Patents by Inventor Robert N. Berry

Robert N. Berry 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 means for straight line manufacture of sheet metal duct elements
    Patent number: 3986470
    Abstract: The method of fabricating the sheet metal duct units of the present invention comprises cutting a plurality of spaced lines of notches in an elongated strip of sheet metal, each of the lines being transverse to the longitudinal axis of the strip. The strip is sheared at predetermined points along the length thereof so that the cutting and the shearing operation combine to form sheet metal segments each having at least one cleat tab on at least one end thereof. Next the sheet metal segments are bent along at least one axis extending longitudinally with respect to the longitudinal axis of the sheet metal so as to form an upstanding leg, the cleat tab being on one end of the upstanding leg. The cleat tab is then bent back against the remainder of the upstanding leg so as to form a cleat.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 19, 1976
    Inventors: Robert N. Berry, Dale D. Borlaug
  • Cleat forming method and machine
    Patent number: 3983735
    Abstract: The method of fabricating the sheet metal duct units of the present invention comprises cutting a plurality of spaced lines of notches in an elongated strip of sheet metal, each of the lines being transverse to the longitudinal axis of the strip. The strip is sheared at predetermined points along the length thereof so that the cutting and the shearing operation combine to form sheet metal segments each having at least one cleat tab on at least one end thereof. Next the sheet metal segments are bent along at least one axis extending longitudinally with respect to the longitudinal axis of the sheet metal so as to form an upstanding leg, the cleat tab being on one end of the upstanding leg. The cleat tab is then bent back against the remainder of the upstanding leg so as to form a cleat.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: October 5, 1976
    Inventor: Robert N. Berry
  • Notching machine
    Patent number: 3982457
    Abstract: The method of fabricating the sheet metal duct units of the present invention comprises cutting a plurality of spaced lines of notches in an elongated strip of sheet metal, each of the lines being transverse to the longitudinal axis of the strip. The strip is sheared at predetermined points along the length thereof so that the cutting and the shearing operation combine to form sheet metal segments each having at least one cleat tab on at least one end thereof. Next the sheet metal segments are bent along at least one axis extending longitudinally with respect to the longitudinal axis of the sheet metal so as to form an upstanding leg, the cleat tab being on one end of the upstanding leg. The cleat tab is then bent back against the remainder of the upstanding leg so as to form a cleat.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: September 28, 1976
    Inventor: Robert N. Berry