Apparatus for detecting amount of liquid nitrogen

Details Apparatus for detecting amount of liquid nitrogen Apparatus for detecting amount of liquid nitrogen

1985-12-13

1987-09-08

Miller, Jr., George H.

Weighing scales

With testing

177210R, 177245, 177DIG6, G01G 1952, G01G 314, G01G 1900

Patent

active

046917934

ABSTRACT:
An apparatus for detecting an amount of liquid nitrogen, has a table for supporting a Dewar vessel in which liquid nitrogen used for cooling a semiconductor radio detector is contained. A motion conversion mechanism is engaged with the table for converting the movement of the table in the up and down direction in response to changes in the weight of the liquid nitrogen in the vessel and amplifying and movement. The motion conversion mechanism includes a disk rotated by the amplified motion of the table, and a plurality of sensors adjacent the disk for detecting the rotational position of the disk which is representative of the weight of the liquid nitrogen in the vessel.

REFERENCES:
patent: 4072201 (1978-02-01), Wiesler
patent: 4366873 (1983-01-01), Levy et al.
patent: 4567467 (1986-01-01), Wiblin et al.

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