Patents by Inventor Cornelis Van Tilborgh

Cornelis Van Tilborgh 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 device for producing a double-curved sheet-like object by means of stretch-forming
    Patent number: 6675624
    Abstract: A device for forming a double-curved object comprises a frame, two elongate clamping heads which are arranged parallel to one another on the frame, a support with an exchangeable shaping die, on either side of which support there are clamping heads, and drive means for moving the clamping heads to and fro transversely with respect to their longitudinal direction, along the shaping die in the direction of a working stroke, during which the sheet is stretched and formed, and a return stroke. At least one of the clamping heads is provided with a double-curved shaping piece.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: January 13, 2004
    Assignee: Fokker Aerostructures B.V.
    Inventors: Cornelis Arie Naaktgeboren, Cornelis Van Tilborgh, Jacobus Jozef Vincentius Koning
  • Method and device for producing a double-curved sheet-like object by means of stretch-forming
    Publication number: 20020062675
    Abstract: A device for forming a double-curved object comprises a frame, two elongate clamping heads which are arranged parallel to one another on the frame, a support with an exchangeable shaping die, on either side of which support there are clamping heads, and drive means for moving the clamping heads to and fro transversely with respect to their longitudinal direction, along the shaping die in the direction of a working stroke, during which the sheet is stretched and formed, and a return stroke. At least one of the clamping heads is provided with a double-curved shaping piece.
    Type: Application
    Filed: July 26, 2001
    Publication date: May 30, 2002
    Inventors: Cornelis Arie Naaktgeboren, Cornelis Van Tilborgh, Jacobus Jozef Vincentius Koning
  • Bent structure comprising outer metal sheets in a soft W condition bonded by an adhesive layer
    Patent number: 5185198
    Abstract: To improve forming properties of laminated structures comprising two sheets of a non-ferrous metal alloy connected by an adhesive, which hardens at heating and between which an adhesive layer is bonded to the metal sheets, a new sequence of heat treatments is proposed. The alloy of the sheets is in soft condition before the sheets are bonded to each other. The bonding temperature and time are selected such that it remains substantially in soft condition and only after forming further heating is applied to obtain hardening of the alloy sheets.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: February 9, 1993
    Assignee: Fokker Aircraft B.V.
    Inventors: Paul Lefeber, Rene Botterman, Cornelis Van Tilborgh, Loek Van Veggel