Automatic sharp pencil

Details Automatic sharp pencil Automatic sharp pencil

1980-12-11

1983-06-07

Pieprz, William

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 54, 401 80, B43K 2122

Patent

active

043868657

ABSTRACT:
A knock type sharp pencil provided in its outer cylinder with a core holding mechanism composed of an inner cylinder coaxially arranged in the outer cylinder, a lead chuck inserted in the inner cylinder and including a chuck portion projecting out of the front end of the inner cylinder, a chuck ring inserted between a flange portion of the inner cylinder and the chuck portion of the lead chuck, a core case provided at its rear end with a knock portion and connected to the rear end of the lead chuck, and a spring means arranged in the inner cylinder and inserted between the flange portion of the inner cylinder and the front end portion of the core case, the spring means urging the core case backwardly.

REFERENCES:
patent: 1969085 (1934-08-01), Leistenschneider et al.
patent: 2049965 (1936-08-01), Leistenschneider
patent: 2319824 (1943-05-01), Moore
patent: 2525229 (1950-10-01), Lynn
patent: 2700959 (1955-02-01), Ginsele
patent: 3627434 (1971-12-01), Horie
patent: 3854825 (1974-12-01), Girella
patent: 4165981 (1979-08-01), Kageyama et al.
patent: 4171170 (1979-10-01), Kageyama et al.
patent: 4180339 (1979-12-01), Katz
patent: 4240759 (1980-12-01), Matsumoto et al.
patent: 4264227 (1981-04-01), Iwasaki

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