Lead loading mechanical pencil
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1987
Grant Date -
N/A
app pub date -
Sep 14, 1981
filing date -
Nov 8, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanical pencil having an exchangeable lead storing container has a feeding mechanism provided at one end with a coupling pin which snugly fits a coupling recess formed in the storing cartridge. The feeding opening connecting the interior of the cartridge with the central passage in the coupling pin has normally a smaller diameter than that of leads stored in the cartridge, and only upon completing the coupling the pin enlarges the feeding opening to such an extent that the stored leads can freely pass one after the other into the feeding mechanism of the pencil.
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Family
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Cited Art Landscape
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