Appeal No. 2000-2064
Application No. 08/781,412
"ALL AIR RIDE" embodiment on page 2 of RIDEWELL and as reproduced
on page 4 of the examiner's answer). The examiner notes that
RIDEWELL lacks a drive axle suspension which is roll compliant.
To address this difference, the examiner turns to Brandt, urging
that this reference discloses a drive axle suspension (Fig. 1)
which is roll compliant. From the collective teachings of
RIDEWELL and Brandt, the examiner has concluded that it would
have been obvious to one of ordinary skill in the art "to modify
RIDEWELL by providing the drive axle with a roll compliant
suspension" because this would provide certain advantages noted
by the examiner on page 5 of the answer. The examiner also
recognizes that the combination of RIDEWELL and Brandt lacks a
wheel slip and traction control system including means for
transferring weight from the tag axle to the drive axle. In this
instance, the examiner relies upon the teachings of ELECTRAC
noted on pages 5 and 6 of the answer and concludes that it would
have been obvious to one of ordinary skill in the art to further
modify RIDEWELL by providing a wheel slip and traction control
system like that claimed by appellant because this would provide
better traction in slippery conditions (i.e., safer operation).
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