Apparatus for producing chips from logs of timber
US4161972A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chipping device including a disc-like member having a front face and the opposite face connected at its central region to a rotating shaft, said front face being provided with a spiral working surface which consists of main and auxiliary oblique surface portions extending along a spiral path from the central region of said disc-like member to the peripheral edge thereof, and being inclined relative to a plane perpendicular to the rotational axis of the disc-like member with an angle included between said main and auxiliary surface portions, said working surface having a plurality of cutting blades spaced from one another therealong, each of said cutting blades having main and auxiliary cutting edges substantially parallel to said main and auxiliary oblique surface portions, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.