Patents by Inventor Steven Edwin Marshall

Steven Edwin Marshall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Resistive suction muffler for refrigerant compressors
    Patent number: 6840746
    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.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: January 11, 2005
    Assignee: Bristol Compressors, Inc.
    Inventors: Steven Edwin Marshall, David Rex Gilliam, Timothy Michael Wampler, David Turner Monk
  • Resistive suction muffler for refrigerant compressors
    Publication number: 20040005225
    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.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 8, 2004
    Inventors: Steven Edwin Marshall, David Rex Gilliam, Timothy Michael Wampler, David Turner Monk