Writing instrument projectable by fluid pressure

Details Writing instrument projectable by fluid pressure Writing instrument projectable by fluid pressure

1982-04-02

1984-10-09

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

401 55, 401101, 401 65, B43K 2102, B43K 2400

Patent

active

044758340

ABSTRACT:
Projecting mechanisms for writing elements are actuated by applying pressure to the external casing of the instrument. The writing element is not latched in an exposed condition, therefore the writing element is only exposed when pressure is applied to the casing, as is done when writing with a pen. The projecting mechanism allows for projecting the writing element by applying pressure at substantially any circumferential point along the casing of the pen, or in one embodiment only along the longitudinal portion of the pen closest to the writing end.

REFERENCES:
patent: 3285228 (1966-11-01), Fisher
patent: 3576374 (1971-04-01), Lile
patent: 3883253 (1975-05-01), Naruse et al.
patent: 4270870 (1981-06-01), Hashimoto et al.
patent: 4358210 (1982-11-01), Hashimoto et al.

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