Resistance welder
US4329559A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Jul 3, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/315
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In effecting resistance welding, fluid pressure is applied to a piston in a cylinder to drive the piston rod ahead so that work being welded is clamped between an electrode provided at the end of the rod and another electrode carried by an arm to apply a suitable welding pressure to the work. As the piston is further moved ahead, a collector ring is expanded radially outwardly to make electrical contact with the power feeding liner, so that welding current fed from a feeder cable is supplied to the electrode through the cylinder, feeding liner, collector ring, collector plate and the rod, thereby to effect the welding while applying a suitable pressure to the work.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.