Screw having a V-shaped groove profile for cooperating with a pinion in a compression or expansion machine
US4342548A · kind A · utility
6Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1979 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Dec 5, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/300112
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool having only an end cutting-edge carries out a first movement of penetration into a screw blank so as to produce a groove having flanks substantially parallel to the pinion axis. The tool-holder is angularly displaced with respect to the spindle which carries the screw blank. A second movement of tool penetration takes place while the relative displacement is progressively reduced in order to obtain an inclined flank which produces a V-shaped profile. The screw is intended to form part of a compression and expansion machine and to cooperate with at least one pinion having V-form teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.