Writing instrument with drying-preventing mechanism

Details Writing instrument with drying-preventing mechanism Writing instrument with drying-preventing mechanism

1987-11-06

1991-09-17

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

401108, B43K 900

Patent

active

050489909

ABSTRACT:
A cap-less writing instrument having a mechanism which prevents the writing member from drying out. The writing instrument includes a hollow body; a writing member having a writing tip accommodated in the hollow body; a seal for sealing the writing tip, the seal including a seal cylinder provided with an opening at a front end thereof, a cover for sealing the opening of the seal cylinder, and a sealing member provided between the seal cylinder and the writing member; a mechanism for moving the writing member from the writing position to a retracted position; and a connector for connecting the writing member to the cover while allowing the writing member to move the writing position and causing the cover to close the opening of the seal cylinder. The connector is either a thread-like member or a bendable bar-like member.

REFERENCES:
patent: 2035555 (1936-03-01), Landau
patent: 2092459 (1937-09-01), Kutter
patent: 2097160 (1937-10-01), Locurto
patent: 2240992 (1941-05-01), Landau
patent: 2401711 (1946-06-01), Smith
patent: 3292593 (1966-12-01), Furuya
patent: 4540300 (1985-09-01), Midorikawa
patent: 4544297 (1985-10-01), Grossiord
patent: 4629348 (1986-12-01), Hashimoto et al.

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