Air assisted hand held welding tool
US4559437A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Sep 4, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An air assisted hand welding tool for clamping and welding conductors together. The tool includes a handle formed of pivotally connected lever-like members. An air passage is connected to an air pressure source provided in the handle of the hand tool. A valve is manually engaged by the operator (following tactile closing of the electrodes on the conductors) to open the air pressure to an expansion chamber formed between the members. As the chamber pressure is increased, the members are urged to a consistent clamping force thereby to assist the operators normal hand clamping function. A switch in the expansion chamber is connected to the welding circuit and is activated following chamber expansion to initiate welding. The entire welding operation including air assist and welding current initiation are all accomplished by a simple closing motion of the operators hand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.