Variable orifice torch
US7842898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2007 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Sep 28, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y40/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A variable orifice torch for use in a solid free form fabrication system for manufacturing a component from successive layers of metal feedstock material. The variable orifice torch includes a torch structure defining a torch nozzle formed of a highly conductive bulk material. The variable orifice torch further includes a gas flow channel and a variable orifice defined therein. An arc electrode is disposed within the gas flow channel. The variable orifice is defined in the torch nozzle and in alignment with the arc electrode. The variable orifice is coupled to the torch structure in a manner operable to control a flow gas therethrough by varying the size of an aperture defined by the variable orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.