Power and fluid supply source with multi-function cutting and welding capabilities
US4410788A · kind A · utility
Inventors
Key dates
| Filing date | Jun 2, 1981 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Jun 2, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/325
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus is disclosed for providing an improved power and fluid supply system which operates in a multiple functioning welding and cutting apparatus and which consists of a combination of a main power transformer which supplies the main welding current and a very high voltage transformer for supplying very high voltages above 200 volts required for plasma cutting. A transformer switching device provides for coupling between the main transformer and the very high voltage transformer in order to selectively connect the main transformer and the very high voltage transformer in parallel. The power supply including the main transformer, the very high voltage transformer and the transformer switching device are connected to a tool coupling device in order to selectively apply appropriate voltage and current levels to the tool coupling device through the use of a selector switch which is coupled to the fluid supply end of the power supply for selectively changing their respective outputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.