Safety flask for freeze drying

Details Safety flask for freeze drying Safety flask for freeze drying

1975-10-22

1977-05-24

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

Vacuum

F26B 1330, F26B 2514

Patent

active

040246485

ABSTRACT:
A safety flask for freeze drying being formed of chemically-resistant and shock-resistant materials, including a container flask, a cover assembly and a tube removably inserted through the cover assembly so as to be in communication with the interior of the container flask for connection to a vacuum source. Sealing means is mounted in the cover assembly to provide a fluid-tight seal between the tube and the cover assembly. A filter is removably mounted on the cover assembly over the point of communication of the tube with the container flask to prevent cross-contamination between samples and to prevent the sample from being withdrawn by the vacuum. A vacuum release device is mounted on the tube to permit easy removal of the flask.

REFERENCES:
patent: 3138937 (1964-06-01), Parkinson et al.
patent: 3246674 (1966-04-01), Kapeker
patent: 3293773 (1966-12-01), Frazer et al.
patent: 3474543 (1969-10-01), Bender et al.

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