Electronic tape measure

Details Electronic tape measure Electronic tape measure

1986-11-24

1988-05-31

Cuchlinski, Jr., William A.

Geometrical instruments

Area integrators

Electrical

377 18, G01B 310

Patent

active

047472154

ABSTRACT:
An electronic measuring rule wherein the rule tape is formed integrally with a magnetic recording tape imbedded therein along the longitudinal axis of the tape rule. The recording tape which has spaced indicia signals recorded thereon is molded into a recess along the longitudinal center of a vinyl tape so that the vinyl tape covers the outer edges of the magnetic recording tape and the back thereof. A thin protective resin layer covers the recorded side to protect it from abrasions during use. Visible indicia are printed on both sides of the vinyl tape, top and bottom, on each lateral side so that the tape may be "read" visually in the usual manner from either lateral side, both top and bottom.
The recording tape portion of the measuring rule is "read" directly by a pick-up head located within the case adjacent the location where the tape exits the enclosing case.
An on-off switch turns on the calculator and display portion when the tape is pulled from the case, and off when less than an inch of the tape is extened. Their magnetic readings are converted to digital display.

REFERENCES:
patent: 3375590 (1968-04-01), Quenot
patent: 4185390 (1980-01-01), Tateishi
patent: 4316081 (1982-02-01), Washizuka et al.
patent: 4574486 (1986-03-01), Drechsler

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