Measuring and testing – Muscular force
Patent
1977-07-27
1979-06-26
Goldstein, Herbert
Measuring and testing
Muscular force
264 22, G01K 108
Patent
active
041589661
ABSTRACT:
An improved thermometer which is case hardened and includes a total enclosure composed of a pair of first and second layer members covering the stem portion and the bulb portion respectively of the thermometer. A substantially transparent plastic material layer member covers the stem portion of the improved thermometer and has an index of refraction which is sufficiently high to allow a user to visually interpret the location of an internally contained heat expandable substance in relation to indicia formed on the stem portion. Additionally, the first layer member is irradiated from a source of soft Beta rays for hardening the outer surface layer of the first layer member. The bulb section of the improved thermometer is enclosed by a second thermally conductive layer member. Both the first and second layer members are joined to form a total enclosure for the thermometer throughout the extended length of both the bulb and stem portions. Additionally, an increased amount of substantially transparent plastic material is added to the terminal end of the stem portion of the improved thermometer in order to provide a cushioning effect under dynamic load when the thermometer inadvertently falls to an external surface.
REFERENCES:
patent: 2677965 (1954-05-01), Saffir
patent: 2805072 (1957-09-01), Smith
patent: 3247012 (1966-04-01), Burlant
patent: 3490287 (1970-01-01), Coben
patent: 3623940 (1971-11-01), Gladstone
patent: 3711391 (1973-01-01), Feinberg
LandOfFree
Case hardened thermometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Case hardened thermometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Case hardened thermometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1555276