Ruler for cutting sheet material

Details Ruler for cutting sheet material Ruler for cutting sheet material

2005-02-08

2005-02-08

Watts, Douglas D (Department: 3724)

Cutlery

Static pencil sharpener

Having conical or cylindrical work guide

C030S289000, C033S483000, C083S746000, C083S821000

Reexamination Certificate

active

06851196

ABSTRACT:
A ruler that is to be used for cutting sheets of material perpendicular to its longitudinal edges. The ruler is a longitudinal piece of rigid material that increases in thickness from one edge to the other. A cutting groove is placed into the rigid material at a thickened edge so as to aid the direction of a sharpened instrument passing through the groove while cutting the material. A hardened insert may be inserted into the groove to prevent the edges of the groove being damaged by the sharp cutting instrument. One end of the ruler has an extension of eyelet molded thereon and the other end of the ruler has a depression molded into an under surface of the ruler. Both the eyelet and the depression have a matching configuration to snap-fit into each other to thereby connect two rulers together in a rigid manner.

REFERENCES:
patent: 4232805 (1980-11-01), Flick
patent: 5079842 (1992-01-01), Ward
patent: 5404778 (1995-04-01), Ward
patent: 6141882 (2000-11-01), Syken

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