Abstract: A utility knife has a disposable blade cartridge in its handle that has new and used blade compartments. Fresh blades are disposed in the new blade compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by a push button assembly. When the active blade is to be replaced, it is moved by the carrier into the used blade compartment, and a new blade may then be withdrawn from the new blade compartment into the operative position. The cartridge may be reversed when the one end of all the blades in the new blade compartment are used, placing what was the used blade compartment at the front, and the unused end of each blade may be advanced into the operative position. When all are used, a new cartridge may replace the used cartridge.

Abstract: A utility knife has a disposable blade cartridge in its handle that has new and used blade compartments. Fresh blades are disposed in the new blade compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by a push button assembly. When the active blade is to be replaced, it is moved by the carrier into the used blade compartment, and a new blade may then be withdrawn from the new blade compartment into the operative position. The cartridge may be reversed when the one end of all the blades in the new blade compartment are used, placing what was the used blade compartment at the front, and the unused end of each blade may be advanced into the operative position. When all are used, a new cartridge may replace the used cartridge.

Abstract: A utility knife has a disposable blade cartridge in its handle that has front and rear blade compartments. Each compartment is sized to store a plurality of blades in side-by-side relation. Fresh blades are disposed in the front compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by an actuator on the handle. When the active blade is to be replaced, it is moved by the carrier into the rear compartment, and a new blade may then be withdrawn from the front compartment into the operative position. The active blade when not in use is partially withdrawn into the front compartment. The cartridge is reversed when the one end of all the blades in the front compartment are used, placing what was the rear compartment at the front, and the unused end of each blade is advanced into the operative position and when used they are each moved to the rear compartment.

Abstract: A utility knife has a blade cartridge that has front and rear blade compartments. Each compartment stores a plurality of blades. Fresh blades are disposed in the front compartment and are advanced one at a time out of the compartment by a carrier that is controlled by an actuator on the handle. When the active blade is to be replaced, it is moved by the carrier into the rear compartment, and a new blade may then be withdrawn from the front compartment into the operative position. The active blade when not in use is withdrawn into the front compartment. The cartridge is reversed when the one end of all the blades in the front compartment are used, placing what was the rear compartment at the front, and the unused end of each blade is advanced into the operative position and when used they are each moved to the rear compartment.

Abstract: A utility knife has a disposable blade cartridge in its handle that has front and rear blade compartments. Each compartment is sized to hold a plurality of blades in side-by-side relation. Fresh blades are disposed in the front compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by an actuator on the handle. When the active blade is to be replaced, it is moved by the carrier into the rear compartment, and a new blade may then be withdrawn from the front compartment into the operative position. The active blade when not in use is withdrawn into the case. When the one end of all the blades in the front compartment are used the cartridge is reversed, placing what was the rear compartment at the front, and the unused end of each blade is advanced into the operative position and when each is used it is moved to the rear compartment. When all are used, a new cartridge replaces the old in the knife.

Abstract: A utility knife has a disposable blade cartridge in its handle that has front and rear blade compartments. Each compartment is sized to store a plurality of blades in side-by-side relation. Fresh blades are disposed in the front compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by an actuator on the handle. When the active blade is to be replaced, it is moved by the carrier into the rear compartment, and a new blade may then be withdrawn from the front compartment into the operative position. The active blade when not in use is partially withdrawn into the front compartment. The cartridge is reversed when the one end of all the blades in the front compartment are used, placing what was the rear compartment at the front, and the unused end of each blade is advanced into the operative position and when used they are each moved to the rear compartment.

Abstract: A utility knife has a disposable blade cartridge in its handle that has front and rear blade compartments. Each compartment is sized to hold a plurality of blades in side-by-side relation. Fresh blades are disposed in the front compartment and one end of each is advanced one at a time substantially out of the compartment into operative position by a carrier that is controlled by an actuator on the handle. When the active blade is to be replaced, it is moved by the carrier into the rear compartment, and a new blade may then be withdrawn from the front compartment into the operative position. The active blade when not in use is withdrawn into the case. When the one end of all the blades in the front compartment are used the cartridge is reversed, placing what was the rear compartment at the front, and the unused end of each blade is advanced into the operative position and when each is used it is moved to the rear compartment. When all are used, a new cartridge replaces the old in the knife.