Temperature data recorder

Details Temperature data recorder Temperature data recorder

1991-10-22

1992-12-01

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

With specified recording arrangement

346 33TP, 346136, G01K 0102

Patent

active

051674530

ABSTRACT:
A recorder is disclosed for producing a continuous data record and comprises a case, a strip chart which is wound from a chart storage compartment onto a spring-driven take-up spool, and a speed-reducing governor comprising a gear train which is operatively connected to a hub and spoke assembly immersed in small spheres or balls, preferably of environmentally impervious material such as glass. The sphere-immersed paddle wheel approximates the drag of viscous fluid systems, with advantages which include independence of drag characteristics from temperature variation, simplicity, and easy speed adjustment, that is, the size of the spheres can be used to change the speed of the recorder.

REFERENCES:
patent: 3167966 (1965-02-01), Ashleman
patent: 3910119 (1975-10-01), Maxwell
patent: 3919632 (1975-11-01), Roerty
patent: 4007637 (1977-02-01), Nakagawa et al.
patent: 4135400 (1979-01-01), Maxwell et al.
patent: 4755063 (1988-07-01), Nakagawa et al.

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