Pen pressure device

Details Pen pressure device Pen pressure device

1987-02-26

1988-07-12

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

Stylus feature

346 46, 346 49, G01D 930, G01D 1516

Patent

active

047573309

ABSTRACT:
In a pen pressure device including a carriage, a pen axially movably supported to the carriage in such a manner that a front end of the pen is opposed to a paper, a pen pressure spring for biasing the pen toward the paper, a return spring for biasing the pen in a direction apart from the paper; the improvement comprises a hammer mounted on the carriage and adapted to be biased by the pen pressure spring having a spring force greater than that of the return spring to thereby urge the pen, and a cam member for moving the hammer to a retracted position where the pen is not urged by the hammer.

REFERENCES:
patent: 4644371 (1987-02-01), Matsuura
patent: 4673954 (1987-06-01), Sakai

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