Appeal No. 96-4157
Application 08/142,772
sheet which might inhibit a proper seal with the filter
elements.
As conceded by the examiner (see page 5 in the answer),
Brunner does not teach, and would not have suggested, a dust
collector or filter installation method meeting the
limitations in independent claims 4 and 18 requiring locking
bars having free edges which act against filter cartridge
flange(s). The examiner's reliance on Berglund to cure this
deficiency is not well founded.
Berglund discloses an arrangement for clamping a filter
cassette within a filter housing. The clamping arrangement
includes L-shaped bars 9 within the filter housing for
slidably
supporting the filter cassette during insertion and
withdrawal, and a cam-type actuator disposed beneath the bars
(see Figures 2 and 3) for lifting them toward a connecting
frame 23 in the housing. In the upper position of the bars,
broad side surfaces thereon act against flanges on the filter
cassette to press the filter cassette into sealing engagement
4
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Last modified: November 3, 2007