Roughing/finishing threader
US4669925A · kind A · utility
18Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/235
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Roughing threader cutting tool for Buttress pipe thread employing three scallops with arcuate chip breaking back walls for leading transvese and side flank cutting edges solving problem of excessive time consuming multiple passes and coil string chips and quadrupling production rate compared to cutting complete thread with finish threader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.