Mechanical pencil

Details Mechanical pencil Mechanical pencil

1984-08-14

1986-11-04

Apley, Richard J.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401214, B43K 2116

Patent

active

046208119

ABSTRACT:
A mechanical pencil reduced in the number of the component parts and facilitating the assembling work, comprising an outer cylinder, a replaceable lead cartridge, a tip member including a cushion member capable of contracting according to writing pressure that works on the lead so that the lead is retracted into the tip member when an excessive writing pressure works on the lead to prevent the breakage of the lead, and a lead feeding mechanism which is constructed within the tip member prior to the connection of the tip member to the outer cylinder.

REFERENCES:
patent: 3379490 (1968-04-01), Schwartzman
patent: 3850531 (1974-11-01), Ackermann
patent: 3917418 (1975-11-01), Lanoie
patent: 4003664 (1977-01-01), Butka
patent: 4149813 (1979-04-01), Katz et al.
patent: 4371277 (1983-02-01), Kageyama
patent: 4382706 (1983-05-01), Hashimoto et al.

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