sheath, and the other generated by electromagnetic induction caused by electric current flowing through the electrodes and the supporting bodies thereof, substantially cancel each other out or generate an overall magnetic field which is located forward of the rear end of the welding head or forward of the operator's body.
REFERENCES:
patent: 2491169 (1949-12-01), Early et al.
patent: 4208566 (1980-06-01), Eghammer et al.
patent: 4237365 (1980-12-01), Lambros et al.
patent: 4973813 (1990-11-01), Mitchell
patent: 5616969 (1997-04-01), Morava
patent: 2003/0089684 (2003-05-01), Beauregard et al.
patent: 2004/0195213 (2004-10-01), Angel
patent: 2004/0206526 (2004-10-01), Rashid
patent: 2007/0119069 (2007-05-01), Shim
patent: 60255286 (1985-12-01), None
patent: 62081276 (1987-04-01), None
patent: 62310383 (1989-06-01), None
patent: WO2005115673 (2005-05-01), None
XP 002392804—Focus on BIA's Work, Berufsgenossenschaftliches Institut for Arbeitsschutz, No. 0213, Electromagnetic Fields on Hand Held Spot-Welding Guns, 617.0-BIA: 638.25, HVBG.
European Search Report from EP Application No. 06425154.9 dated Oct. 2, 2006.
C.R.F. Societa Consortile per Azioni
Cardona Victor A.
Heslin Rothenberg Farley & & Mesiti P.C.
Ralis Stephen J
LandOfFree
Electric spot welding head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric spot welding head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric spot welding head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4237583