Appeal No. 2005-0682 Page 5
Application No. 10/064,682
signal by a controller gain, which is incrementally adjustable between a plurality of
individual gain settings. The controller further includes an operator actuated means for
selecting one of the plurality of gain settings and a display means for indicating to the
operator the selected gain setting.
Figure 1 of McGrath is a schematic diagram illustrating an electric brake system
for a towed vehicle (not shown) which utilizes an electronic brake controller 11. The
brake controller 11 is typically located in a towing vehicle (not shown), usually being
mounted beneath the towing vehicle dashboard. When actuated, the controller 11
functions to supply an electric current through line 12 to energize electric brakes 13 and
14 which brake the wheels of the towed vehicle (not shown).
The towing vehicle typically includes a conventional hydraulic brake system 20
which is actuated when a brake pedal 21 is depressed by a vehicle driver. The brake
pedal 21 is coupled to a brake light switch 22. When the brake pedal 21 is depressed,
the switch 22 is closed and power from a vehicle power supply 23, shown as a storage
battery, is supplied to one or more towing vehicle brake lights 24 and one or more
towed vehicle brake lights 25. The vehicle power supply 23 is also connected by a first
line 26 through a circuit breaker 27 to the controller 11. A second line 28 connects the
brake light side of the brake light switch 22 to the controller 11. Thus, power also is
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007