Thermal torch lead gas delivery methods and related systems and devices
US9427820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2013 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Jul 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/32
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In some aspects, methods of initiating a plasma arc in a plasma cutting system can include providing a plasma gas supply lead line extending between a power supply and a plasma arc cutting torch, where the lead line has a first segment proximate to the power supply and a second segment proximate to the torch, and an in-line valve within the lead line between the first segment and the second segment; selectively closing the in-line valve to capture a static volume of gas in the first segment; establishing a decayable volume of gas in the second segment; and initiating the plasma arc when a pressure of the decayable volume reaches a pressure value within a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.