Abstract: A gear assembly that includes a cutting gear having an outer edge and an inner edge, wherein a plurality of gear teeth is formed on the outer edge thereof; and an internal gear having an outer edge and an inner edge. The internal gear further includes a plurality of gear teeth formed on the inner edge thereof, wherein the gear teeth formed on the inner edge of the internal gear are adapted to engage the gear teeth formed on the outer edge of the cutting gear; a plurality of troughs, wherein each trough in the plurality of troughs is formed between two of the gear teeth formed on the inner edge of the internal gear; and a plurality of debris discharge channels, wherein each debris discharge channel is formed at the bottommost portion of each trough and extends away from the trough toward the outer edge of the internal gear.

Abstract: A cutter assembly for an electric pencil sharpener has a cutter bracket and a cutter. The cutter bracket has a pencil sharpening hole and an engaging structure. The pencil sharpening hole is defined in the cutter bracket for a pencil to be inserted into the pencil sharpening hole. The engaging structure is formed on the cutter bracket to engage a rotating frame in the electric pencil sharpener. The cutter is mounted rotatably on the cutter bracket. Accordingly, the cutter assembly is replaceable for the electric pencil sharpener when the cutter of the cutter assembly is damaged or worn.

Abstract: An electric pencil sharpener includes a housing unit having an opening, a driving member driven by a motor, a cutting unit, and a panel unit. The cutting unit includes an outer frame mounted removably in the housing unit and including a ring gear, an inner frame disposed pivotally within the outer frame, and at least one cutting member disposed pivotally on the inner frame. The inner frame has a driven portion connected co-rotatably and removably to the driving member, and a cutting groove. The cutting member has a blade portion adjacent to the cutting groove, and a planetary gear portion meshing with the ring gear. The panel unit is mounted removably to the housing unit for covering the opening, and has a pencil-feeding hole. When the panel unit is removed from the housing unit, the cutting unit can be taken out of the housing unit through the opening.

Abstract: An electric pencil sharpener includes a motor, a transmission subassembly and a cutter subassembly driven by the motor, a feeding subassembly and at least one resilient adjusting means. The feeding subassembly includes a feeding gear set coupled to the transmission subassembly and two feeding rollers adapted to sandwich a pencil to be sharpened, at least one feeding roller is driven by the feeding gear set. The pair of brackets is arranged in parallel, respectively defining slide ways to movablely support the feeding rollers. A feeding space is defined between the two brackets. The at least one resilient adjusting means connects the two feeding rollers outside or inside the feeding space, adapted for keeping the feeding rollers nipping the pencil and engendering a pencil feeding friction.

Abstract: An electric multi-pencil sharpener includes an entering pencil vase, a sending mechanism, a hustling mechanism, a sharpening mechanism, and an exit pencil vase. The entering pencil vase includes a pushing mechanism for pushing pencils. The hustling mechanism is for clamping pencils to take the pencils into or out of the sharpening mechanism. The sharpening mechanism is for sharpening the pencils. The exit pencil vase has an exit mechanism. The sending mechanism connects the pushing mechanism, the hustling mechanism, and the exit mechanism, to move the pencils from the pushing mechanism to the hustling mechanism and move the pencils sharpened by the sharpening mechanism to the exit mechanism.

Abstract: A pencil sharpener having a sharpening sub-assembly for sharpening pencils, and first and second external shells having internal ribs defining surfaces for supporting the sharpening sub-assembly. Components of the sub-assembly are placed into corresponding portions defined by the internal ribs. The ribs ensure proper alignment of the components relative to the shell and each other, e.g. in the x- and y-directions. All components may be placed in the shell in a single direction, e.g. in a single axial direction (the z-direction). The components of the pencil sharpener are mounted in place upon fastening together of the first and second external shells. No internal or additional fasteners are required. The sharpening sub-assembly may include an electric motor, a gear assembly, and a cutter assembly including a cutter gear module having an annular ring gear, acting as a carrier support, and housing a pencil insertion switch and/or a receptacle presence switch.

Abstract: A portable, handheld sharpener having an elongated body with loop attachments, a battery-operated DC motor with speed reducing gears and a gear plate and a rotatable sharpening unit. A pouch-shaped waste shavings receptacle detachably attached to the body provides a larger cross-sectional dimension ergonomically contoured to fit within the grip of a hand while providing increased internal space for waste shavings storage. An actuator button is molded into the receptacle and is partially circumscribed to provide a hinge-like action to engage a leaf spring connecting the battery source to the motor and also provides a momentary operation of the sharpener while in the original retail packaging. The actuator button will not operate when the receptacle is detached from the sharpener and the internal sharpening unit is exposed, thus acting as a safety feature.