Partial cut shearing device
US5347699A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1992 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Dec 11, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device for partially shearing single or multiple sheets of material comprising a base having a recess and a lower blade fixed in the recess. A pair of movable blades having opposed ends are pivotally attached to the base at one end. A lost-motion connecting link connects the free ends of the pair of movable blades together and is connected to a hydraulic piston which moves the link a limited distance towards the base, thereby to rotate both movable blades relative to the fixed blade with a scissors-like action. When the pair of blades is moved towards the lower blade, the material is cut inward from both sides or edges of the material, leaving an inner uncut portion of material having a width which corresponds to the stroke of the movable blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.