Patents by Inventor Mike Calkins

Mike Calkins 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 system for assessing a refrigerant charge level in a vehicle air conditioning system
    Patent number: 7337619
    Abstract: A method and system for assessing a level of refrigerant in a vehicle air conditioning system. A refrigerant charge value is determined as a function of ambient air temperature, ambient air humidity, conditioned air temperature, and compressor cycling signals. The refrigerant charge value is compared to a threshold value to determine whether the level of refrigerant is acceptable.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: March 4, 2008
    Assignee: Ford Motor Company
    Inventors: Hsiao-An Hsieh, Francois Charette, Steven Lake, Harish Maruvada, Mike Calkins, Alex Przebienda, David Volker
  • METHOD AND SYSTEM FOR ASSESSING A REFRIGERANT CHARGE LEVEL IN A VEHICLE AIR CONDITIONING SYSTEM
    Publication number: 20050262855
    Abstract: A method and system for assessing a level of refrigerant in a vehicle air conditioning system. A refrigerant charge value is determined as a function of ambient air temperature, ambient air humidity, conditioned air temperature, and compressor cycling signals. The refrigerant charge value is compared to a threshold value to determine whether the level of refrigerant is acceptable.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 1, 2005
    Applicant: FORD MOTOR COMPANY
    Inventors: Hsiao-An Hsieh, Francois Charette, Steven Lake, Harish Maruvada, Mike Calkins, Alex Przebienda, David Volker