Patents by Inventor Andrea B. Dacosta

Andrea B. Dacosta 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).

  • Rotary compressor with discharge chamber pressure relief groove
    Patent number: 5823755
    Abstract: The annular piston of a rolling piston compressor coacts with a groove in valving action such that the groove serves as a supplemental discharge flow area but gas therein is prevented from constituting part of the suction flow. The groove may be in the motor end bearing and/or pump end bearing and permits flow from the compression chamber to the interior of the piston which is in fluid communication with the interior of the shell while the compression chamber is undergoing discharge.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: October 20, 1998
    Assignee: Carrier Corporation
    Inventors: Francis P. Wilson, Andrea B. Dacosta, James W. Bush