Temperature measuring device

Details Temperature measuring device Temperature measuring device

Filed on

1985-03-07

Date issued

1990-12-25

Examiner

Dixon, Joseph L.

Patent Class

Boots, shoes, and leggings

Other Related Categories

36457103, 250339, 356 45, 374127, G01J 560, G06F 1520

Type

Patent

Status

active

Patent number

049808478

Description

ABSTRACT:
A temperature measuring device is disclosed which comprises a light source for emitting light the spectrums of which are constant with respect to time, a photoelectric transducer for sensing the emitted light with a plurality of predetermined different wavelengths to generate electrical outputs for each wavelength, and a microcomputer for computing a ratio based on the outputs generated from the transducer and for generating an output signal representing temperature corresponding to the ratio.

REFERENCES:
patent: 3795918 (1974-03-01), Sunderland
patent: 4075493 (1978-02-01), Wickersheim
patent: 4215275 (1980-07-01), Wickersheim
patent: 4303984 (1981-12-01), Houvig
patent: 4345840 (1982-08-01), Goetz et al.
patent: 4413324 (1983-11-01), Tatsuwaki et al.
patent: 4433232 (1984-02-01), Tachikawa et al.
patent: 4462699 (1984-07-01), Shaw et al.
patent: 4547774 (1985-10-01), Gould
patent: 4561789 (1985-12-01), Anderson
patent: 4576486 (1986-03-01), Dils
patent: 4594510 (1986-06-01), Brown et al.
patent: 4679157 (1987-07-01), Hirano et al.
patent: 4692875 (1987-09-01), Riley
English translation of Hirano JP. 58-139038 (1983).

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