Method and apparatus for detecting an inadequate gas supply for a plasma cutter
US6420672B1 · kind B1 · utility
12Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for plasma cutting is disclosed. A regulated flow of gas is provided to the torch. Power is also provides to the torch. A controller controls the system and includes a delay circuit. A gas pressure sensor is connected to the torch and/or the gas flow control, and/or the controller. A user indicator is connected to the delay circuit, and the user indicator is activated upon low pressure being detected, and maintained even if the pressure rises.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.