Patents by Inventor Archie B. Shaefer

Archie B. Shaefer 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).

  • Battery condition monitoring method and apparatus
    Patent number: 4052717
    Abstract: A battery condition monitoring device which senses battery terminal voltage and creates a function thereof and tests that function against predetermined criteria and determines battery condition as a result of such tests. Furthermore, the invention operates on the transient of the battery terminal voltage existant immediately upon the loading of the battery. The test is performed on the slope of the terminal voltage transient and a function of that transient during a test period is created, analyzed and evaluated against reference levels.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: October 4, 1977
    Assignee: Goodyear Aerospace Corporation
    Inventors: John B. Arnold, John M. Bowyer, Howard R. Hegbar, Archie B. Shaefer
  • Battery condition monitoring method and apparatus
    Patent number: 4025916
    Abstract: A battery condition monitoring device and technique which senses battery terminal voltage at a predetermined time period after initial loading of the battery and determines battery condition as a result of such tests. A function of the terminal voltage is created and the time period determined by the length of time required for that function to reach a predetermined level. The test is performed on the slope of the terminal voltage transient.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: May 24, 1977
    Assignee: Goodyear Aerospace Corporation
    Inventors: John B. Arnold, John M. Bowyer, Howard R. Hegbar, Archie B. Shaefer
  • Battery condition monitoring method and apparatus
    Patent number: 4024523
    Abstract: A battery condition monitoring device which senses battery terminal voltage and creates a function thereof and tests that function against predetermined criteria and determines battery condition as a result of such tests. Further, the invention operates on the transient of the battery terminal voltage existant immediately upon the loading of the battery. The test is performed on the slope of the terminal voltage transient and a function of that transient during a test period is created, analyzed and evaluated against reference levels.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: May 17, 1977
    Assignee: Goodyear Aerospace Corporation
    Inventors: John B. Arnold, John M. Bowyer, Howard R. Hegbar, Archie B. Shaefer