Patents by Inventor John H. Munro

John H. Munro 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).

  • Exhaust system for internal combustion engines
    Patent number: 4541240
    Abstract: The present invention provides an exhaust system comprising an elongated hollow casing having an upstream muffler chamber containing an insulated removable cartridge for sound absorbing and sound collecting, an intermediate chamber containing a removable spark and moisture arrester and a downstream chamber having a removable and replaceable cartridge containing exhaust gas purifying material. In one embodiment the cartridge provides dual chambers, one for absorbing and absorbing exhaust gas pollutants and the other for catalytic conversion of the same or different exhaust gases. The purifying cartridge is constructed of a foraminous material such as heat and corrosion resistant wire mesh or screen. Similarly, the muffler cartridge is an elongated hollow shell formed of a foraminous heat and corrosion resistant material such as wire mesh or screen. The annular space around the muffler cartridge is preferably filled with a heat-resistant, sound-absorbing, gas previous material.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: September 17, 1985
    Inventor: John H. Munro
  • Exhaust system for internal combustion engines
    Patent number: 4393652
    Abstract: The present invention provides an exhaust system comprising an elongated hollow casing having an upstream muffler chamber containing an insulated removable cartridge for sound absorbing and sound collecting, an intermediate chamber containing a removable spark and moisture arrester and a downstream chamber having a removable and replaceable cartridge containing exhaust gas purifying material. In one embodiment the cartridge provides dual chambers, one for absorbing and absorbing exhaust gas pollutants and the other for catalytic conversion of the same or different exhaust gases. The purifying cartridge is constructed of a foraminous material such as heat and corrosion resistant wire mesh or screen. Similarly, the muffler cartridge is an elongated hollow shell formed of a foraminous heat and corrosion resistant material such as wire mesh or screen. The annular space around the muffler cartridge is preferably filled with a heat-resistant, sound-absorbing, gas previous material.
    Type: Grant
    Filed: July 23, 1980
    Date of Patent: July 19, 1983
    Inventor: John H. Munro