Pen turret control system

Details Pen turret control system Pen turret control system

1988-04-28

1989-12-05

Lall, Parshotam S.

Boots, shoes, and leggings

346139R, 235462, G01D 1528, G05B 1912

Patent

active

048857017

ABSTRACT:
A control system for controlling a turret head in a pen plotter wherein the turret head and pen holder move in combination with the pen carriage to provide turret selectability at the writing site. Sensors and associated logic are provided for detecting the presence of a turret on the pen carriage, for sensing the presence and absence of pens in the turret and in the pen holder, for detecting the type of pen or other writing device being used and taking appropriate action responsive thereto, and for applying variable damping constants to the movement of the turret head. Control logic is disclosed for assuring reliable and optimum operation.

REFERENCES:
patent: 4135245 (1979-01-01), Kemplin et al.
patent: 4401996 (1983-08-01), Shirahata
patent: 4405931 (1983-09-01), Fujisawa
patent: 4488159 (1984-12-01), Fujiwara et al.
patent: 4496958 (1985-01-01), Brandt et al.
patent: 4503441 (1985-03-01), Tamukai
patent: 4533823 (1965-08-01), Vittorio
patent: 4533924 (1985-08-01), Takahashi
patent: 4567565 (1987-08-01), Haselby et al.
Hewlett-Packard Sales Brochure, "Introducing the Hewlett-Packard 7580 Drafting Plotter", Nov. 1987.

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