Distance measuring device

Boots – shoes – and leggings

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Details

33138, 33139, 33140, 33142, 364561, 377 17, 377 18, G01B 2104

Patent

active

047792124

ABSTRACT:
A distance-measuring device, comprises a housing; a flexible measuring tape reelable into and out of the housing for measuring lengths; a shaft encoder rotatable by the flexible-measuring tape when reeled into and out of the housing and outputting digital pulses for each unit length of the measuring tape so reeled into or out of the housing; and an up/down counter adding the electrical pulses outputted when the tape is reeled out of the housing, and subtracting the electrical pulses outputted when the tape is reeled into the housing, and thereby providing an indication of the length of the measuring tape reeled out of said housing. Also described is a device for measuring the two coordinates of a point in space, by providing two such housings mounted on a common base, and a flexible measuring tape reelable into and out of each housing at locations spaced a predetermined distance between the two housings, the two tapes being connected at a single connection point whose coordinates are to be determined.

REFERENCES:
patent: 3780440 (1973-12-01), Taylor
patent: 4181959 (1980-01-01), Tateishi
patent: 4213035 (1980-07-01), Washizuka et al.
patent: 4242574 (1980-12-01), Grant
patent: 4495583 (1985-01-01), Punater
patent: 4506336 (1985-03-01), Hird
patent: 4575944 (1986-03-01), Lin

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