Electro-mechanical writing implement

Details Electro-mechanical writing implement Electro-mechanical writing implement

1998-02-05

2000-07-25

Eloshway, Charles R.

Coating implements with material supply

Projectable and retractable tool

401195, B43K 2102

Patent

active

060929510

ABSTRACT:
An article of manufacture for causing a ball point pen cartridge and associated tip to automatically extend from its housing when an actuator switch located at the front end of the pen housing is pressed by the user's finger. The pen tip and associated cartridge automatically retract when the user releases the pen. A D.C. motor coupled to a gear reduction assembly inside the pen housing causes an attached threaded sleeve to rotate within a stationary nut within the housing thereby driving the pen assembly forward or backward depending on the polarity of the electrical supply to the motor. Limit switches within the housing cause the pen assembly to stop at the proper locations. An alternate embodiment of the design substitutes a non-moving, conductive switch that operates on skin contact instead of a moving, mechanical type actuation within a standard electrical switch.

REFERENCES:
patent: 4037283 (1977-07-01), Moisiuk
patent: 4299506 (1981-11-01), Hashimoto
patent: 4350458 (1982-09-01), Murahara et al.
patent: 4634305 (1987-01-01), Herrnring

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