Measuring and testing – Muscular force
Patent
1979-05-21
1980-10-28
Goldberg, Gerald
Measuring and testing
Muscular force
73374, 128736, G01K 508, G01K 522
Patent
active
042299756
ABSTRACT:
A throwaway thermometer structure (10,110) comprising essentially a synthetic resin wall member (13,113) having a thin gas impermeable layer (11,111) defining the inner capillary bore (12,112) thereof. The outer wall member effectively defines a jacket and the inner layer effectively defines a core tube. Interlock structure (20,120) is provided for effectively accurately maintaining the longitudinal disposition of the jacket and core tube. Such maintained disposition provides effective accurate maintained disposition of a scale (17) or the like, provided on the jacket portion of the thermometer. In one form, the interlock (20) may be directly between the jacket and the core tube. In an alternate form, the interlock (120) is indirectly between the jacket and core tube, being effectively provided between the reservoir bulb (114) and the core tube (111), with the reservoir bulb being fixedly secured to the jacket. The interlock structure may further define a constricted portion (23,123) of the capillary bore for releasably preventing return of the indicator liquid to the reservoir bulb upon completion of the temperature sensing operation. The jacket may be molded in place or provided as a preformed element, as desired.
REFERENCES:
patent: 1321743 (1919-11-01), Hillenbrand
patent: 2651203 (1953-09-01), Lamb
patent: 2677965 (1954-05-01), Saffir
patent: 2712237 (1955-07-01), Margolis
patent: 3490287 (1970-01-01), Coben
patent: 4108002 (1978-08-01), Rowe
Corr Denis E.
Goldberg Gerald
Rowe Charles L.
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