Resistance seam welding machine
US4803325A · kind A · utility
6Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1988 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Jan 6, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/125
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A resistance seam welding machine is described, particularly for the longitudinal seam welding of can bodies, wherein, in the secondary loop (16), feed and return lines are constructed partially as a double line (18, 28) and in all the remaining portion (18a, 18b, 18c, 20, 24, 26) in the form of a substantially coaxial line. The voltage loss occurring in the secondary loop (16) between welding transformer (14) and welding position (8, 10) and the heat due to energy losses in the machine parts adjacent to the secondary loop are considerably reduced as a result of this construction of the feed return lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.