Double-chuck mechanical pencil

Details Double-chuck mechanical pencil Double-chuck mechanical pencil

1997-10-06

1999-11-23

Eloshway, Charles R.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Combined

401 67, A45D 4004, B43K 2122

Patent

active

059889136

ABSTRACT:
In a double-chuck mechanical pencil provided with an eraser, the torsional breakage of a lead gripped by a front lead chuck and a back lead chuck due to the turning of a lead tank caused when an eraser is used is prevented, and inconvenience to a lead supplying operation caused by the abrasion of the eraser is eliminated.

REFERENCES:
patent: 4180339 (1979-12-01), Katz
patent: 4240759 (1980-12-01), Matsumoto et al.
patent: 4538934 (1985-09-01), Brunner
patent: 4714365 (1987-12-01), Kageyama et al.
patent: 4872776 (1989-10-01), Kageyama et al.
patent: 4957384 (1990-09-01), Kageyama et al.
patent: 5015111 (1991-05-01), Petterson
patent: 5662425 (1997-09-01), Mitsuya
patent: 5683191 (1997-11-01), Kageyama et al.

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