Force detector/indicator

Details Force detector/indicator Force detector/indicator

1995-04-03

1996-11-26

Chilcot, Richard

Measuring and testing

Dynamometers

Responsive to force

310339, G01L 100

Patent

active

055787665

ABSTRACT:
A force detector/indicator is disclosed which is provided with a piezoelectric plate that generates voltage when subjected to operation force or pressure, and a liquid crystal display (LCD) having a threshold value sufficiently lower than the generated voltage of the piezoelectric plate, the piezoelectric plate and the liquid crystal display being electrically connected such that generated voltage from the piezoelectric plate acts as an input signal to turn on the display of the liquid crystal display. In addition, a high-resistance conductor for discharge is provided between the two electrode lines making up a circuit connecting the piezoelectric plate and liquid crystal display.

REFERENCES:
patent: 2691159 (1954-10-01), Heibel
patent: 3808418 (1974-04-01), Conrad et al.
patent: 4748366 (1988-05-01), Taylor
patent: 4943752 (1990-07-01), Todd et al.

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