Tube extractor drill jig
US4646413A · kind A · utility
17Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Jun 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/567
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a drill jig assembly for use in the removing a tube from a wall structure. the device fits within the tube and defines drill guide grooves along its length such that, a rotating drill inserted into the guide grooves will cut away a portion of the wall thickness of the tube. When portions of the tubing wall thickness have been reduced, the tube may be readily inwardly collapsed so as to easily remove it from the wall structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.