Patents by Inventor Duilio Macchi

Duilio Macchi 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).

  • Process for the production of multi-thickness and/or multi-material blanks
    Patent number: 6642474
    Abstract: A process for the production of multi-thickness and/or multi-material blanks, comprising the steps of: setting and withholding a first piece (P1) of metal sheet on a first workpiece-supporting structure (38); setting and withholding a second piece (P2) of metal sheet on a second workpiece-supporting structure (40) which is mobile with respect to the first workpiece-supporting structure (38) under the control of a numerical-control unit (14); carrying out laser cutting of at least one edge of the first piece (P1) and of the second piece (P2) and defining reference lines (58, 60) of the first piece and second piece, respectively, the positions of which are known to the numerical-control unit (14); bringing the first piece (P1) and the second piece (P2) up to one another until they reach a position where the aforesaid reference lines (58, 60) overlap one another; and carrying out a laser weld between the first piece (P1) and the second piece (P2) along the aforesaid coinciding reference lines (58, 60).
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 4, 2003
    Assignee: Prima Industries, SpA
    Inventors: Alberto Delle Piane, Duilio Macchi
  • Process for the production of multi-thickness and/or multi-material blanks
    Publication number: 20020000429
    Abstract: A process for the production of multi-thickness and/or multi-material blanks, comprising the steps of: setting and withholding a first piece (P1) of metal sheet on a first workpiece-supporting structure (38); setting and withholding a second piece (P2) of metal sheet on a second workpiece-supporting structure (40) which is mobile with respect to the first workpiece-supporting structure (38) under the control of a numerical-control unit (14); carrying out laser cutting of at least one edge of the first piece (P1) and of the second piece (P2) and defining reference lines (58, 60) of the first piece and second piece, respectively, the positions of which are known to the numerical-control unit (14); bringing the first piece (P1) and the second piece (P2) up to one another until they reach a position where the aforesaid reference lines (58, 60) overlap one another; and carrying out a laser weld between the first piece (P1) and the second piece (P2) along the aforesaid coinciding reference lines (58, 60).
    Type: Application
    Filed: June 28, 2001
    Publication date: January 3, 2002
    Inventors: Alberto Delle Piane, Duilio Macchi