Patent ID: 7364662

Claim:
A scraper adjustment mechanism for adjusting the distance between an edge of a scraper and a filter assembly surface positioned in a filter assembly housing and wherein the housing includes an inspection port, said scraper adjustment mechanism comprising: an inspection cover comprising a projection that passes through the inspection port when said cover is installed at said inspection port, said projection comprising a recess in a first surface of said inspection cover, said inspection cover further including a plurality of passageways from said first surface to a second opposite surface of said inspection cover; a scraper having a scraper edge and an upper portion, said upper portion being movable within said recess and said upper portion comprising a first angled surface; a wedge portion that is movable within said recess and said wedge portion comprising a second angled surface corresponding to said first angled surface, said first and second angled surfaces being in contact with each other such that when said wedge portion is displaced with respect to said upper portion said portions are either tightened against each other or are permitted to move; a pair of elongated members having first and second ends, said first ends being fixedly secured within said wedge portion and said upper portion, respectively, said second ends being passed through respective ones of said plurality of passageways and wherein said second ends protrude from said second opposite surface and can be rotated for adjusting the distance between the edge of the scraper and the filter assembly surface to a desired position.