Patents by Inventor Martin Larry

Martin Larry 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).

  • Filter-fan product including a circuit for monitoring the filter thereof
    Publication number: 20010045159
    Abstract: A method and circuit for monitoring the useful life of a filter for a filter-fan product. The method includes the steps of detecting use of a fan of the filter-fan product with a microprocessor, counting from a predetermined initial counter value a duration of usage of the fan with a counter of the microprocessor to determine a present counter value, sending a signal representing the present counter value from the microprocessor to a display and displaying the remaining useful life of the filter based on the signal received from the micro processor. Use of the fan is preferably detected by detecting a position of a fan speed switch such that the microprocessor detects the speed of the fan and adjusts the rate of counting by the counter based on the detected speed of the fan.
    Type: Application
    Filed: January 12, 2001
    Publication date: November 29, 2001
    Inventors: William A. Johnson, Martin Larry