Writing apparatus and method

Details Writing apparatus and method Writing apparatus and method

1993-03-10

1995-01-24

Cuchlinski, Jr., William A.

Geometrical instruments

Scriber

33 1M, B43L 1300

Patent

active

053832779

ABSTRACT:
In order to reduce an impact noise which is made when a pen lifting rail (5) is swung up into contact with a pen support arm (4) in a writing apparatus wherein the arm is swung up and down by swinging the rail up and down, in the present invention, immediately before the pen lifting rail (5) being swung up by de-energizing a solenoid, which is energized to swing down the rail, comes into contact with the bottom of the pen support arm (4), the solenoid is instantaneously energized to slow down the upward swinging of the rail to reduce the impact noise.

REFERENCES:
patent: 3665610 (1972-05-01), Schlau et al.
patent: 4315371 (1982-02-01), Kotani et al.
patent: 4356632 (1982-11-01), Anderka
patent: 4756086 (1988-07-01), Yajimi et al.
patent: 4835872 (1989-06-01), Alcantara Perez et al.
patent: 5012584 (1991-05-01), Galan et al.
patent: 5056229 (1991-10-01), Carlson

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