B - Operations – Transporting – 43 – K
Patent
B - Operations, Transporting
43
K
207/14
B43K 21/06 (2006.01) B43K 21/20 (2006.01)
Patent
CA 1185208
ABSTRACT OF THE DISCLOSURE A continuous feed mechanical pencil includes a lead cartridge having a lead advancing mechanism responsive to forward axial movement of an actuator button protruding from the rear end of the instrument, the actuator button being fixedly attached to a pocket clip and extending a relatively short distance from the rear of the instrument housing so that the rear end of the actuator is shrouded by the rear end of the housing when the actuator button is fully depressed. SPECIFICATION The present invention relates in general to mechanical pencils having a push type lead advancing mechanism, and it relates in particular to a new and improved actuator mechanism which prevents the application of excessive force to the lead advancing mechanism. BACKGROUND OF THE INVENTION Push type mechanical pencils generally employ a rearward- ly extending actuator button which is depressed to advance the lead from the forward tip of the instrument. Push pencils of this type have two important advantages over mechanical pencils having a rotary or twist type lead advancing mechanism. One such advantage is that actuation is simpler and more convenient. A second advantage is the fact that the pencil need be loaded with lead much less frequently because a plurality of lead sticks placed in the cartridge are automatically fed seriatem to the lead advancing mechanism in the cartridge. Nevertheless, for -1-
409320
Herold Gerald C.
Jung Harley A.
Gowling Lafleur Henderson Llp
Parker Pen Company (the)
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