Contact tube for a welding torch
US8546727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2009 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | May 28, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/123
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a contact tube (29) for a welding torch (10), having a longitudinal axis (31) along which a through-opening (30) for guiding a welding wire (13) from an inlet region (37) to an outlet region (35) and from an outlet opening (39) towards a workpiece (16) is provided, wherein at least one slot (34) is provided in the outlet region (35) for making contact with the welding wire (13). A contact tube (29) with improved contacting of the welding wire (13) is obtained by providing at least one further slot (36) in the inlet region (37) of the contact tube (29), wherein the slot (36) in the inlet region (37) is arranged in line with the slot (34) in the outlet region (35), and a web (38), which serves as a pivot point, is formed between the slot (34) in the outlet region (35) and the at least one slot (36) in the inlet region (37).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.