Multipurpose hand tool
First Claim
1. A multipurpose tool, comprising:
- a set of instruments, wherein one instrument of said set is a blade having a shank, a tip, a curved inner edge, and a curved outer edge extending substantially from said shank to said tip, at least a portion of said outer edge being sharpened to form a cutting edge;
a handle having a first end, a second end, and a compartment formed therein, said compartment having an opening at said second end, said compartment dimensioned for receiving at least one instrument of said set;
fastening means operable by a user to attach a selected instrument of said set to said first end of said handle; and
means for closing said opening.
0 Assignments
0 Petitions
Accused Products
Abstract
An ergonomically-designed, multipurpose tool including a handle, a blade with a shank and a tip, and a fastener for attaching the handle to the shank. The blade has a curved outer edge extending substantially from the shank to the tip, with, preferably, an integrally-formed gut hook positioned near the shank and opening toward the tip. A portion of the outer edge is sharpened to form a cutting edge. The fastener is user-operable for moving the blade from a first operating position where it opposes the handle to at least one next operating position, for example, extending forward of the handle for use as a hatchet. Regardless of the position of the blade, the user can control the length and direction of a cut by pivoting the wrist alone, the forearm at the elbow, the entire arm from the hand gripping the knife to the shoulder, by pushing or pulling the knife with the hand and forearm, or any combination thereof. Range of motion, dexterity and control of the cutting edge are thereby improved, with greater comfort than is possible with a conventional knife. The handle may include a compartment for storing one or more additional instruments for use therewith, such as a saw, a serrated blade, an ice pick, a fish hook, a knife blade, a file, a wrench, and a screw driver.
-
Citations
20 Claims
-
1. A multipurpose tool, comprising:
-
a set of instruments, wherein one instrument of said set is a blade having a shank, a tip, a curved inner edge, and a curved outer edge extending substantially from said shank to said tip, at least a portion of said outer edge being sharpened to form a cutting edge; a handle having a first end, a second end, and a compartment formed therein, said compartment having an opening at said second end, said compartment dimensioned for receiving at least one instrument of said set; fastening means operable by a user to attach a selected instrument of said set to said first end of said handle; and means for closing said opening. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A knife, comprising:
-
a handle having a longitudinal axis, a first end and a second end; and a blade having a shank, a tip, an inner edge, and a curved outer edge extending substantially from said shank to said tip, at least a portion of said outer edge being sharpened to form a cutting edge; and means for attaching said handle to said shank of said blade so that said handle extends over said inner edge, said handle being spaced apart from said inner edge, said outer edge of said blade being having a center of curvature near said longitudinal axis so that, when said handle is grasped by a user, said center of curvature is near said user'"'"'s wrist, whereby a force applied at a center of said handle directed towards said cutting edge generates an approximately uniform cutting force in a direction tangent to said cutting edge as said blade is swept through an arc. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A knife, comprising:
-
a handle having a first end and a second end; a curved blade attached to said handle, said blade having a shank, a tip, an inner edge, and an outer edge extending substantially from said shank to said tip, a portion of said outer edge being sharpened to form a cutting edge, said blade having a plurality of operating positions including a first position wherein said handle extends approximately over said inner edge, said handle being spaced apart from said inner edge, and at least one next position; and user-operable means for attaching said blade to said handle in a selected position of said plurality of operating positions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification