Patents by Inventor Joseph J. Carvalho

Joseph J. Carvalho 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).

  • Motorized tool with easily replaceable switch
    Patent number: 4808862
    Abstract: An electric hand tool with a detachable switch mounted between the handle and a detachably mounted nosepiece to allow easy access to, and replacement of, the switch in case of malfunction. The nosepiece is movable in response to pressure on the workpiece. Movement of the nosepiece closes the switch for activating the motor.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: February 28, 1989
    Assignee: Joseph J. Carvalho
    Inventors: Joseph J. Carvalho, Sequndo R. Mapili, Jr.