Pumps – With muffler acting on pump fluid
Reexamination Certificate
2005-01-11
2005-01-11
Tyler, Cheryl J. (Department: 3746)
Pumps
With muffler acting on pump fluid
C417S902000, C417S415000, C417S313000, C181S233000, C181S249000, C181S248000, C181S403000, C181S252000, C062S296000, C062S092000, C062S079000
Reexamination Certificate
active
06840746
ABSTRACT:
A resistive muffler attenuates sound generated by the gas intake and suction valve during compressor operation of a refrigerant compressor. The resistive muffler is assembled inline with the suction gas flow of the compressor and is positioned within the compressor housing. The resistive muffler attenuates the sound generated by the compressor during its operation as refrigerant gas is drawn into the compressor from an evaporator and passes through the resistive muffler in transit to the suction valve and hence to the region of the compressor where the gas is physically compressed. The resistive muffler includes a muffler housing having an intake end and an exhaust end. An acoustic foam assembly is incorporated into the muffler housing. The acoustic foam assembly is selected on the basis of its ability to absorb sound over a broad range of frequencies and is the muffler containing the acoustic foam is assembled within the compressor so that the sound does not bypass the muffler and transmit significant amounts of the sound to the compressor housing. The acoustic foam remains chemically inert when exposed to the compressor fluids at elevated temperatures of operation, and retains its ability to absorb sound over a broad range of frequencies even when saturated with compressor fluids. The foam assembly should also be able to withstand very large pressure fluctuations without experiencing deterioration.
REFERENCES:
patent: 3142354 (1964-07-01), Kammerer et al.
patent: 3360193 (1967-12-01), Harris et al.
patent: 4313715 (1982-02-01), Richardson, Jr.
patent: 4401418 (1983-08-01), Fritchman
patent: 4755108 (1988-07-01), Todescat et al.
patent: 4907414 (1990-03-01), Fraser, Jr. et al.
patent: 4988269 (1991-01-01), Blass
patent: 5099566 (1992-03-01), Barrett
patent: 5101930 (1992-04-01), Fargo et al.
patent: 5151018 (1992-09-01), Clendenin et al.
patent: 5164552 (1992-11-01), Pandeya et al.
patent: 5201640 (1993-04-01), Heinzelmann et al.
patent: 5203679 (1993-04-01), Yun et al.
patent: 5205719 (1993-04-01), Childs et al.
patent: 5304044 (1994-04-01), Wada et al.
patent: 5499908 (1996-03-01), Schmitz, III
patent: 5577898 (1996-11-01), Lee
patent: 5584674 (1996-12-01), Mo
patent: 5588810 (1996-12-01), DiFlora et al.
patent: 5605447 (1997-02-01), Kim et al.
patent: 5703336 (1997-12-01), Tark et al.
patent: 5705777 (1998-01-01), Flanigan et al.
patent: 5756944 (1998-05-01), Battig et al.
patent: 5810566 (1998-09-01), Pauwels
patent: 5949034 (1999-09-01), Kim
patent: 5997258 (1999-12-01), Sawyer et al.
patent: 6129522 (2000-10-01), Seo
patent: 6257840 (2001-07-01), Ignatiev et al.
patent: 6398520 (2002-06-01), Han
patent: 6439540 (2002-08-01), Tse
patent: 6571910 (2003-06-01), Storm
patent: 20020027041 (2002-03-01), Czabala et al.
patent: 23 42 154 (1975-02-01), None
Gilliam David Rex
Marshall Steven Edwin
Monk David Turner
Wampler Timothy Michael
Bristol Compressors, Inc.
McNees Wallace & Nurick LLC
O'Brian K. Scott
Sattizahn Brian T.
Sayoc Emmanuel
LandOfFree
Resistive suction muffler for refrigerant compressors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Resistive suction muffler for refrigerant compressors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistive suction muffler for refrigerant compressors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3397908