Mechanical pencil

Details Mechanical pencil Mechanical pencil

1979-03-30

1980-08-19

Yasko, John D.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

B43K 2122

Patent

active

042181534

ABSTRACT:
A mechanical pencil having first and second rotatable body members and a slider mounted for retractable movement in one of the members. The slider has an axial retainer for frictionally gripping the lead. A lead case is disposed within one body member having a lead gripping chuck connected to one end. A chuck tightening mechanism advances and tightens the chuck to supply lead to the slider having a predetermined length. Rotation of the two body members relative to each other is translated into a corresponding movement to the chuck tightening mechanism. A resilient or magnetic member may be placed in the slider to maintain contact with the tightening mechanism.

REFERENCES:
patent: 3724960 (1973-04-01), Hashimoto et al.
patent: 3728033 (1973-04-01), Seta et al.
patent: 4106874 (1978-08-01), Torii
patent: 4149813 (1979-04-01), Katz et al.

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