Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Patent
1992-06-24
1994-06-07
Chiesa, Richard L.
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
55486, 454 49, 454365, B01D 3502
Patent
active
053186079
ABSTRACT:
A grease filter and collection assembly for roof ventilators and the like includes a frame structure having a generally central aperture through which a grease discharge vents projects when the frame structure and trap assembly are installed surrounding the vent, and a replaceable grease-trapping material is removably secured in the frame structure so that the grease-trapping material is exposed vent. In a preferred embodiment, the frame structure is assembled from extruded frame members which integrally include a plurality of channels for securing and mounting the assembly for retaining the grease-trapping material within the frame structure. Upper and lower channels accommodate corner connections of the frame members. The frame members have side walls which peripherally enclose the grease-trapping material which is tucked between the upper and lower channel inwardly extending from the side wall. An additional channel is exteriorly exposed in each of the frame members to enable access to the fasteners and hardware for mounting the collection assembly on a roof or wall through which the vent projects. A preferred grease-trapping material includes a layered composite of grease filtering and trapping materials in which an upper-porous layer for trapping particulate debris is also permeable for passage of liquid grease therethrough into a lower layer which absorbs and retains the grease.
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Cook; "Cook's Grease Terminator"; Loren Cook Co.; Mar., 1989.
Bain Charles E.
Barry Christopher S.
Chwala Kevin R.
Jodoin Jean J.
Malloy Patrick A.
Chiesa Richard L.
Dundee Manufacturing Co. Inc.
Grease Guard, Inc.
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