Retractable-lead mechanical pencil
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 18, 2000
Grant Date -
N/A
app pub date -
Sep 28, 1998
filing date -
Jan 31, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A slider type mechanical pencil has an outer tubular member having a front end and a rear end. An inner tubular member is disposed in the outer tubular member for axial movement therein and has a lead advancement mechanism for axial movement within the outer tubular member to advance a pencil lead toward the front end of the outer tubular member. A slider has a first end portion projecting from the rear end of the outer tubular member and a second end portion. The slider extends into the outer tubular member so that the first end portion of the slider can be pressed in the axial direction relative to the outer tubular member to move the inner tubular member and the lead advancement mechanism in the axial direction toward the front end of the outer tubular member. A pusher member extends into the outer tubular member for axial movement therein and has a first end portion projecting from the rear end of the outer tubular member and a second end portion. The pusher member extends into the slider so that in a first position of the pusher member, the first end portion of the pusher member and the first end portion of the slider can be simultaneously pressed to move the inner tubular member and the lead advancement mechanism in the axial direction relative to the outer tubular member. In a second position of the pusher member, the first end portion of the pusher member projects from the first end portion of the slider and can be pressed to move the lead advancement mechanism in the axial direction relative to the slider, the inner tubular member and the outer tubular member to advance the pencil lead toward the front end of the outer tubular member.
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