Tape-type linear measuring instrument

Details Tape-type linear measuring instrument Tape-type linear measuring instrument

1978-06-13

1980-02-05

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 312, G01B 502

Patent

active

041864905

ABSTRACT:
This tape-type linear measuring instrument comprises a perforated tape adapted to be unwound from or wound on a drum enclosed in a case containing a tape-engaging toothed wheel possibly driven from a motor with the interposition of a speed reducer. Pick-up means responsive to reference marks carried by the wheel or by a member rigid therewith control the operation of an electronic up-and-down counter associated with means for the digital display of the measured length. A shifting pinion may be interposed between the winding drum and the tape-driving toothed wheel to enable the motor to drive the tape both ways. The perforations may be replaced by spaced notches, and a support wheel may be disposed under the tape in co-planar relationship with the driving wheel.

REFERENCES:
patent: 1237808 (1917-08-01), Ottinger
patent: 2014375 (1935-09-01), Carlson
patent: 2484817 (1949-10-01), Armond
patent: 3216515 (1965-11-01), Roberts
patent: 3364580 (1968-01-01), Lucia
patent: 3473751 (1969-10-01), Quenot
patent: 3780440 (1973-12-01), Taylor
patent: 4031360 (1977-06-01), Soule

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