B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/72
B01D 46/52 (2006.01)
Patent
CA 1322535
Abstract Of The Disclosure An air filter assembly includes an outer casing having end, rear and downstream portions which are generally planular and thus easily settable on the floor during installation, with the downstream portion being mountable flush to a furnace or the like. An inner filter-holding drawer is provided for easy insertion and removal from the open front casing portion. At least one end wall of the casing is provided with a springable latch adjacent the casing front opening and which snappingly engages and holds a cover in place when the drawer is within the casing. The drawer end walls include external grooves which slide over rails correspondingly mounted internally of the casing side walls. The tolerances are such that the grooves are wider than the rails. Protrusions are disposed on the downstream sides of the rail rear end portions and are engaged by the downstream groove edges as the drawer reaches its rearmost position, thus forcing the drawer's rear end portion downstream so that the grooves' rear upstream edges move into sealing engagement with the upstream rear end portions of the rails. A cam is disposed on the down- stream groove sides of the drawer at their front end portions, the cam forcing the drawer's front end por- tion to move transversely on the rails in a downstream direction so that the upstream front edge portions of the grooves seal against the rails. The downstream shifting of the drawer compliments the operating air flow downstream through the unit, thus sealing the upstream sealing surfaces.
546291
Marks & Clerk
Research Products Corporation
LandOfFree
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