The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2009
Filed:
Nov. 10, 2004
Andreas Prinz, Neuhofen, AT;
Walter Pammer, Bad Hall, AT;
Gerald Hieslmair, Piberbach, AT;
Uwe Kroiss, Wilhering, AT;
Andreas Prinz, Neuhofen, AT;
Walter Pammer, Bad Hall, AT;
Gerald Hieslmair, Piberbach, AT;
Uwe Kroiss, Wilhering, AT;
Fronius International GmbH, Pettenbach, AT;
Abstract
The invention relates to a method for the contactless ignition of a welding arc, in addition to a circuit () for the contactless ignition of an electric arc, comprising a charging circuit (), at least one pulse capacitor (), a decharging circuit containing a circuit, and a high tension converter () which is used to inject the high frequency ignition pulses discharged by the pulse capacitor () via the circuit to the welding electrode (). In order to create said type of ignition method and an ignition circuit () which enables the welding arc to be ignited in an exact and/or safe and rapid manner and/or to create an improved ignition quality, the charge circuit () is connected to a pulse compression circuit () comprising the pulse capacitor (), the high tension converter () and the circuit, the circuit being formed by a magnetic throttle valve (), such that a high frequency circuit of the ignition pulse can be obtained.