Re-usable experimentation crucible

Details Re-usable experimentation crucible Re-usable experimentation crucible

1978-05-22

1979-02-20

Hall, George T.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

220359, 215274, B65D 4532

Patent

active

041402391

ABSTRACT:
A re-usable experimentation crucible comprises a cylindrical side wall, a base, an opening, an internal support surface located adjacent and directed towards the opening, a removable stopper supported and centered on the support surface, and an annular groove located in the side wall between said support surface and the opening. A ring of plastic material may be inserted between the side wall and the stopper and driven by extrusion in the direction of the bottom of the crucible. This causes the ring to deform and fill the annular groove and ensure sealed closure of the crucible.

REFERENCES:
patent: 1713224 (1929-05-01), Gunter
patent: 2037536 (1936-04-01), Richardson
patent: 2725252 (1955-11-01), Greer

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