Patents Assigned to Soundwich Incorporated
  • Sound damping composition and method of using the composition
    Patent number: 4952610
    Abstract: The invention concerns constrained layer sound damping. A composition and a laminated structure are provided for the reduction of noise coming from housings such as oil pans for automobiles. The composition comprises a rubbery polyurethane, an olefin polymer, and a filler. The laminated structure comprises the housing, the composition, and a sheet metal liner. The composition contains a blowing agent which is activated to provide a single unitary structure which dampens noise. The polyurethane and olefin polymer are thoroughly intermixed with each other, but maintain their separate identities in the blend.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: August 28, 1990
    Assignee: Soundwich Incorporated
    Inventors: Dan T. Moore, III, Edward A. Collins, Maurice E. Wheeler
  • Sound dampened automotive enclosure such as an oil pan
    Patent number: 4851271
    Abstract: The invention concerns constrained layer sound damping. A composition and a laminated structure are provided for the reduction of noise coming from housings such as oil pans for automobiles. The composition comprises a rubbery polyurethane, an olefin polymer, and a filler. The laminated structure comprises the housing, the composition, and a sheet metal liner. The composition contains a blowing agent which is activated to provide a single unitary structure which dampens noise. The polyurethane and olefin polymer are thoroughly intermixed with each other, but maintain their separate identities in the blend.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: July 25, 1989
    Assignee: Soundwich Incorporated
    Inventors: Dan T. Moore, III, Edward A. Collins, Maurice E. Wheeler