Patents by Inventor Douglas F. DeFusco

Douglas F. DeFusco 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).

  • Automatic soldering machine
    Patent number: 4298154
    Abstract: An automatic apparatus for soldering jump rings conventionally used in chain jewelry. The apparatus includes a fixture in which at least one and preferably a plurality of laterally oriented grooves are disposed in the upper face of a heat resistant fixture which in turn is adapted to move longitudinally with respect to a frame which supports the fixture. In addition to the laterally oriented grooves, at least one and preferably a pair of longitudinally oriented grooves are disposed in the face of the fixture in intersecting relation to said lateral grooves.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: November 3, 1981
    Assignee: B. B. Greenberg Company
    Inventor: Douglas F. DeFusco