Appeal No. 97-2608
Application No. 08/568,146
The appellants’ invention is directed to a closed
refrigeration system in which refrigerant in the expanded
state is used to cool the compressor motor. The subject
matter before us on appeal is illustrated by reference to
claim 1, which reads as follows:
1. A closed refrigeration system serially including a
motor-compressor, a discharge line, a condenser, a heat
exchanger economizer, an expansion device, an evaporator and a
suction line, and temperature control means comprising:
means for sensing a parameter representative of operating
temperature of said motor;
means for supplying an expanded flow through said
economizer to said motor of said motor-compressor for cooling
said motor;
means for controlling said means for supplying an
expanded refrigerant flow responsive to said means for
sensing.
THE REFERENCES
The references relied upon by the examiner to support the
final rejection are:
Shaw 4,947,655 Aug.
14, 1990
Heinrichs et al. (Heinrichs) 5,475,985 Dec.
19, 1995
(filed Dec. 14, 1993)
2
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