Patents by Inventor Paul D. Levesque

Paul D. Levesque 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).

  • Key board switch assembly having canti-levered leaf spring contact assembly on common conductive frame
    Patent number: 4099037
    Abstract: A push button panel having twelve push buttons arranged in three columns of four push buttons per column. A push button panel of the type described wherein a common signal is connected to the unique combination of two out of seven circuit paths when a given push button is depressed. The panel has a minimum number of individual parts and employs lead frame techniques to facilitate fabrication of the parts in a rapid manner according to well understood procedures. A push button panel arranged to optimize the spring characteristics of the members so as to minimize the likelihood of false signals without requiring excessive force to operate the push buttons.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: July 4, 1978
    Assignee: National Semiconductor Corporation
    Inventors: Earnest D. Hartzler, Paul D. Levesque