Geometrical instruments – Gauge – Template
Reexamination Certificate
2001-01-23
2002-12-31
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Gauge
Template
C033S566000
Reexamination Certificate
active
06499223
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention pertains to corner rulers.
Previously, a corner section of objects to be cut of things like plate glass were cut, and a marked line of a desired shape was formed on the corner section while guiding a tool, such as a glass cutter, by an item such as a compass or ruler, when treating corner cuts at a 45 degree straight line.
However, there was the problem that position determination required skill, as being done without a stable compass or ruler was difficult since a plate glass surface is easily cracked.
SUMMARY OF THE INVENTION
Therefore, the present invention includes a corner ruler that is characterized by a ruler main body being formed with respective interlayer plates attached to both surfaces of a center plate, a ruler section being formed at a corner section of the same ruler main body, a position determining plate being established which extends from a center plate as situated on two sides of a ruler main body which the same ruler section lies between, a front end wire of the same position determining plate projecting beyond the surface of a ruler main body, and position determination being performed by abutting the same position determining plate to an end wire of two sides which a corner of the object to be cut lies between.
There are also the following features.
The above-mentioned ruler main body is formed in a substantially rectangular shape, and the respective ruler sections are formed at the corner sections which are located on a diagonal line of the above-mentioned rectangular shape.
The above-mentioned ruler section is an almost ¼ arc shape.
The above-mentioned ruler section has straight lines that intersect at almost 45 degrees with adjacent position determining plates.
REFERENCES:
patent: 4382590 (1983-05-01), Pandya et al.
patent: 4739558 (1988-04-01), Black
patent: 5615485 (1997-04-01), Stoneberg
patent: 5946999 (1999-09-01), Kahn
patent: H10-214131 (2000-01-01), None
Alpha Professional Tools
Gutierrez Diego
Verbitsky Gail
Weingram & Associates P.C.
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