US PATENT SUBCLASS 30 / 451
STATIC PENCIL SHARPENER

Current as of: June, 1999
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30 /   HD   CUTLERY

451STATIC PENCIL SHARPENER {5}
452  DF  .~> Plural, sequentially engaged cutters
453  DF  .~> With debris receiver {2}
456  DF  .~> Work piece drawn over transverse, single edge cutter
457  DF  .~> Having conical or cylindrical work guide {3}
462  DF  .~> Surface type cutter

DEFINITION

Classification: 30/451

STATIC PENCIL SHARPENER:

(under the class definition) Device adapted to shape a workpiece, consisting of or including a piece of attributable marking material (pencil), by the removal of a portion of an end or edge thereof, wherein the device comprises a cutter, and a holder or guide for the workpiece in static relation to the cutter.

(1) Note. A static relationship is denoted when, aside from adjustability (as when a cutter is yieldingly urged against the work), the shaping operation requires no movement of the cutter relative to the workpiece holder of guide.

(2) Note. A cutter having a notch into which the workpiece is inserted for the shaping operation (e.g., a V-shaped cutter) is considered to include a work guide for this and the indented subclasses. A mere edge or surface against which the workpiece is steadied for shaping the end or edge thereof is likewise considered to be a guide for these subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

151+, for a sheathed-blade sharpening device, which may be an attachment for a pencil and has no work holder or guide; and subclasses 169+ for a pencil-sharpening device having a scraping blade but no work holder or guide.

SEE OR SEARCH CLASS

144, Woodworking, 28.1+, for a pencil sharpening machine wherein the cutter moves relative to a support therefor or relative to a work holder or guide.

269, Work Holders,

1+, for a hand maneuvered work holder for a pencil-sharpening operation combined with a tool guide.

407, Cutters, for Shaping,

29.1+, for a pencil-sharpening file or rasp having no work holder or guide.

451, Abrading,

461+, for an abrasive pencil sharpener with a wiper to clean the cut surface.