Resistance welding apparatus affording operator protection
US4041272A · kind A · utility
8Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1975 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Sep 26, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/255
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Resistance welding apparatus having a power driven welding head carrying a first welding electrode for co-operation with a second welding electrode, wherein the head is switched from a low-force approach operating mode to a high-force squeeze operating mode only when the welding electrodes electrically contact one another, either directly or through a workpiece therebetween, so that no gap exists in which an operator's hand or finger can be crushed between the electrodes upon transition from low-force to high-force operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.