Mechanical pencil
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United States of America Patent
Stats
-
Jun 30, 1981
Grant Date -
N/A
app pub date -
Apr 10, 1979
filing date -
Apr 12, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanical pencil in which a tubular casing is formed with a lead-guiding passage which has a leading end open outwardly away from the casing. A lead is advanced through the passage by a collet movable between a first position in which the lead is clamped and a second position in which the lead is released. An element normally presses the lead, when the latter is in the passage, against an inner surface of the passage for preventing undesirable sliding of the lead along the passage when the collet releases the lead.
First Claim
Family
International Classification(s)
Cited Art Landscape
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