Scissors
AssigneeImott Inc.
InventorsMakoto Matsuo, Yoshinao Iwamoto, Hiroshi Ujiie
Life of this patent
Estimating the term…
Abstract
Scissors including a pair of shanks with one end forming an upper shear blade and a lower shear blade and with the other end of the pair of shanks forming handles, the handles being opened and closed centered about a pivot where the shanks intersect and causing the upper shear blade and lower shear blade to open and close, and screw for loosely fastening the pivot with a degree of freedom so that the screws do not interfere with sliding of the blades when cutting an object, at least one of the upper shear blade and the lower shear blade being formed by an alloy having an elastic deformation ability of 0.2% or more.
Claims8
Scissors comprising:
- a pair of shanks with one ends forming an upper shear blade having a blade part and a lower shear blade having a blade part and with the other ends of the pair of shanks forming handles, the handles being opened and closed centered about a pivot where the shanks intersect and causing the upper shear blade and the lower shear blade to open and close,
- at least one of the upper shear blade and lower shear blade being formed by a β-type titanium alloy, which is a nonmagnetic material, having an elastic deformation ability of 1% to 7% a tip side of the upper shear blade and the lower shear blade being curved upward in a vertical direction to a sliding surface of the shear blades;
- and
- screws for loosely fastening the pivot with a degree of freedom so that the screws do not interfere with sliding of the blades when cutting an object, wherein
- the blade part of the upper or lower shear blade is configured to cut while deforming so that a cutting edge part of the upper or lower shear blade slides against a curved surface of a cutting edge part of the other upper or lower shear blade, and wherein
- the blade part of the upper shear blade or the lower shear blade is configured to move to create a single point of a cut part along the blade part of the other shear blade.
Dependencies are inferred from the claim text.