Method and apparatus for dosing and dispensing mercury into disc

Details Method and apparatus for dosing and dispensing mercury into disc Method and apparatus for dosing and dispensing mercury into disc

1988-08-31

1992-03-31

Skaggs, H. Grant

Dispensing

With discharge assistant

Actuated by pressure of or suction on material to be dispensed

358107, 222263, 222399, G01F 1100

Patent

active

051000318

ABSTRACT:
An apparatus and method for accurately dosing and dispensing mercury. The apparatus includes a reservoir containing mercury and a capillary tube extending from the reservoir of mercury to a dispensing needle and having an inlet located intermediate a pair of remotely located ends. The apparatus adjusts the height of a column of the mercury within the capillary tube and measures the height of the mercury column. In one embodiment, a digital vision system comprising a TV camera and monitor digitizes the image of the mercury column within the capillary tube and automatically determines the height of the column. A source of gas is supplied to the inlet in the capillary tube such that a predetrmined amount of mercury is separated from the mercury column and dispensed from the other one of the remotely located ends of the capillary tube.

REFERENCES:
patent: 1650210 (1927-11-01), Hasty
patent: 3223291 (1965-12-01), Thomas
patent: 3320053 (1967-05-01), Lehman
patent: 3771366 (1973-11-01), Thulin
patent: 3847581 (1974-11-01), Peters et al.
patent: 3908077 (1975-09-01), Stut et al.
patent: 4319568 (1982-05-01), Tregoning
patent: 4731650 (1988-05-01), Hadfield et al.

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