Geometrical instruments
Patent
1975-01-23
1976-02-24
Lake, Roy
Geometrical instruments
339176T, H01R 3900
Patent
active
039401995
ABSTRACT:
A rotary contactor for use in conjunction with a thermocouple mounted on a container so as to permit measurement of the temperature of the contents at an interior location while the container is being rotated about a longitudinal axis. The rotary contactor device includes a pair of contact pins one of which has an axially projecting portion and which is formed of a metal corresponding to that of one of the thermocouple materials while the other contact pin is formed of a metal corresponding to the dissimilar thermocouple material. A slip ring concentrically embraces a section of the projecting portion of the one pin and is suitably insulated therefrom while being electrically connected to the other pin. The slip ring is formed of the same metal as the pin to which it is electrically connected. A sleeve bearing and a spring-loaded brush are mounted on the slip ring and are formed of the same metal as the slip ring. A second sleeve bearing and a second spring-loaded brush are mounted directly on a portion of the axially projecting pin and are likewise formed of the same metal as that pin. A pair of flexible electrical conductors connect one set of sleeve bearing and spring-loaded brush to one stationary lead to a potentiometer. This set of flexible conductors and the lead connected thereto are formed of the same metal as the slip ring. A second set of flexible conductors are connected to the sleeve bearing and spring loaded brush mounted directly on the pin and are formed of the same metal as that pin and these conductors are connected to a second lead formed of the same metal and adapted to be connected to a potentiometer.
REFERENCES:
patent: 2344192 (1944-03-01), Wantz
patent: 3654591 (1972-04-01), Jayaram et al.
Jones DeWalden W.
Lake Roy
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