Bearing connector for rotary tool
US4804817A · kind A · utility
1Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/323
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool having a rotating hollow electrode is provided power through a rotary electrical connection in the form of ball bearings and conductive lubricant, with a fixed hollow power supply fitting mounted in and insulated from a housing structure journaled in the bearings. Gas for welding is supplied through the hollow fitting and electrode which are in fluid communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.