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:
Sep. 14, 1982
Filed:
Dec. 05, 1979
Toivo T Makimaa, Lahti, FI;
Kemppi Oy, Lahti, FI;
Abstract
Disclosed is a coupling arrangement of a DC welding apparatus, particularly intended for MIG welding. The coupling comprises a controllable fast DC voltage source, first circuit elements for detecting both load current and load voltage and for generating voltage signals corresponding thereto, second circuit elements for forming a control signal in response to said voltage signals so as to correspond to the values of desired current step and current increase rate in a drop short-circuit instance, and third circuit elements which receive the control signal and effect control of the voltage source in response thereto. Said second circuit elements may include means for receiving a setting signal by which the characteristic values of the current step and the current increase may be set and scaled and the open circuit-voltage of the voltage source can be determined.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile