Cutting tool with a variable pivot system
AssigneeFiskars Brands, Inc.
InventorDaniel Cunningham
Life of this patent
Estimating the term…
Abstract
A hand operated cutting tool includes a first cutting member; a first handle including a second cutting member, wherein the second cutting member is coupled to the first cutting member and includes a first set of projections; and a second handle including a lever, wherein the lever is coupled to the first cutting member and includes a second set of projections. The first and second handles are movable between a full open position and a full closed position, wherein during a first region of travel proximate the full open position the first and second set of projections are disengaged, and during a second region of travel proximate the full closed position the first and second set of projections are at least partly engaged.
Claims19
A hand operated cutting tool, comprising:
- a first cutting member;
- a first handle including a second cutting member, wherein the second cutting member is coupled to the first cutting member and includes a first set of projections;
- a second handle coupled to the first cutting member, wherein the second handle includes a lever that includes a second set of projections;
- and
- a guide member coupled to the second cutting member;
- wherein the first and second handles are movable between a full open position and a full closed position, wherein during a first region of travel proximate the full open position the first and second set of projections are disengaged, and during a second region of travel proximate the full closed position the first and second set of projections are at least partly engaged.
A hand operated cutting tool, comprising:
- a first cutting member including a first pivot point and a second pivot point;
- a second cutting member coupled to the first cutting member at the second pivot point, wherein the second cutting member includes a first set of gear projections;
- a lever coupled to the first cutting member at the first pivot point, wherein the lever includes a second set of gear projections;
- and
- a guide member coupled to the second cutting member;
- wherein the first and second cutting members are movable between a full open position and a full close position that defines a cutting stroke, wherein the first and second set of gear projections are disengaged during a first region of the cutting stroke and at least partly engaged during a second region of the cutting stroke.
A method for operating a hand operated cutting tool, comprising:
- providing a first cutting member including a first pivot point and a second pivot point;
- providing a second cutting member coupled to the first cutting member at the second pivot point, wherein the second cutting member includes a first set of projections;
- providing a lever coupled to the first cutting member at the first pivot point, wherein the lever includes a second set of projections;
- and
- providing a guide member coupled to the second cutting member;
- wherein during a cutting stroke, the first and second cutting members are movable between a full open position and a full close position;
- wherein during a first region of travel proximate the full open position of the cutting stroke, the first and second set of projections are disengaged;
- and
- wherein during a second region of travel of the cutting stroke proximate the full close position, the first and second sets of projections are at least partly engaged.
Dependencies are inferred from the claim text.