Patents by Inventor Sudarshan K. Narasipura

Sudarshan K. Narasipura 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).

  • Check valve retainer for a scroll compressor
    Patent number: 6749412
    Abstract: A check valve retainer for a scroll compressor includes a retaining lip that fits into a recess formed in a scroll. The retaining lip may be manufactured as an integral part of the check valve retainer for press fitting or may be formed by an expansion fit locking member having a protrusion that forces a portion of check valve retainer wall into the recess. The retaining lip ensures that the check valve retainer stays attached to the scroll without risking scroll deformation.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: June 15, 2004
    Assignee: Scroll Technologies
    Inventors: Sudarshan K. Narasipura, Robert C. Witham
  • Stress relieved lower shell for sealed compressors
    Patent number: 6695201
    Abstract: A lower shell for a sealed compressor includes a shape with a plurality of intricate bends. In particular, u-shaped sections are stamped into a plainer sheet of material to form the lower shell. This stamping process can cause brittleness in the lower shell. Thus, after the stamping process, the lower shell is subjected to a heat-treating process to reduce the brittleness. After the heat-treating process a center shell is welded to the lower shell.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: February 24, 2004
    Assignee: Scroll Technologies
    Inventors: Sudarshan K. Narasipura, Gregory W. Hahn
  • Check valve retainer for a scroll compressor
    Publication number: 20040022658
    Abstract: A check valve retainer for a scroll compressor includes a retaining lip that fits into a recess formed in a scroll. The retaining lip may be manufactured as an integral part of the check valve retainer for press fitting or may be formed by an expansion fit locking member having a protrusion that forces a portion of check valve retainer wall into the recess. The retaining lip ensures that the check valve retainer stays attached to the scroll without risking scroll deformation.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 5, 2004
    Inventors: Sudarshan K. Narasipura, Robert C. Witham
  • Sealed compressor housing with noise reduction features
    Patent number: 6648616
    Abstract: A sealed compressor assembly includes a compressor pump driven by a motor mounted within a sealed housing. The sealed housing comprises a center shell extending between first and second ends and a lower shell attached to the center shell. The lower shell is generally square shaped with mounting feet extending diagonally from each corner. The lower shell includes a predetermined amount of material removed to shift the resonance frequency of the sealed housing outside the operating frequency range of the motor and compressor.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: November 18, 2003
    Assignee: Scroll Technologies
    Inventors: Tapesh Patel, Sudarshan K. Narasipura, Wei Zhou
  • Sealed compressor housing with noise reduction features
    Publication number: 20030129072
    Abstract: A sealed compressor assembly includes a compressor pump driven by a motor mounted within a sealed housing. The sealed housing comprises a center shell extending between first and second ends and a lower shell attached to the center shell. The lower shell is generally square shaped with mounting feet extending diagonally from each corner. The lower shell includes a predetermined amount of material removed to shift the resonance frequency of the sealed housing outside the operating frequency range of the motor and compressor.
    Type: Application
    Filed: January 4, 2002
    Publication date: July 10, 2003
    Inventors: Tapesh Patel, Sudarshan K. Narasipura, Wei Zhou
  • Stress relieved lower shell for sealed compressors
    Publication number: 20030039562
    Abstract: A lower shell for a sealed compressor includes a shape with a plurality of intricate bends. In particular, u-shaped sections are stamped into a plainer sheet of material to form the lower shell. This stamping process can cause brittleness in the lower shell. Thus, after the stamping process, the lower shell is subjected to a heat-treating process to reduce the brittleness. After the heat-treating process a center shell is welded to the lower shell.
    Type: Application
    Filed: August 23, 2001
    Publication date: February 27, 2003
    Inventors: Sudarshan K. Narasipura, Gregory W. Hahn
  • WELD STRENGTHENING COMPONENT FOR SEALED COMPRESSORS
    Publication number: 20020136651
    Abstract: A sealed compressor includes a lower end cap with a u-shaped hump extending around its periphery. A weld reinforcement which is preferably a ring is welded between inner and outer legs of the u-shaped hump. The weld reinforcement ring bears a good deal of stress from internal pressures, and results in a more long-lasting housing.
    Type: Application
    Filed: March 23, 2001
    Publication date: September 26, 2002
    Applicant: Scroll Technologies
    Inventors: Zili Sun, Gregory W. Hahn, Sudarshan K. Narasipura
  • Weld strengthening component for sealed compressors
    Patent number: 6454550
    Abstract: A sealed compressor includes a lower end cap with a u-shaped hump extending around its periphery. A weld reinforcement which is preferably a ring is welded between inner and outer legs of the u-shaped hump. The weld reinforcement ring bears a good deal of stress from internal pressures, and results in a more long-lasting housing.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: September 24, 2002
    Assignee: Scroll Technologies
    Inventors: Zili Sun, Gregory W. Hahn, Sudarshan K. Narasipura