Pumps – With muffler acting on pump fluid
Reexamination Certificate
2011-08-02
2011-08-02
Freay, Charles G (Department: 3746)
Pumps
With muffler acting on pump fluid
C181S256000, C181S403000
Reexamination Certificate
active
07988427
ABSTRACT:
A compressor has first (26) and second (28; 30) enmeshed rotors rotating about first (500) and second (502; 504) axes to pump refrigerant to a discharge plenum (42). The compressor includes a muffler system (200) comprising a sound absorbing first element (232) and a sound absorbing second element (236). The second element at least partially surrounds the first element and defines a generally annular flow path portion (230) between the first element and the second element. A wall (250) at least partially surrounds the second element. A space (259) optionally containing a sound absorbing third element (261) surrounds the wall.
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Bachman & LaPointe P.C.
Carrier Corporation
Freay Charles G
Jacobs Todd D
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