Mast assembly for rotary tool
US5055654A · kind A · utility
1Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1987 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | May 29, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0284
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool having a rotating mast assembly 12 is provided which includes a hollow conductive gas transmitting electrode 14 and a non-hygroscopic ceramic shielding tube 12 which is made of at least 94% by weight Al.sub.2 O.sub.3 and has a tensile strength of at least 20,000 P.S.I. and an ability to withstand temperatures in excess of 1500.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.