Patents by Inventor Earl D. Sunnarborg

Earl D. Sunnarborg 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).

  • Patent number: 4176315
    Abstract: A miniature electrical tester provides a wide range of voltage and electrical continuity testing capabilities. A molded plastic front case has a partition which separates it into a circuit compartment and a test lead compartment. A circuit board is located in the circuit compartment, and test leads which are connected to the circuit board are stored in the test lead compartment when not in use. A molded plastic back cover has a circuit cover section which covers the circuit compartment, a test lead cover section which covers the test lead compartment, and a flexible hinge section located between the circuit and test lead cover sections. The positioning of batteries and the innerconnection of the batteries within the circuit compartment, together with the location of the remaining components of the circuit board permit the circuit board to be held securely in place by a single screw and a compression pad.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: November 27, 1979
    Inventor: Earl D. Sunnarborg