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US 4,644,652 AGranted
Lopper with bypassing blades
AssigneeS.M.S. Industries, Inc.
InventorRichard E. Davis
Life of this patent
Estimating the term…
Abstract
A lopper has first and second pivotably interconnected blades arranged on opposite sides of a cutting plane. The blades have arcuate cutting edges defining a crescent shaped opening which maintains the same configuration as it gradually diminishes in size before eventually disappearing as the cutting edges bypass each other during a cutting operation. Preferably, one of the blade tips extends angularly away from the cutting plane.
Claims3
A lopper comprising:
- first and second blades arranged on opposite sides of a cutting plane, each of said blades having an arcuate cutting edge leading from a base portion of the blade to the blade tip;
- means for inter-connecting the base portions of said blades for pivotal movement about an axis perpendicular to said plane;
- and handle means connected to said base portions, said handle means being arranged to pivot said blades about said axis between an open position at which said blade tips are spaced apart and said cutting edges define an open notch, and a closed position at which said blade tips and said cutting edges completely bypass each other, the curvatures of said cutting edges being such that when the base portions and the tips of said blades initially overlap at two mutually spaced locations, the cutting edge segments extending between said locations define a crescent-shaped opening, and as said blades are pivoted to the closed position, said opening maintains the same configuration as it gradually diminishes in size before eventually disappearing, with said locations moving towards each other to centrally locate a workpiece in said opening.
Dependencies are inferred from the claim text.