Mechanical pencil with latching chuck actuator

Details Mechanical pencil with latching chuck actuator Mechanical pencil with latching chuck actuator

1988-10-28

1989-12-05

Apley, Richard J.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 83, 401 84, B43K 2116, B43K 2106, B43K 2404

Patent

active

048849111

ABSTRACT:
A mechanical pencil comprising a tubular casing, a centrally apertured conical tip piece connected to an end of the tubular casing to form a pencil tip, a lead engaging chuck device longitudinally movably mounted within the tubular casing, first spring for biasing the chuck device rearwardly relative to the chuck actuator, second spring for biasing the chuck actuator longitudinally forwardly and circumferentially relative to the tubular casing, actuation knob device longitudinally mounted on the tubular casing for rotation the chuck actuator against a resilient force of the second spring, engagement device for slidably engaging the chuck actuator against a resilient force of the second spring, and locking device for locking the chuck actuator to prevent a further rotation of the chuck actuator to thereby release the engagement between the actuation knob and the chuck actuator.

REFERENCES:
patent: 296302 (1884-04-01), Woodward

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