Displacement measuring and remote control apparatus with a sheav

Details Displacement measuring and remote control apparatus with a sheav Displacement measuring and remote control apparatus with a sheav

1988-10-11

1990-11-13

Haroian, Harry N.

Geometrical instruments

Distance measuring

Machine parts

33655, G01B 502

Patent

active

049692747

ABSTRACT:
A displacement measuring and remote control apparatus includes a sheave having a helical groove therein, a flexible belt wound on the sheave along the helical groove and connected securely to a movable member, an azimuth identification device connected to the sheave for indicating the rotational angle of the sheave. The rotational angle of the sheave can be realized by the azimuth identification device so that it may be converted into the displacement of the movable member. The belt is continually tensed by a tensing device. The apparatus can be used in a hydraulic servo system for the purpose of remotely controlling the movement of a hydraulic driving unit and a driven body.

REFERENCES:
patent: 2276302 (1942-03-01), Guttmann
patent: 3414978 (1968-12-01), Prow
patent: 3566477 (1971-03-01), Williams
patent: 3780440 (1973-12-01), Taylor
patent: 3791037 (1974-02-01), DiCiaccio
patent: 3812589 (1974-05-01), Schultheis
patent: 3922789 (1975-12-01), Sarrell

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