Method of forming a thermometer structure

Details Method of forming a thermometer structure Method of forming a thermometer structure

1972-04-03

1976-08-24

Kucia, Richard R.

Plastic and nonmetallic article shaping or treating: processes

Prestressing solid body and uniting in stressed condition

264251, 264296, 264297, B29F 114

Patent

active

039767400

ABSTRACT:
A method of forming a thermometer structure, such as a low cost clinical thermometer, wherein the thermometer enclosure structure is formed of plastic as by molding. The capillary element of the thermometer is molded about a taut wire and is removed from the molding cavity by being urged along the wire to an exterior position. The thusly removed element is utilized as a pressure-applying means on the wire to hold the wire taught for subsequent molding of a subsequent element in the mold cavity. The subsequent element is then utilized to remove the previous element from the end of the wire and replace it as the means for holding the wire taut for molding a second subsequent element about the wire. A scale is located on the capillary element by accurately determining the top of the liquid column at a preselected temperature and coordinating the placement of the scale on the element relative to said determined level. One end of the capillary bore is closed by a heat sealing process wherein a projecting portion of the element is deformed to seal the bore end.

REFERENCES:
patent: 2438348 (1948-03-01), Morin
patent: 2577584 (1951-12-01), Hofreiter
patent: 2794211 (1957-06-01), Brown
patent: 3301931 (1967-01-01), Morin
patent: 3385553 (1968-05-01), Braun

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