Chuck assembly
US4605151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1985 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Jul 12, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chuck assembly (8) is described comprising a plurality of external jaws (103) arranged in an annular configuration; and a corresponding plurality of internal jaws (122) positioned within a pipe (13) in use with the internal and external jaws in alignment. The jaws (103,122) are radially movable towards each other to grip the pipe wall therebetween. Each jaw (103,122) includes a gripping portion comprising a recess (128) or projection (127) respectively which cooperate to assist the gripping of the pipe wall by the chuck assembly (8). Examples of the use of these chuck assemblies in friction welding apparatus and pipeline construction apparatus are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.