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active blade is to be replaced, it is moved by the carrier into the used blade compartment, and a new blade may then be withdrawn from the new blade compartment into the operative position.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active blade is to be replaced, it is moved by the carrier into the used blade compartment, and a new blade may then be withdrawn from the new blade compartment into the operative position.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 blade for a powered utility knife, has a blade body with an upper edge defining an upper blade notch, an opposite, lower edge defining a cutting edge, and a loading assist aperture positioned between the upper edge and the lower edge. The cutting edge has first and second cutting portions separated by a vertical centerline of the blade body. The first cutting portion has a structural configuration matched to cutting material of a first cutting character, with a curved or inclined first end cutting portion spaced and directed away from the vertical centerline, and the second cutting portion having a structural configuration matched to cutting material of a second cutting character, the first and second cutting characters being different.

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 powered utility knife blade includes a blade body defining an engagement notch defined by a distal edge of the blade, and a cutting edge opposite the distal edge. The cutting edge extends from a first curved or inclined end onto a second curved or inclined end opposite the first curved end.

Abstract: A powered utility knife has a housing defining a handle surface and an internal cavity. A shuttle plate assembly disposed for movement relative to the internal cavity, with a first surface in sliding engagement with an interior wall of the cavity includes a motor mounted to the shuttle plate and a blade carrier with a surface in sliding engagement with the shuttle plate. A drive assembly associated with the motor imparts effective cutting motion to a blade on the blade carrier. An activator protruding through a slot in the housing is configured for slidable translation along the slot to cause lateral movement of the shuttle plate assembly within the cavity. The blade, with the shuttle plate assembly in extended position, has a first portion protruding through a blade slot at the end of the housing, and with the shuttle plate assembly in retracted position, the blade is retracted within the cavity.

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 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 lo 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 powered utility knife has a housing defining a handle surface and an internal cavity. A shuttle plate assembly disposed for movement relative to the internal cavity, with a first surface in sliding engagement with an interior wall of the cavity includes a motor mounted to the shuttle plate and a blade carrier with a surface in sliding engagement with the shuttle plate. A drive assembly associated with the motor imparts effective cutting motion to a blade on the blade carrier. An activator protruding through a slot in the housing is configured for slidable translation along the slot to cause lateral movement of the shuttle plate assembly within the cavity. The blade, with the shuttle plate assembly in extended position, has a first portion protruding through a blade slot at the end of the housing, and with the shuttle plate assembly in retracted position, the blade is retracted within the cavity.

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.

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 keyless chuck assembly for a hand-held drill includes a housing, three jaws for gripping a drill which is to be turned by the drill chuck assembly. The jaws are retained in the assembly and confined to radial motion with respect to the drive shaft by means of T-shaped guide slots in the bottom of the drive shaft and cooperating T-shaped ribs on the tops of the jaws. The jaws have a gripping surface and a cam surface. A rotatable adjusting ring engages the jaws to move them in the radial direction to secure and release the drill bit. The jaws can include a resilient material between the gripping surface and the cam surface to allow the chuck jaws to more securely grip the drill bit. A locking mechanism prevents rotation of the ring which would allow the jaws to open.

Abstract: An adjustable ratchet wrench has a housing carried by a handle. The housing has a generally cylindrical chamber which carries a control member which in turn supports the jaws. The control member is connected to the handle by a ratchet assembly whose setting determines the direction in which the tool may be used to turn a workpiece. The housing also carries a cam disk that engages the jaws and opens and closes them depending upon the direction in which it is rotated. A locking mechanism is provided to prevent the jaws fro opening after they have been adjusted to grip a particular workpiece in response to reactive forces on the jaws. The wrench may also have a powered handle to drive the workpiece.

Abstract: An adjustable ratchet wrench has a housing carried by a handle. The housing has a generally cylindrical chamber which carries a control member in turn supports the jaws. The control member is connected to the handle by a ratchet assembly whose setting determines the direction in which the tool may be used to turn a workpiece. The housing also carries a cam disk that engages the jaws and opens and closes them depending upon the direction in which it is rotated. A locking mechanism is provided to prevent the jaws from opening after they have been adjusted to grip a particular workpiece in response to reactive forces on the jaws. The wrench may have a power handle to drive the workpiece.

Abstract: An adjustable wrench having a housing with a handle and having a plurality of jaws that extend out the bottom of the housing and move radially with respect to one another. The housing contains a control disk which may be locked to the housing to prevent the jaws from turning with respect to the housing. A jaw adjusting disk is disposed beneath the control disk and extends out the bottom of the housing. The adjusting disk contains cams that open and close the jaws depending upon the direction of rotation of the adjusting disk.

Abstract: An adjustable ratchet wrench has a housing carried by a handle. The housing has a generally cylindrical chamber which carries a mounting disk which in turn supports three equidistantly spaced jaws. The mounting disk is connected to the handle by a ratchet assembly whose setting determines the direction in which the tool may be turned to turn the nut or other workpiece. The housing also carries a cam disk that engages the jaws and opens and closes them depending upon the direction in which it is rotated. A second ratchet mechanism determines the direction in which the cam disk may be rotated with respect to the mounting disk so as to open and close the jaws.In one embodiment, a power pack, motor and gears are mounted in the handle for automatically driving the mounting disk to turn the work engaged by the handle.