Twin beam displacement transducer

Details Twin beam displacement transducer Twin beam displacement transducer

1996-10-29

1998-05-26

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

2502311, G01B 1100

Patent

active

057574979

ABSTRACT:
A twin beam displacement transducer. The transducer utilizes two thin, flexible beams. The two beams either lay intimately on top of one another or both lay intimately on opposite sides of a common spacer. One of the beams, the neutral beam, is rigidly attached to the housing on one end and to the moving object on the other end. The other beam, the sliding beam, is rigidly attached only to the moving object. The other end of the sliding beam is free to move. As the object moves, both the neutral beam and the sliding beam bend. Such bending causes longitudinal displacement of the free end of the sliding beam within the housing. This motion is measured and correlated to the motion of the object, and an electrical output signal is created which is proportional to such motion.

REFERENCES:
patent: 3770353 (1973-11-01), Brown et al.
patent: 3867037 (1975-02-01), Litke
patent: 4226535 (1980-10-01), Heitmann et al.
patent: 4549808 (1985-10-01), Ernst
patent: 4572607 (1986-02-01), Krizik
patent: 4798951 (1989-01-01), Walker
patent: 4874941 (1989-10-01), Spillman, Jr.
patent: 5107846 (1992-04-01), Atlas
patent: 5229836 (1993-07-01), Nagano

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