Spring assisted knife
AssigneeAlltrade Tools LLC
InventorHector Ray Hernandez
Life of this patent
Estimating the term…
Abstract
A folding knife comprising a handle which includes a left cover and a right cover that are separated from each other by a space and that are connected to each other by at least one pin; a blade configured to rotate around an axle extending between the left cover and the right cover, the blade defining a means for attachment spaced apart from the axle by an offset distance; a helical torsion spring surrounding the pin, the spring having a first end that is fixed to the handle and a second end that is free to move in relation to the handle; and a connecting element that connects the free end of the spring to the means for attachment on the blade.
Claims13
A folding knife comprising:
- a handle which includes a left cover and a right cover that are separated from each other by a space and that are connected to each other by at least one pin;
- a blade configured to rotate around an axle extending between the left cover and the right cover, the blade defining a means for attachment spaced apart from the axle by an offset distance;
- a helical torsion spring having an elongate axis and surrounding the pin, the spring having a first end that is fixed to the handle and a second end that is free to move in relation to the handle;
- and
- a connecting element that connects the free end of the spring to the means for attachment on the blade;
- and further
- wherein the helical torsion spring's elongate axis and the pin are aligned and parallel with the axle.
A folding knife comprising:
- a handle which includes a left cover and a right cover which are separated from each other by a space;
- a blade configured to rotate in a plane about an axle, the blade defining a means for attachment spaced apart from the axle by an offset distance;
- a helical torsion spring with an elongate axis located in the space between the left cover and the right cover, the spring being positioned with the elongate axis perpendicular to the plane, the spring having a first end that is fixed in relation to the handle and a second end that is free to move in relation to the handle;
- and
- an elongate connecting element that connects the free end of the spring to the means for attachment on the blade.
A folding knife comprising:
- a handle which includes a left cover and a right cover that are separated from each other by a space and that are connected to each other by at least one pin;
- a blade configured to rotate around an axle extending between the left cover and the right cover, the blade defining a means for attachment spaced apart from the axle by an offset distance;
- a spring having a first end fixed to the handle and a second end that is free to move in relation to the handle;
- and
- an elongate connecting element having an elongate axis, the connecting element connecting the free end of the spring to the means for attachment on the blade, wherein the elongate axis extends above a central axis of the axle when the blade is in an open condition, and wherein the elongate axis extends below the central axis of the axle when the blade is in a closed condition;
- and further
- wherein the spring is a torsion spring positioned with an axis that is parallel with the central axis of the axle.
Dependencies are inferred from the claim text.