Abstract: A capless retractable sealed marking instrument has a sealed chamber incorporated in a marker casing. The sealed chamber includes a chamber, a wiper ring, and an annular rim and a seal portion with a cross-slit aperture defining surfaces or flaps which are moved out of contact by a linearly-advanced marker nib to open the seal for extension of the marker nib. The configuration of the disk provides positive sealing force between the lateral sealing surfaces of the seal flaps. Retraction of the marker nib draws the flaps back into the sealed chamber configuration to protect the marker nib and cartridge from atmospheric degradation.

Abstract: A hand-held device for shredding paper comprising a pair of rotary cutting wheels disposed within a housing between an inlet slot and an outlet slot. A motor is positioned in the handle to drive the cutting wheels through a gear assembly. One wheel serves as a drive wheel, which is coupled directly to the gear assembly, and the other wheel serves as an idler, driven from a spur gear attached to the drive wheel at the end opposite a gear case. Paper sheets are fed into the inlet slot and pulled between the wheels. Wheels are comprised of a stack of alternating discs of a large and small radius, and staggered so as to allow the two wheels to be interleaved while rotating in opposite (clockwise and counterclockwise) directions and maintain clearance. Large discs have a frictional edge to grab and feed the paper into the intersection of the wheels, tearing the paper into strips and forcing the strips into the outlet slot. A battery compartment in the handle contains the batteries for energizing the motor.

Abstract: A tape dispensing device is comprised of a means for rotatably supporting a roll of tape. A means for adhering to the tape and pulling the tape forwardly is positioned forwardly of the supporting means. The adhering means and pulling means is rotatably supported. A motor means is provided for imparting rotation to said adhering and pulling means. Means for cutting the tape means is positioned forwardly of said adhering and pulling means. A switch means is provided for actuating the motor continuously while said actuating means is engaged. Also a shaping means is positioned above the path of travel of the tape to urge the tape against the adhering and pulling means, the adhering and pulling means including a set of feed rollers. The shaping means is positioned between a pair of adjacent feed rollers, the lowermost edge of the shaping means being positioned below the uppermost edge of said pair of adjacent feed rollers forming a structural indentation in said tape.

Abstract: A small, handheld sheet material cutter has a pair of cooperating cutting wheels and a mechanism for easily adjusting the position of one of the cutting wheels in order to provide a lateral gap of varying width between the cutting edges of the two cutting wheels, thus permitting the cutter to cleanly cut sheet material of various thicknesses. The cutter also has a guide bar that can be used in combination with any sheet metal brake to provide straight cuts. Since the cutter need not be mounted on a sheet metal-brake, it can also be used freehand to cut curves and angles.