Abstract: A blade release mechanism for a folding utility knife is provided, and knife comprising: a handle comprising at least two side walls forming an internal space; a blade holding compartment connected to the handle, the blade holding compartment comprising at least two side walls, a first side wall having a cavity for holding a blade, a second side wall having a cavity for holding a blade release device, at least a portion of the blade holding compartment is designed to be situated within the space of the handle during a closed position, the blade holding compartment comprising an aperture leading from the cavity on the first side wall to the cavity on the second side wall; and a blade release device comprising a slidable portion having first and second opposing sides and at least one spring, the device comprises a blade contacting portion situated in the cavity of the second side wall and adapted to fit through the aperture and contact a blade during a locked position, and the first spring is extended to secure

Abstract: A carabiner with a folding utility knife is provided, and the carabiner comprises: a handle element with two opposing first and second ends, the handle element has a cavity; a gate element for connecting the first and second ends of the handle element to form a handle element aperture, the gate element has opposing ends, at least one end of the gate element is pivotally attached to at least one end of the handle element, the gate element is movable to a closed position and an opened position; a blade; and a blade holder compartment having a front end and rear end, the rear end of the blade holder compartment is pivotally attached to at least a portion of the handle, the blade holder compartment comprises a cavity for receiving the blade, and the front end of the blade holder compartment has an aperture for allowing a portion of the blade to protrude from the aperture, and the blade holder compartment is movable to a closed position and an opened position.