Safety blade for severing stretchable film
US4450996A · kind A · utility
25Cited by
19References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1982 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Mar 15, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/298
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A severing blade comprising a plurality of spaced-apart extended members, each of said extended members having a blunt upper edge extremity and at least one side-extended tooth with a piercing tip disposed below the blunt upper edge extremity and in the plane of the blade so that a stretchable film transversely pulled over the severing edge will be snagged on the side-projected teeth thereby causing a segment of the film to be severed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.