Appeal No. 1997-2162
Application 08/280,430
once the desired height is reached. Nordskog teaches a
wheelchair lift with a gate at one end where a removable ramp
connected to the edge of the cabin platform allows entry into
the lift car. Schauder is concerned with a control system for
an elevator where switches on the side of the car detect the
location of the car in relation with the floor at which the
elevator is selected to stop. In particular, Schauder
discloses in col. 1, lines 16 through 23:
..., reducing the speed of the car according to a
predetermined deceleration schedule, to stop the car
smoothly at the terminal floor.
and in col. 1, lines 42 through 45:
..., the present invention is a feedback controlled
elevator system of the traction type in which the normal
slowdown and stopping of an elevator car is controlled by
a speed pattern SP (emphasis added).
Schauder is therefore concerned with stopping of the car at
any floor along the range of the elevator vertical movement.
The mechanical switches of Schauder are actuated by a cam on
the car to detect the location of the car. The signal from
these switches causes the car to slow down and stop at the
floor associated with the switch that actuated the cam.
We find that Gary’s mobile lift with the hinged ramp as
modified by Nordskog’s gate and ramp at the same end of the
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