Coating apparatus – Immersion or work-confined pool type – With means for moving work through – into or out of pool
Patent
1987-11-25
1989-05-30
Beck, Shrive P.
Coating apparatus
Immersion or work-confined pool type
With means for moving work through, into or out of pool
118426, 118 50, B05C 302
Patent
active
048340197
ABSTRACT:
Tissue specimen treatment apparatus of the multi-chamber type having a plurality of containers, for instance arranged in a circle, and means for transporting a specimen for treatment to selected such chambers in a prescribed sequence, is characterized by a containment vessel disposed about at least the open tops of the containers and by cover means movable with the transporting means and evelosing the interior of the containment vessel so as to separate the specimen from the ambient atmosphere. The cover means preferably closely overlies the open tops of the containers to minimize the volume of the containment vessel, and is formed with a small volume transfer enclosure to receive a specimen during transport. The cover may have a close fit to the containment vessel, sufficient to restrict exchange of gases etc. between the external atmosphere and the containment vessel, or more positive sealing arrangements may be provided--e.g. labyrinth, flexible or liquid seals--to prevent flows between the vessel and the environment. Additionally or alternatively, positive venting of the containment vessel by withdrawal of its atmosphere may ensure that all leakages are into the vessel.
REFERENCES:
patent: 2324122 (1943-07-01), Welskopf
patent: 2788068 (1957-04-01), Blumenfeld
patent: 2872893 (1959-02-01), Kling
patent: 3110627 (1963-11-01), Welskopf
patent: 3762362 (1973-10-01), Lipshaw
patent: 3809008 (1974-05-01), Takahashi
patent: 4099483 (1978-07-01), Henderson
Bowman David J.
Gordon Alan J.
Lockett Jeffrey E.
Murry Michael
Bashore Alain
Beck Shrive P.
Shandon Scientific Limited
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