Agitating – By vibration
Patent
1980-08-25
1982-08-17
Jenkins, Robert W.
Agitating
By vibration
422 99, B01F 1100
Patent
active
043447120
ABSTRACT:
Test apparatus for microbiological cultures includes a vibrating member for placement thereupon of a vessel, such as a petri dish, containing a microbiological culture medium in the form of a liquid film, whereby vibration of the vessel will tend to equalize the thickness of a film formed by solidification of the medium, thereby promoting accuracy of test results. The apparatus further includes a table for placement thereupon of a plurality of vessels containing cultures, the table having a plurality of guides for use in accommodating vessels after removal from the vibrating members. Ramps are disposed on the table adjacent the vibrating members to guide the vessels to the desired position on the vibrating members and to elevate the covers of the vessels so that vibration can occur in a vertical as well as horizontal mode, thereby fostering the desired equalization of the thickness of the culture film in the vessel. A method for obtaining a layer of substantially uniform thickness from a liquid material includes the step of subjecting the liquid material to vibration during solidification.
REFERENCES:
patent: 3289610 (1966-12-01), Lounsbury
patent: 3295667 (1967-01-01), Kittle
patent: 3310292 (1967-03-01), Moore
patent: 3604689 (1971-09-01), Hutcheson
patent: 4264559 (1981-04-01), Price
Bliss Richard D.
Kienitz L. Michael
Pitts, Jr. James N.
Shaffer Steven D.
Jenkins Robert W.
The Regents of the University of California
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