Geared hand tool
AssigneeFiskars Finland Oy Ab
InventorsStephen P. Dechant, Steven Stokes
Life of this patent
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Abstract
A hand tool includes a first jaw; a second jaw rotatably coupled to the first jaw, the second jaw including a first set of projections and a first bearing surface, the first bearing surface having a first curvature; and a lever coupled to the first jaw, the lever including a second set of projections and a second bearing surface, the second bearing surface having a second curvature. During a movement of the first and second jaws from a full open position to a full close position, the first and second sets of projections are at least partially engaged to prevent a slippage between the first and second bearing surfaces that are in a rolling contact during the movement of the first and second jaws from the full open position to the full close position.
Claims9
A hand tool, comprising:
- a first jaw having a first cutting member;
- and a second jaw having a second cutting member, the second jaw rotatably coupled to the first jaw by a first pivot connection, the second jaw including a first set of projections with spaces separating adjacent projections from each other, and a first bearing surface, the first bearing surface having a first curvature which substantially matches a pitch curvature of the first set of projections;
- and
- a lever coupled to the first jaw, the lever including a second set of projections with spaces separating adjacent projections from each other, and a second bearing surface, the second bearing surface having a second curvature which matches the first curvature;
- wherein the first and second jaws are movable between a full open position and a full close position, and wherein during a movement of the first and second jaws from the full open position to the full close position, the first and second sets of projections are at least partially engaged to prevent a slippage between the first and second bearing surfaces that are in at least partial contact throughout the movement of the first and second jaws from the full open position to the full close position.
Dependencies are inferred from the claim text.