Abrading – Rigid tool – Having actuating handle
Reexamination Certificate
2000-01-31
2001-06-26
Morgan, Eileen P. (Department: 3723)
Abrading
Rigid tool
Having actuating handle
C451S552000, C451S555000, C451S423000
Reexamination Certificate
active
06251003
ABSTRACT:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
The present invention relates to a hand-held portable sharpener which can be carried in the pocket or suspended from a part of a person's clothing by means of a suitable tie, such as a chain.
By way of background, hand-held portable sharpeners having a cylindrical sharpening stone and end caps are known. However, devices of this type, when used, permit the knife to rotate circumferentially about the cylindrical surface whereby a constant sharpening angle of a knife blade relative to the stone cannot be maintained.
BRIEF SUMMARY OF THE INVENTION
It is one object of the present invention to provide an improved portable hand-held blade sharpener in the form of a polygon having a plurality of substantially planar sharpening surfaces against each of which a constant sharpening angle may be maintained.
Another object of the present invention is to provide an improved hand-held portable sharpening device in the form of an elongated polygon wherein the straight edges and vertices at its opposite ends are protected against chipping or nicking by plastic end caps.
A further object of the present invention is to provide an improved hand-held portable sharpener which can be conveniently grasped at one end thereof during a knife sharpening operation. Other objects and attendant advantages of the present invention will readily be perceived hereafter.
The present invention relates to a hand-held sharpening device for sharpening a blade comprising an elongated sharpening polygon having a plurality of elongated substantially planar sharpening surfaces for receiving the edge of a blade, an end portion on said elongated sharpening polygon, a plurality of straight edges on said end portion, and a cap covering said straight edges and extending onto said end portion of said polygon.
The various aspects of the present invention will be more fully understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:
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Gastel Joseph P.
Morgan Eileen P.
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