Safety blade for severing stretchable film
First Claim
1. A blade for use in the severing of sheet material having a severing edge comprising a plurality of spaced-apart members, each member extended from the upper edge of the blade and disposed in the plane of the blade, and each member 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 the severing edge of the blade can snag sheet material on the side teeth, thereby causing a segment of the material to be severed.
8 Assignments
0 Petitions
Accused Products
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.
47 Citations
21 Claims
- 1. A blade for use in the severing of sheet material having a severing edge comprising a plurality of spaced-apart members, each member extended from the upper edge of the blade and disposed in the plane of the blade, and each member 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 the severing edge of the blade can snag sheet material on the side teeth, thereby causing a segment of the material to be severed.
- 9. A dispenser box adapted for receiving a rolled-sheet of material, said box comprising a container compartment having side, end and bottom walls and a cover for the walls, a blade disposed on the dispenser box so that portions of the sheet material can be dispensed from the box and transversely severed across the blade, the improvement comprising said blade having a severing edge comprising a plurality of spaced-apart members, each member extended from the upper edge of the blade and disposed in the plane of the blade, and each member 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 the severing edge of the blade can snag sheet material on the side teeth, thereby causing a segment on the material to be severed.
Specification