Patents by Inventor John Douglas Lamb

John Douglas Lamb 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).

  • Reverse rotation detection compressors with a preferential direction of rotation
    Patent number: 6210119
    Abstract: A method is disclosed for identifying when a compressor is being run in reverse due to improper wiring. In a preferred embodiment, sensors sense the condition of a refrigerant at the inlet line and a refrigerant at the outlet line. If an expected pressure differential is not seen, then the determination is made that the compressor is running in reverse. In embodiments the control system may shut down the compressor, provide an alarm, or reverse a phase of two of the three wires of a three phase power input to correct the rotation direction.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: April 3, 2001
    Assignee: Carrier Corporation
    Inventors: Alexander Lifson, Boris Karpman, John Douglas Lamb