Powder feed cylinder assemblies and powder feeders
US8297478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2008 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/702
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Powder feed cylinder assemblies and powder feeders are provided. A powder feed cylinder assembly includes a cylinder, a bit, and bushings. The cylinder has a main passage, a first feed channel, and a second feed channel, each feed channel at two axial locations between the cylinder's two ends. The bit extends through the main passage and has an outer surface including a helical channel formed thereon. A center bushing is disposed in the main passage between the two axial locations and has a first axially-extending passage through which the bit extends. The first end bushing is disposed in the main passage on one side of the center bushing and has a second axially-extending passage through which the bit extends. The second end bushing is disposed in the cylinder on the other side of the center bushing and has a third axially-extending passage through which the bit extends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.