Patents by Inventor Ronald D. Claridge

Ronald D. Claridge 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).

  • Metering apparatus
    Patent number: 5045776
    Abstract: Metering apparatus with a bank of number wheel indicators has wiper and position contacts to provide an electrical indication of the meter reading. The contacts are scanned in a measurement mode and, in an alternating test mode, test signals are imposed upon the position contacts and the output again scanned. In this way, a contact validation output is generated from which faults such as contact short circuits can be detected by the remote meter reading apparatus.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: September 3, 1991
    Assignee: ABB Kent plc
    Inventor: Ronald D. Claridge