Shearing apparatus
US4656905A · kind A · utility
10Cited by
6References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 2, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 2, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9447
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A shearing apparatus for performing several modes of operation on travelling or stationary material. Two cooperative knife drums, which can be rendered rotatable or non-rotatable, form a gap whose spacing is varied by hydraulic piston cylinder assemblies, one mounted on opposed ends of the upper or bottom drum. The adjustable knife drum is held in a parallel or non-parallel positioning or caused to rock with or without additional high frequency oscillations by controlling and regulating the pressure in the cylinders, while simultaneously moving the upper drum towards the lower drum and/or rotating both drums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.