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US 2001/0032373 A1Published application
Pencil having extended eraser life
OwnerAngelo Davisinventor
Life of this patent
Estimating the term…
Abstract
A writing device may include a writing portion, an eraser portion and an eraser holder that is movable along the axis of the writing portion, thereby allowing a user to move the eraser holder toward away from the eraser portion to expose additional eraser material.
Claims20
A writing device, comprising:
- a writing portion having a length, a circumference and first and second ends;
- an eraser having a circumference substantially equivalent to the circumference of the pencil portion, the eraser abutting the first end of the pencil portion;
- and
- an eraser holder having an inner surface, wherein the eraser holder is fit over and substantially encloses the circumferences of the portion and the eraser and wherein the eraser holder is adapted to be moved between first and second locations along the length of the portion so that when the eraser holder is moved from the first location to the second location a portion of the eraser that was covered by the eraser holder when the eraser holder was in the first location is exposed when the eraser holder is moved to the second location.
1 more element
A writing device, comprising:
- a writing portion having a length, a circumference, a first end and a second end;
- an eraser having a circumference substantially equivalent to the circumference of the pencil portion, the eraser abutting the first end of the pencil portion;
- and
- a sleeve having an inner surface including a raised substantially helical thread, wherein the eraser holder is fit over and substantially encloses the circumferences of the writing portion and the eraser and wherein the sleeve is adapted to be threaded onto the writing portion to move between first and second locations along the length of the writing portion when the sleeve is rotated with respect to the writing portion so that when the sleeve is moved from the first location to the second location a portion of the eraser that was covered by the sleeve when the sleeve was in the first location is exposed when the sleeve is moved to the second location.
1 more element
A writing device, comprising:
- a writing portion having a length, a circumference, first and second ends and an upset potion;
- an eraser having a circumference substantially equivalent to the circumference of the pencil portion, the eraser abutting the first end of the pencil portion;
- and
- a sleeve having an inner surface comprising an axial slot adapted to accommodate the upset portion on the writing portion to allow the sleeve to move between first and second locations along the length of the writing portion so that when the sleeve is moved from the first location to the second location a portion of the eraser that was covered by the sleeve when the sleeve was in the first location is exposed when the sleeve is moved to the second location.
1 more element
Dependencies are inferred from the claim text.