Measuring and testing – Muscular force
Patent
1975-10-29
1976-06-08
Queisser, Richard C.
Measuring and testing
Muscular force
G01K 510, G01K 522
Patent
active
039615324
ABSTRACT:
A disposable clinical thermometer of low cost and preferably mostly of plastic includes a stiff rod-like inner member having a longitudinal groove of like configuration extending its length. A baffle or lip is formed on one end of this rod to provide a restriction to the flow of fluid to the groove. This rod is inserted into a flexible and transparent tube which is a tight fit on the rod-like member. A plastic, rigid, liquid container forms one end of the thermometer and is bonded to the housing at the end which encloses the restriction on the rod. The other end of the outer housing is tightly closed. A colored fluid having a known expansion with the heating of the fluid is placed in the rigid container. This fluid contains a coloring material which as the colored fluid flows up the groove in the rod causes a color to form in the groove, which color remains even if the thermometer is cooled. Indicia showing a temperature range is printed on the outer tube or on adhesive clear tape which is secured to the outer housing.
REFERENCES:
patent: 2413959 (1947-01-01), Eisele
patent: 2447888 (1948-08-01), Young
patent: 2706761 (1955-04-01), Douglas
patent: 3469451 (1969-09-01), Eizenberg
patent: 3631721 (1972-01-01), Nollen
patent: 3688582 (1972-09-01), Gradishar
patent: 3745831 (1973-07-01), Rothstein
patent: 3872729 (1975-03-01), Ayres
Queisser Richard C.
Roberts Ralph R.
Shoon Frederick
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