Centrifuge tube cap

Details Centrifuge tube cap Centrifuge tube cap

1975-04-29

1980-02-26

Shoap, Allan N.

Chemistry: physical processes

150 8, 220319, 220327, 233 1A, 285255, B04B 1500, B65D 4500

Patent

active

041901967

ABSTRACT:
Centrifuge tube cap has a plug which fits into the open end of the tube. A reduced diameter stud on the plug has an axial bore and extends outside of the tube thereby forming a shoulder at the lip of the tube. The peripheral portion of the shoulder is beveled. An annular cap is placed over the open tube end and stud portion of the plug and secured thereto by a nut which, when tightened, wedges the tube wall between the cap and the shoulder portion of the plug. The cap has a downwardly extending skirt whose inner wall is flared outwardly. This wedging action compresses the wall of the tube between the plug and the cap thereby forming a seal. A post fill screw is threaded into the central bore formed in the plug.

REFERENCES:
patent: 1208620 (1916-12-01), Moser
patent: 2200082 (1940-05-01), Guarnaschelli
patent: 2846126 (1958-08-01), Warren
patent: 2889733 (1959-06-01), Vanderhoot
patent: 3150889 (1964-09-01), Watts
patent: 3258279 (1966-06-01), Johnsen
patent: 3285308 (1966-11-01), Stambaugh
patent: 3361449 (1968-01-01), Parro
patent: 3368599 (1968-02-01), Dailey et al.
patent: 3417899 (1968-12-01), Brown
patent: 3447712 (1969-06-01), Galasso et al.
patent: 3459369 (1969-08-01), Marks
patent: 3635370 (1972-01-01), Aomanauskas
patent: 3847819 (1974-11-01), Firth
patent: 3938735 (1976-02-01), Wright et al.

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