Gas separation – Combined or convertible – Involving ash tray
Patent
1985-06-24
1987-04-21
Hart, Charles
Gas separation
Combined or convertible
Involving ash tray
55471, 55DIG29, 981153, 361384, B01D 5000
Patent
active
046593497
ABSTRACT:
A filter device on electrical switch cabinets, housings for electronic systems and like equipment to be maintained free of dust and impurities while being ventilated during operation includes a labyrinth filter disposed in a travel path of ventilating air upstream of an air intake opening of the equipment to be ventilated, the labyrinth filter having means for effecting a plurality of changes in direction of flow of the ventilating air therethrough so as to function in a manner similar to that of a mechanical labyrinth seal.
REFERENCES:
patent: 3364838 (1968-01-01), Bradley
patent: 3771293 (1973-11-01), Vest
patent: 3807148 (1974-04-01), Fike et al.
patent: 3962608 (1976-06-01), Forster et al.
patent: 4126269 (1978-11-01), Bruges
patent: 4534776 (1985-08-01), Mammel et al.
patent: 4539896 (1985-09-01), Thomas
Blaser Peter
Reithofer Jurgen
Rodi Anton
Greenberg Laurence A.
Hart Charles
Heidelberger Druckmaschinen AG
Lerner Herbert L.
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