Abstract: A self-loading utility knife including an elongate handle having an internal chamber defining an axis and at one end is flat aperture for the passage of an active blade. The flat aperture defines a cutting plane extending through said handle along the axis. A blade-holder is slidably mounted in the chamber for movements in directions along the axis and is adapted to secure a single active blade for movement through the aperture when the blade holder is in the extended position. A blade-holder release button is coupled to the blade holder and is slidingly movable relative to the handle to move blade holder between retracted and extended positions. The handle has a blade compartment which is open to the chamber and can receive a stack of spare blades when a cover to the compartment is opened and blades can be shifted transversely relative to the axis into the chamber.

Abstract: A retractable knife includes a handle and a utility blade having a first side and a second side. The retractable knife further includes a blade holder comprising a first plate and a second plate configured to cover at least a portion of said first and second sides of said utility blade, and for supporting said utility blade. The blade holder may be telescopically movable relative to said handle between an extended position and a retracted position, and wherein the blade holder extends out from the handle in said extended position. A blade release member may be mounted on the blade holder.

Abstract: A retractable knife includes a handle and a utility blade having a first side and a second side. The retractable knife further includes a blade holder comprising a first plate and a second plate configured to cover at least a portion of said first and second sides of said utility blade, and for supporting said utility blade. The blade holder may be telescopically movable relative to said handle between an extended position and a retracted position, and wherein the blade holder extends out from the handle in said extended position. A blade release member may be mounted on the blade holder.

Abstract: A retractable knife includes an elongate handle and a blade holder slidingly mounted within the handle for sliding movements between a retracted position and an extended position. The blade holder is configured for receiving. A manually operable blade lock is formed on the holder and including a release member rotatably mounted on the blade holder. The release member having a first portion projecting beyond the handle and positioned to be actuated by a finger of a user while holding the handle. A second portion is movable with the first portion between a locking position in which the second portion is received with a notch of a blade and a releasing position in which the second position is removed from the blade notch to a position outside the notch of the blade. A spring normally rotates the release member to move the second portion to the locking position.

Abstract: A self-loading utility knife including an elongate handle having an internal chamber defining an axis and at one end is flat aperture for the passage of an active blade. The flat aperture defines a cutting plane extending through said handle along the axis. A blade-holder is slidably mounted in the chamber for movements in directions along the axis and is adapted to secure a single active blade for movement through the aperture when the blade holder is in the extended position. A blade-holder release button is coupled to the blade holder and is slidingly movable relative to the handle to move blade holder between retracted and extended positions. The handle has a blade compartment which is open to the chamber and can receive a stack of spare blades when a cover to the compartment is opened and blades can be shifted transversely relative to the axis into the chamber.

Abstract: A self-loading utility knife including an elongate handle having an internal chamber defining an axis and at one end is flat aperture for the passage of an active blade. The flat aperture defines a cutting plane extending through said handle along the axis. A blade-holder is slidably mounted in the chamber for movements in directions along the axis and is adapted to secure a single active blade for movement through the aperture when the blade holder is in the extended position. A blade-holder release button is coupled to the blade holder and is slidingly movable relative to the handle to move blade holder between retracted and extended positions. The handle has a blade compartment which is open to the chamber and can receive a stack of spare blades when a cover to the compartment is opened and blades can be shifted transversely relative to the axis into the chamber.

Abstract: A retractable knife includes an elongate handle and a blade holder slidingly mounted within the handle for sliding movements between a retracted position and an extended position. The blade holder is configured for receiving. A manually operable blade lock is formed on the holder and including a release member rotatably mounted on the blade holder. The release member having a first portion projecting beyond the handle and positioned to be actuated by a finger of a user while holding the handle. A second portion is movable with the first portion between a locking position in which the second portion is received with a notch of a blade and a releasing position in which the second position is removed from the blade notch to a position outside the notch of the blade. A spring normally rotates the release member to move the second portion to the locking position.