Method of producing a metrological scale and scale produced by s

Details Method of producing a metrological scale and scale produced by s Method of producing a metrological scale and scale produced by s

1989-06-15

1990-05-22

Haroian, Harry N.

Geometrical instruments

Distance measuring

By flexible tape

33706, 33494, 33493, G01B 310

Patent

active

049265660

ABSTRACT:
A metrological scale for use in optoelectronic scale reading apparatus comprising a tape made of spring steel and having a surface layer of copper. The scale has scale marks constituted by a zig-zag or other profile impressed into the surface layer by a rolling process. During rolling, the relatively soft copper is readily deformed to accept the profile while the spring steel resists plastic elongation of the tape.

REFERENCES:
patent: 41742 (1864-02-01), Jones
patent: 1249132 (1917-12-01), Leavens
patent: 2171504 (1939-08-01), Keyffel et al.
patent: 3409988 (1968-11-01), Zelnick
patent: 3996780 (1976-12-01), Germon
patent: 4338807 (1982-07-01), Ricono et al.
patent: 4477726 (1984-10-01), Reichl
patent: 4530230 (1985-07-01), Monks
patent: 4598564 (1986-07-01), Held

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