A knife and scissors having a protection means are disclosed. The knife, which has a handle, a body extended in one direction in engagement with the handle, and a body blade formed at the bottom of the body, for performing a cutting action, includes a protrusion spaced upward from a distal end of the body, an insertion portion formed in a space between the body and the protrusion, and an upper blade formed at the bottom of the insertion portion. The upper blade cuts an object inserted in the insertion portion and the protrusion protects a human body or the object by contacting the body or the object earlier than the distal end of the body, when the body slips off the object.

A knife and scissors having a protection means are disclosed. The knife, which has a handle, a body extended in one direction in engagement with the handle, and a body blade formed at the bottom of the body, for performing a cutting action, includes a protrusion spaced upward from a distal end of the body, an insertion portion formed in a space between the body and the protrusion, and an upper blade formed at the bottom of the insertion portion. The upper blade cuts an object inserted in the insertion portion and the protrusion protects a human body or the object by contacting the body or the object earlier than the distal end of the body, when the body slips off the object.

Presented embodiments of the handheld cutting tool are capable of cutting in one of two ways: with the cutting edge of the blade only so as to minimize damage to objects not intended to be cut or, alternately, with the point of the blade as with more typical knives. The tool is comprised predominantly of a handle body, a blade holder and a rotational control assembly for allowing the blade holder to rotate. The blade holder holds either a replaceable isosceles trapezoid utility blade or replaceable single edge razor blade and has, in some embodiments, a portion that isolates parts of the blade from objects not intended to be cut. The rotational control assembly enables the blade holder to rotate between retracted and a plurality of extended positions thus permitting the blade holder to deploy the blade at various angles to facilitate proper cutting of materials.

A knife for holding a blade having a bottom with a hole and a cutting tip which extends from the bottom includes a body having a rest zone for the bottom of the blade to be disposed in the body, and a mouth at a front end of the body which receives the bottom of the blade. The mouth guides the bottom of the blade to the rest zone. The body includes a recess in communication with the rest zone. The knife includes a lock disposed in the recess for securely holding the blade. The lock has a base which is fixedly attached inside the body. When in a locked state, the lock end is disposed in the hole in the bottom of the blade which holds the blade in place and the blade is unable to move from the rest zone. When in an unlocked state, the lock end separate and apart from the hole in the bottom of the blade so the blade can be moved from the rest zone. The lock having a move disposed between the lock end and the base. When a force is applied to the move, the move moves the lock end between the unlocked state and the locked state. Alternatively, there is a jaw with the lock end for the blade. A method for positioning a blade relative to a knife.

Safety knife with a blade that can be replaced and where access to the cutting edge of the blade is limited so as to reduce the risk of injury to a user, comprising a blade piece with a blade arranged between a guard and a fixation and an oblong knife body comprising a holder and a partly flat insert for rigidly holding the blade piece near a proximal end, wherein said insert having rails on both sides of the flat part at least near the proximal end, said holder including a depression near the proximal end for receiving the fixation and a channel extending from the proximal end towards the distal end at least beyond the depression for receiving at least the flat part of the insert, said channel having grooves on each side starting at the proximal end for receiving the rails.

Safety knife with a blade that can be replaced and where access to the cutting edge of the blade is limited so as to reduce the risk of injury to a user, comprising a blade piece with a blade arranged between a guard and a fixation and an oblong knife body comprising a holder and a partly flat insert for rigidly holding the blade piece near a proximal end, wherein said insert having rails on both sides of the flat part at least near the proximal end, said holder including a depression near the proximal end for receiving the fixation and a channel extending from the proximal end towards the distal end at least beyond the depression for receiving at least the flat part of the insert, said channel having grooves on each side starting at the proximal end for receiving the rails.

A scalpel handle for holding a blade includes a handle member and a blade shield for covering the cutting edge of the blade. The blade shield is connected to the handle member for movement relative thereto between a blade-covering position and an out-of-the-way position, and a finger-operable actuator is mounted upon the handle member for movement relative thereto and is connected to the shield so that by moving the actuator between first and second conditions, the shield is moved between its blade-covering and its out-of-the-way positions. An over center spring is interposed between the actuator and the handle member so that upon movement of the actuator into its second condition, the shield is biased into the out-of-the-way position and so that upon movement of the actuator into its first condition, the shield is biased into the blade-covering position.

A scalpel handle for holding a blade includes a handle member and a blade shield for covering the cutting edge of the blade. The blade shield is connected to the handle member for movement relative thereto between a blade-covering position and an out-of-the-way position, and a finger-operable actuator is mounted upon the handle member for movement relative thereto and is connected to the shield so that by moving the actuator between first and second conditions, the shield is moved between its blade-covering and its out-of-the-way positions. An over center spring is interposed between the actuator and the handle member so that upon movement of the actuator into its second condition, the shield is biased into the out-of-the-way position and so that upon movement of the actuator into its first condition, the shield is biased into the blade-covering position.

This invention is about a fish fillet knife sheath with sharpening function, inside the sheath body features a storage chute, inside the storage chute features a sliding in sharpening rod, a pop-up pressure spring located between the front end of the storage chute and the sharpening rod, in the rear of the sheath body features a locking lever with a hinge, the rear part of the locking lever features a locking block which extrudes towards the sharpening rod, the front lateral side of the locking block features a locking slope oblique towards the sharpening rod from the front to the back; the rear part of the sharpening rod features a compaction slope which is coordinated with the locking slope, the sheath body features a cam switch via the switch pin with a hinge, the cam switch features a locking pressure spring. This invention is simple, convenient, beautiful and hands protective.

A lightweight, handheld screen trimmer (10, 20, 30, 40) which aids in trimming excess screen (340) and also in removing, tucking in, and trimming spline (320). The screen trimmer (10, 20, 30, 40) assists in several tasks relating to removing, replacing and installing screening (330) in a screen frame (300).