Patents by Inventor Johan B. Chandra

Johan B. Chandra 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).

  • Pressure control for a reciprocating compressor
    Patent number: 6227815
    Abstract: A reciprocating compressor apparatus includes a piston and a drive mechanism configured to reciprocate the piston. A housing contains a lubricant for the drive mechanism in a lubricant chamber at one side of the piston. The apparatus further includes a conduit pneumatically communicating the lubricant chamber with an opposite side of the piston, a check valve that prevents flow from the intake plenum to the lubricant chamber, and an inlet valve that acts as a throttling device to reduce the pressure in the inlet plenum.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: May 8, 2001
    Assignee: Campbell Hausfeld/Scott Fetzer Company
    Inventors: Johan B. Chandra, Joseph A. Abt