Appeal No. 1999-0316
Application 08/329,124
Hajicek does not teach and would not have suggested a
method meeting any of the defrosting limitations recited in
claims 12 and 13. The examiner’s reliance on Morissette,
taken alone or in combination with Noda, to overcome this
deficiency is not well founded.
Morissette discloses a building ventilation system which
utilizes a stationary heat recovery core 1, 11 to transfer
heat from exhaust air to fresh air. In a defrost mode, the
system prevents the intake of fresh air and circulates exhaust
air through both the exhaust air path and the normally fresh
air path and then back into the building.
Noda discloses an air conditioner having an aeration
(exhaust) passage 16, a (fresh) air supply passage 18, a total
enthalpy heat exchanger 28 for transferring heat from the
aeration air flow to the fresh air flow, an auxiliary aeration
heat exchanger 32 in the aeration passage 16 downstream of
heat exchanger 28, and an auxiliary air supply heat exchanger
48 in the air supply passage downstream of the heat exchanger
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