Appeal 2007-1444
Application 10/732,497
THE INVENTION
Appellants claim a system for diagnosing a loss of refrigerant charge that
provides information regarding an amount of refrigerant charge within a refrigerant
system based upon equalized system pressure at equilibrium conditions
(Specification 2:[0007]). Claims 20 and 21, reproduced below, are the only claims
on appeal.
20. A method of monitoring a refrigerant charge loss in a
refrigerant system, comprising:
determining an equilibrium pressure while the
system is inactive:
determining an ambient temperature;
determining if a difference between an expected
pressure corresponding to the determined ambient
temperature and the determined equilibrium pressure
exceeds a selected threshold; and
determining an amount of refrigerant charge loss
from the system based upon the difference between the
expected pressure and the determined equilibrium
pressure.
21. The method of claim 20, comprising determining a
percentage of refrigerant charge loss.
THE REJECTIONS
The Examiner relies upon the following as evidence of lack of novelty:
Scoccia US 5,481,884 Jan. 9, 1996
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