Appeal No. 1998-1639
Application No. 08/424,259
claims
14 and 16 (paper number 20). In a second Amendment After
Final (paper number 22), claims 3 and 19 were amended.
Accordingly, claims 13, 19, 22 through 24, 32 and 33 remain
before us on appeal.
The disclosed invention relates to a chassis dynamometer
in which a stationary field coil induces eddy currents in a
rotor wheel to apply a braking force to the rotor wheel. The
rotor wheel is in the form of a drum open at one end with a
hollow braking section extending axially from the open end.
Claim 13 is illustrative of the claimed invention, and it
reads as follows:
13. In a chassis dynamometer having a base rotational
inertia for simulating the inertial and road load forces
which a motor vehicle would experience during operation
on a road bed, the dynamometer including a frame, at
least one roll rotatably mounted on the frame for engaging
at least one driven wheel of the vehicle, power absorbing
and inertial simulating means coupled to the roll
for applying a braking force to the roll, a force
transducer for providing a measure of the force applied to
the vehicle wheel minus the force attributable to the
dynamometer parasitic losses, means for providing a
measure of the roll speed and control means responsive to
the roll speed and the force applied to the vehicle wheel
for controlling the power absorbing means, the
improvement of the power absorbing and inertial
simulating means comprising:
2
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