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US 4,755,074 AGranted
Pencil sharpener
OwnerMyrtle M. Robertsinventor
Life of this patent
Estimating the term…
Abstract
The disclosure is directed to a pencil sharpener device in which the sharpening element is slidably mounted within a support member for movement between a retracted position when not in use to a protracted position for use in sharpening the pencil. When in use, the sharpening element is movable to its protracted position to permit pencil shavings to fall free out of the support member during the sharpening operation. The disclosure further provides an eraser element or a combined eraser/marker assembly to be removably associated with the device.
Claims23
A pencil sharpener comprising:
- a head member having an opening therethrough;
- and
- a sharpening element slidably mounted within the through-opening of said head member;
- said sharpening element comprising a cylindrical housing having a blade mounted within said housing, said housing having an inlet opening adapted to receive a pencil to be sharpened and a discharge opening from which pencil shavings are discharged;
- said sharpening element disposed for movement within said head member between a retracted position wherein the discharge opening of said housing is positioned within said head member and a protracted position wherein said discharge opening is positioned outside said head member;
- said sharpening element, including said housing and said blade, being entirely positioned within said head member when said sharpening element is in its retracted position;
- and
- said blade being positioned within said housing in both of said retracted and protracted positions of said sharpening element;
- said sharpening element adapted to be engaged by inserted movement of the pencil within the inlet opening of said housing, whereby rotational movement of the engaged pencil and said sharpening element relative to each other when said sharpening element is in its protracted position causes the pencil to be sharpened by said blade, and enables the pencil shavings to fall free out of the discharge opening of said housing.
6 more elements
A combined pencil and pencil sharpener comprising:
- a pencil having a mounting end and a writing end;
- a head member having an opening therethrough, said through-opening having a first portion and a second portion axially adjacent one another;
- an abutment ledge formed at the juncture of said first and second through-opening portions;
- the mounting end of said pencil being removably mounted in the first through-opening portion of said head member when said pencil is in use for writing;
- and
- a sharpening element slidably mounted within the through-opening of said head member;
- said sharpening element comprising a cylindrical housing having a blade mounted therein, said housing having an inlet opening adapted to receive the writing end of said pencil to be sharpened and a discharge opening from which pencil shavings are discharged;
- said sharpening element disposed for movement within said head member between a retracted position wherein the discharge opening of said housing is positioned within said head member and a protracted position wherein said discharge opening is positioned outside said head member;
- said sharpening element, including said housing and said blade, being entirely positioned within said head member when said sharpening element is in its retracted position;
- and
- said blade being positioned within said housing in both of said retracted and protracted positions of said sharpening element;
- said housing having an outwardly projecting rail which abuts against said ledge when said sharpening element is in its protracted position to prevent said sharpening element from passing entirely through said head member;
- said sharpening element being engaged by inserted movement of the writing end of said pencil within the inlet opening of said housing, whereby rotational movement of the engaged pencil and said sharpening element relative to each other when said sharpening element is in its protracted position causes the writing end of said pencil to be sharpened by said blade, and enables the pencil shavings to fall free out of the discharge opening of said housing.
10 more elements
Dependencies are inferred from the claim text.