Patents by Inventor Daniel Nachbar

Daniel Nachbar 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).

  • Internal support structure for an airship
    Patent number: 7841561
    Abstract: A system and method for internally supporting a flexible envelope such as an airship is described, comprising a truss structure and supporting struts attached to a central support member. The internal structure may be foldable so as to allow the envelope to be collapsed when not in use.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: November 30, 2010
    Inventor: Daniel Nachbar
  • Hoop stress reduction in a buoyant airship
    Patent number: 7669796
    Abstract: A system and method for equalizing internal and external pressure on an enclosed vessel moving through a gas or fluid is described, thereby reducing hoop stresses imposed on the vessel by pressure differentials. The vessel is divided into multiple chambers, and the internal pressure of a chamber may be equalized with an external pressure proximate the chamber through the use of a valve or controllable vent.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: March 2, 2010
    Inventor: Daniel Nachbar
  • Internal Support Structure for an Airship
    Publication number: 20070267537
    Abstract: A system and method for internally supporting a flexible envelope such as an airship is described, comprising a truss structure and supporting struts attached to a central support member. The internal structure may be foldable so as to allow the envelope to be collapsed when not in use.
    Type: Application
    Filed: May 18, 2006
    Publication date: November 22, 2007
    Inventors: Daniel Nachbar, Michael Kuehlmuss
  • Hoop stress reduction in a buoyant airship
    Publication number: 20060266886
    Abstract: A system and method for equalizing internal and external pressure on an enclosed vessel moving through a gas or fluid is described, thereby reducing hoop stresses imposed on the vessel by pressure differentials. The vessel is divided into multiple chambers, and the internal pressure of a chamber may be equalized with an external pressure through the use of a vent. The vent may be controllable or uncontrolled.
    Type: Application
    Filed: May 24, 2005
    Publication date: November 30, 2006
    Inventor: Daniel Nachbar
  • Lighter than air foldable airship
    Patent number: 6793180
    Abstract: A system and method for constructing an airship hull is described, comprising a plurality of flexible members disposed lengthwise about the perimeter of the airship skin. The flexible members can be held in place in sleeves on the skin of the airship. The ends of the flexible members are drawn toward one another by tensioning means, causing the members to bow outwardly from a central axis and providing a rigid structure for the skin.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: September 21, 2004
    Inventors: Daniel Nachbar, John A. Fabel
  • LIGHTER THAN AIR FOLDABLE AIRSHIP
    Publication number: 20040021037
    Abstract: A system and method for constructing an airship hull is described, comprising a plurality of flexible members disposed lengthwise about the perimeter of the airship skin. The flexible members can be held in place in sleeves on the skin of the airship. The ends of the flexible members are drawn toward one another by tensioning means, causing the members to bow outwardly from a central axis and providing a rigid structure for the skin.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 5, 2004
    Inventors: Daniel Nachbar, John A. Fabel