Mechanical pencil

Details Mechanical pencil Mechanical pencil

1981-05-04

1983-05-10

Pellegrino, Stephen C.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 65, B43K 2122

Patent

active

043827063

ABSTRACT:
A mechanical pencil including a main body divided into first and second members which are rotatable relative to one another. An inner mechanism is provided, primarily in the first member of the body, including a chuck for gripping leads, a chuck tightening member for tightening the chuck disposed around the chuck, a chuck tightening member receiver, and a lead case coupled at a front end portion to the chuck. In a preferred embodiment, a push member is coupled at a front end to the lead case while a spring biases the inner mechanism rearwardly. A mechanism is provided for converting the relative rotation of the first and second members to axial movement of the inner mechanism between retracted and writing positions.

REFERENCES:
patent: 3728033 (1973-04-01), Seta et al.
patent: 3813175 (1974-05-01), Katz
patent: 4106874 (1978-08-01), Torii
patent: 4149813 (1979-04-01), Katz
patent: 4218153 (1980-08-01), Hashimoto
patent: 4269524 (1981-05-01), Hashimoto et al.

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