Round undulating blade, blade module, and rotary assembly for shredder
US7644881B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2007 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Jun 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C18/182
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a round undulating blade for shredder, where a sheet metal is integrally formed into a round undulating blade to serve as the blades for constructing a blade module. The blade includes: a periphery; an undulating blade flank including at least two cambers having a first curvature and at least two cambers having a second curvature alternatively arranged with respect to the cambers having the first curvature; and hooked edges formed on the periphery of the cambers having the first curvature, wherein the undulating blade flank of the blade serves to cut paper along a longitudinal direction to form paper strips having double-tapering end, and the hooked edges serve to cut the strips along a horizontal direction into paper chips. These characteristics help to reduce the manufacturing cost, reduce the motor load and power consumption, to thereby enhance the market competitiveness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.