Relating to cutters
US4701988A · kind A · utility
41Cited by
7References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1985 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Mar 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/304424
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention describes a cutter which is for positioning in an underground pipe which is too small for man entry. The cutter is for cutting holes in previously applied pipe lining which cover lateral connections. The cutting must be controlled from above ground. Flexibility and positionability is achieved by mounting the cutter head at the free end of a boom body, the other end of which is mounted through a universal joint to a mounting so that the boom can swing in any direction. The cutter is controlled in its movement by coupling it to a master unit located and controlled above ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.