Modified mig welding nozzle for stud welder
US4910379A · kind A · utility
Inventor
Key dates
| Filing date | May 17, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | May 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/295
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding apparatus for welding a new stud on to the end of a broken-off stud which comprises a conventional mig welding hose through which inert gas can pass and through which a mig welding wire can be fed, the hose having a conventional extension at one end thereof for attachment of a mig welding nozzle thereto, the extension also having a longitudinally extending contact tip guide attached thereto and through which the welding wire passes, the nozzle having an enlarged cylindrical portion which is received over the extension of the hose, and a reduced cylindrical portion extending over and beyond the contact tip guide in concentric relation thereto. The mig welding hose has a trigger for initiating the flow of inert gas through the hose and into the annular area between the guide and the nozzle, for supplying a d.c. welding voltage and for feeding the wire through the hose and through the contact tip guide. This invention constitutes an improvement wherein the cylindrical portion on the contact tip guide extending from the point of connection of the guide to the hose extension to the other end of the guide is of reduced external diameter as compared to the conventional contact t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.