Appeal No. 2006-1228
Application No. 09/802,982
evaporator (6) where it takes up heat from water entering the
engine (figure 1).
Enomoto discloses a motor vehicle passenger compartment
heating and cooling system comprising 1) a main conduit (16)
through which refrigerant flows from a compressor (10) through,
sequentially, a pressure sensor (104), a first electric
valve (181), a condenser (11), a receiver (12), a check
valve (24), a first expansion valve (13), a heat exchanger (14),
and an evaporator/accumulator (15), and then returns to the
compressor, and 2) a bypass conduit (20) through which
refrigerant from the compressor flows, sequentially, through the
pressure sensor (104), a second electric valve (182), a second
expansion valve (22), the heat exchanger (14), and the
evaporator/accumulator (15), and then returns to the compressor
(figure 1).
The appellant argues that the references provide no
motivation to use Enomoto’s air conditioning circuit in Noda’s
system because Noda has no air conditioner and Enomoto already
has both heating and cooling circuits (brief, page 12). That
motivation would have been to provide air conditioning along with
the benefits of Noda’s heating system.
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