Patents by Inventor John D. Jeffrey

John D. Jeffrey 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).

  • Method and apparatus for working solder
    Patent number: 4699308
    Abstract: A soldering tip has a sleeve (10) with an insert (14) therein, both formed of good heat conducting material. An annular passage between the sleeve (10) and the insert (14) enables travel of solder therein by capilliary action when heat is applied to the tip and the latter contacts solder. The insert (14) is movable outwardly of the sleeve (10) to discharge solder in the annular passage from the tip.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: October 13, 1987
    Inventors: Kenneth C. Wigley, John D. Jeffrey