Mechanical pencil
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 7, 1982
Grant Date -
N/A
app pub date -
May 23, 1980
filing date -
Apr 21, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotational slide type mechanical pencil having front and rear relatively rotatable bodies with a lead case disposed therein. A chuck which is rigidly coupled to the case firmly grips the lead in writing positions of the pencil. A chuck tightening member is provided having a chuck receiving portion which engages and tightens the chuck. A slider which is movable back and forth through a predetermined distance and is disposed forwardly of the chuck frictionally grips the lead. A conversion mechanism is provided for converting rotational movement of the rear axial body to linear movement of the chuck tightening member whereby the rotational movement of the second body moves the slider forwardly extending a portion of the slider through the front opening of an axial hollow body and extending the lead therethrough.
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