Writing instrument with sealing cap and additional rearward seal

Details Writing instrument with sealing cap and additional rearward seal Writing instrument with sealing cap and additional rearward seal

1984-01-27

1986-12-16

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

401108, B43K 900, B43K 712

Patent

active

046293485

ABSTRACT:
A writing instrument comprises a barrel having a front opening (216), a writing member (217) having a writing tip (220) on a front end thereof and disposed in the barrel for back-and-forth movement therein, a mechanism disposed between said barrel and the writing member (217) for locking the writing member (217) in an advanced position and returning the writing member (217) in a retracted position, a sealing body (206) pivotable about a single point in the vicinity of the opening (216) for opening and closing the writing tip (220), bias spring (213) disposed between the sealing body (206) and the barrel for normally urging the sealing body (206) to seal the writing tip (216), the writing member (217) pushing aside the sealing body (206) to release the writing tip against a force tending to seal the latter, the writing tip (220) being prevented from contacting the sealing body (206) when the writing member (217) advances, and a seal member for providing a seal between the barrel and the writing member (217) at a position behind the sealing body (216).

REFERENCES:
patent: 1235096 (1917-07-01), Beckett
patent: 1580987 (1926-04-01), Alford
patent: 2438231 (1948-03-01), Schultz et al.
patent: 3292593 (1966-12-01), Furuya
patent: 3399946 (1968-09-01), Tokorozawa et al.
patent: 3525573 (1970-08-01), Fend
patent: 3672783 (1972-06-01), Bajusz
patent: 4469462 (1984-09-01), Hashimoto et al.
patent: 4479732 (1984-10-01), Shimizu

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