Coating implements with material supply – With signal or indicator
Patent
1980-05-14
1982-11-23
Pieprz, William
Coating implements with material supply
With signal or indicator
401 65, B43K 2900
Patent
active
043602800
ABSTRACT:
A mechanical pencil of knocking operated type includes an electrical indicator which provides a visible or audible indication of the presence or absence of a writing lead in the mechanical pencil. A power supply in the form of a cell or storage battery is loaded into a pen body. A first and a second channel are provided which electrically connect the power supply with the indicator. The first channel is associated with one of the poles of the power supply, and is formed by a collet chuck and a lead guide sleeve which are disposed within the pen body in spaced relationship from each other. The second channel is associated with the other pole of the power supply, and includes a switch which is operated in response to a knocking operation which drives the collet chuck. When a writing lead is present between the collet chuck and the lead guide sleeve, the both members are electrically connected together through the lead, whereby the first channel is rendered conductive. The second channel is rendered conductive when the switch is turned on in response to the knocking operation. Consequently, if any remaining lead is available, the indicator is operated each time the knocking operation takes place, but when the final lead is consumed to a degree that it is removed from the collet chuck, the knocking operation can not operate the indicator.
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Hashimoto Jun-ichi
Sekiguchi Tomozo
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Pentel Kabushiki Kaisha
Pieprz William
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