Method and device for obtaining numerical coordinates of a point

Details Method and device for obtaining numerical coordinates of a point Method and device for obtaining numerical coordinates of a point

1984-11-02

1989-03-21

Little, Willis

Geometrical instruments

Miscellaneous

Light direction

33 27K, 33 1PT, 33444, G01B 300

Patent

active

048131466

ABSTRACT:
A device for obtaining numerical coordinates of a point or a set of points comprises two stretched strips having a common end attached to a stylus which is placed on a point or moved over a set of points. Each of the other ends of each strip is supplied from a strip reserve consisting of pulleys connected to a restoring spring for applying tension to the strips. Variations in length of the strips are measured in discrete values by a mechanism associated with a computer for correcting the effective length of each strip.

REFERENCES:
patent: 3553842 (1971-01-01), Gerber et al.
patent: 3564533 (1971-02-01), Linn
patent: 3758949 (1973-09-01), Fausel et al.
patent: 4069588 (1978-01-01), Hoppe
patent: 4412383 (1983-11-01), Landa
patent: 4500749 (1985-02-01), Khoshnevis

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