Tube bending mandrel
US4635464A · kind A · utility
10Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Sep 3, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D9/03
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A flexible tube-bending mandrel has a longitudinally-split shank link that is unthreaded, but recessed to receive a nut that threadedly engages the bolt for holding the link to a mandrel shank. The mandrel center links are longitudinally split for ease of assembly of their ball-and-socket interconnections and have their socket ends externally threaded to receive an internally-threaded ball segment that holds the center link sections in assembled condition and effectively restrains relative longitudinal motion of the two mating link sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.