US 2023/0057750 A1Published application

Slide Cutting Shears

OwnerChao Weiinventor

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Abstract

A pair of slide cutting shears that have identical cutting angles of approximately 53 degrees on the thumb and finger blades, and where the thumb blade has approximately only 40% of the top end of the blade sharpened and the remaining section of the working blade is radiused and cannot cut. The shears have a four finger grip, and adjustable bump stop and a tightenable pivot pin assembly to draw the blades closer.

Claims7

Dependent claims

A pair of slide cutting shears comprising:

a finger blade having a first blunted tip, a first pivot pin orifice therethrough, a first cutting face, a first leading edge, and a four finger grip sequentially formed with a first and a second external concave finger grip, an enclosed finger grip with a finger orifice therethrough and a third external concave finger grip formed about a tail extending from said enclosed finger grip;
a thumb blade having a second blunted tip, second pivot pin orifice therethrough a second cutting face, a second leading edge opposing said first leading edge, an enclosed thumb grip with a thumb orifice therethrough, a bump tab extending therefrom said enclosed thumb grip, and a depth adjustable spherical bump stop threaded into and extending outward therefrom said thumb grip;
a pivot pin assembly made of a pivot pin with a proximal end and a distal end, and a pivot pin keeper, wherein said proximal end of said pivot pin has a gripable perimeter and said distal end is configured for tightenable, mating engagement with said pivot pin keeper to draw said finger blade and said thumb blade in closer proximity;
wherein said first leading edge has an approximately 53 degree included cutting angle between said first cutting face and a line extending perpendicularly from said first cutting face and extends an entire thickness of said finger blade;
and
wherein said second leading edge has an upper cutting edge, a lower sliding edge and an interface therebetween, wherein said upper cutting edge has an approximately 53 degree included angle between said second cutting face and a line extending perpendicularly from said second cutting face and extends an entire thickness of said thumb blade, and wherein said lower sliding edge is radiused across an entire thickness of said thumb blade;
and
wherein said pivot pin resides between said first pivot pin orifice and said second pivot pin orifice so as to enable pivotal movement of said thumb blade and said finger blade about said pivot pin.

5 more elements

Dependencies are inferred from the claim text.

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Abstract

A pair of slide cutting shears comprising:

a finger blade having a first blunted tip, a first pivot pin orifice therethrough, a first cutting face, a first leading edge, and a four finger grip sequentially formed with a first and a second external concave finger grip, an enclosed finger grip with a finger orifice therethrough and a third external concave finger grip formed about a tail extending from said enclosed finger grip;
a thumb blade having a second blunted tip, second pivot pin orifice therethrough a second cutting face, a second leading edge opposing said first leading edge, an enclosed thumb grip with a thumb orifice therethrough, a bump tab extending therefrom said enclosed thumb grip, and a depth adjustable spherical bump stop threaded into and extending outward therefrom said thumb grip;
a pivot pin assembly made of a pivot pin with a proximal end and a distal end, and a pivot pin keeper, wherein said proximal end of said pivot pin has a gripable perimeter and said distal end is configured for tightenable, mating engagement with said pivot pin keeper to draw said finger blade and said thumb blade in closer proximity;
wherein said first leading edge has an approximately 53 degree included cutting angle between said first cutting face and a line extending perpendicularly from said first cutting face and extends an entire thickness of said finger blade;
and
wherein said second leading edge has an upper cutting edge, a lower sliding edge and an interface therebetween, wherein said upper cutting edge has an approximately 53 degree included angle between said second cutting face and a line extending perpendicularly from said second cutting face and extends an entire thickness of said thumb blade, and wherein said lower sliding edge is radiused across an entire thickness of said thumb blade;
and
wherein said pivot pin resides between said first pivot pin orifice and said second pivot pin orifice so as to enable pivotal movement of said thumb blade and said finger blade about said pivot pin.

5 more elements