Cutlery – Carton openers
Reexamination Certificate
1998-09-01
2001-02-06
Gerrity, Stephen F. (Department: 3729)
Cutlery
Carton openers
C030S002000, C030S286000, C030S289000, C030S294000, C030S317000, C030SDIG008
Reexamination Certificate
active
06182364
ABSTRACT:
BACKGROUND OF THE INVENTION
A unique stock carton safety knife was previously developed, as set forth in U.S. Pat. Nos. 5,412,871 and 5,539,983, both incorporated by reference herein. The outer blade juncture of the knife has a blunt knob such as a sphere, as part of the patented combination. The present invention relates to a unique attachment of the knob to the blade.
SUMMARY OF THE INVENTION
The present invention was made to achieve easy and secure attachment of the blunt knob to the blade tip of a stock carton safety knife. The blade tip has a special configuration for effective securement of the blunt knob to the blade, creating an excellent bonded joint. The configuration has a narrower central portion laterally straddled by a pair of cavities, and axially straddled by a pair of wider portions, the knob being bonded in place encompassing the central portions and the bonding material filling the cavities.
These and other features, advantages and objects of the present invention will be further understood and appreciated by those skilled in the art by reference to the following specification, claims and appended drawings.
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Gerrity Stephen F.
Kim Paul D.
Price Heneveld Cooper DeWitt & Litton
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