Petri dish having two-position lid

Details Petri dish having two-position lid Petri dish having two-position lid

1994-01-27

1996-05-28

Shoap, Allan N.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

2203661, 206507, 4352991, B65D 5116, B65D 2106, C12M 122

Patent

active

055203027

ABSTRACT:
A petri dish for the culturing of microorganisms includes a rectangular dish having a floor plate and an endless peripheral dish wall which extends upwardly therefrom, and a two-position lid. The lid includes a ceiling plate, an endless outer peripheral lid wall extending downwardly therefrom, and an endless groove generally adjacent to the outer peripheral lid wall, which corresponds in shape to an upward end of the dish wall. When the lid is oriented in a first position entirely overlying the dish, the upward end of the dish wall is prevented from being fully inserted into the groove so that gas flow is permitted between the lid and the dish. When the lid is turned 180 degrees and placed in a second position entirely overlying the dish, the upward end of the dish wall extends into the groove. This has the effect of severely restricting or preventing gas flow between the lid and the dish. Beads and flanges are integrally molded onto exterior surfaces of the lid and dish to facilitate the stacking of petri dishes one atop another, and handling of the components.

REFERENCES:
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patent: 4743556 (1988-05-01), Ervin
patent: 5021351 (1991-06-01), Ervin
patent: 5366893 (1994-11-01), Stevens et al.
patent: 5388714 (1995-02-01), Zutler

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