Automatic thermograph

Details Automatic thermograph Automatic thermograph

1975-02-07

1976-03-16

Miller, Jr., George H.

Recorders

Combined with external recorder operating means

Well logging

346 72, 346139R, 733435, 73363, G01D 900, G01D 1516, G01K 570, G01K 502

Patent

active

039450171

ABSTRACT:
An automatic thermograph comprising a means for sensing a variation of temperature by use of a gas and a gas absorbing substance container therein; a recording section including a means for coverting said variation of temperature into a variation of pressure, a means for counteracting said converting means for actuating a lever according to the variation of pressure to turn a nib fixed on an extension of said lever and record the variation of temperature; and a cartridge containing therein a chart paper and removably attached to the recording section. With this invention, collecting data for controlling temperature in a cooled show-case or in a reservoir of perishable foods, blood or vaccines can be done with a thermograph which is low-priced, small-sized and easy to handle.

REFERENCES:
patent: 772035 (1904-10-01), Fulton
patent: 3119269 (1964-01-01), Hiscock
patent: 3487691 (1970-01-01), Johnson

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