Appeal No. 2000-1488 Page 6
Application No. 08/826,832
Independent claim 2 recites a removable counterbalance
assembly comprising, inter alia, two enclosures, each
enclosure having a back wall connected to a side wall, the
enclosures positioned so that the side walls are in
opposition; a back panel connected between the back walls of
the enclosures; a bottom panel connected to the back panel and
between the side walls of the enclosures; a receiving aperture
defined by the side walls, the back panel and the bottom
panel; and a counterweight receivable in the receiving
aperture.
Eid teaches that when tractors are used under certain
load conditions as, for example, as a bulldozer or as a snow
blower there arises often a tendency for the tractor to tilt
forward and in the use of such tractors under such conditions,
there is a serious problem of keeping the rear end of the
tractor firmly on the ground. Eid then discloses an
attachment which may quickly and conveniently be mounted on
the frame rails of a tractor to provide a weight box or
receptacle for weights whenever it is desired to weight the
rear end of a tractor. When so mounted the box provides a
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