Appeal No. 96-4157
Application 08/142,772
Reference is made to the appellant's brief (Paper No. 18)
and to the examiner's answer (Paper No. 19) for the respective
positions of the appellant and the examiner with regard to the
merits of this rejection.
Brunner, the examiner's primary reference, discloses a
dust collector in the form of a filter unit 10. The unit
includes a housing 11 divided by an apertured tube sheet 14
into a lower
dirty air chamber 15 and an upper clean air chamber 16,
flanged filter elements 22 mounted in the lower chamber in
alignment with respective apertures in the tube sheet,
elongate rails 44 for slidably supporting the filter elements
as they are inserted into and withdrawn from the unit, and
locking bars 32 pivotally mounted adjacent respective rails
for lifting the filter elements from the rails into sealing
engagement with the tube sheet. The locking bars act against
the flanges of the filter elements via springs 35 disposed on
the upper surfaces of the locking bars. The purpose of the
springs is to accommodate surface irregularities on the tube
3
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Last modified: November 3, 2007