Patents by Inventor William J. Boonzha

William J. Boonzha 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).

  • Method and apparatus for reducing scroll compressor tip leakage
    Patent number: 5035589
    Abstract: Leakage in a scroll wrap compressor is reduced by providing a roughened scroll wrap tip surface at the gap between the tip and the cooperating base so as to increase the frictional resistance to flow of fluid through the gap and to cause turbulence within the gap to further increase the resistance to the flow of fluid from the high pressure to the low pressure side across a scroll wrap tip. Various types of surfaces are shown for increasing the frictional resistance to flow such as knurling, grooving, cast cavities, metal particles and fibers and the like.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: July 30, 1991
    Assignee: Carrier Corporation
    Inventors: Howard H. Fraser, Jr., William J. Boonzha, Shahrokh Etemad