Patents by Inventor Tristan Crawford

Tristan Crawford 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).

  • Aircraft wing box and manufacture thereof
    Patent number: 8172179
    Abstract: An aircraft wing box comprises a pair of half ribs (18, 20) joined to form a rib extending from an upper wing skin (12) to a lower wing skin (10). Each half rib (18) comprises a base (19) and a plurality of projections (4) that extend away from the base (19), the projections (4) defining a series of troughs (2a) and peaks (4a). Respective projections of one half rib (18) overlap with respective projections of the other half rib (20) thereby defining overlapping portions (3), the half ribs (18, 20) being joined in the regions of the overlapping portions (3). There may be projections (4) shaped such that the overlapping portion (3b) defined by the two projections is separated from the neutral axis N of the rib (18, 20).
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: May 8, 2012
    Assignee: Airbus Operations Limited
    Inventor: Tristan Crawford
  • AIRCRAFT WING BOX AND MANUFACTURE THEREOF
    Publication number: 20090206203
    Abstract: An aircraft wing box comprises a pair of half ribs (18, 20) joined to form a rib extending from an upper wing skin (12) to a lower wing skin (10). Each half rib (18) comprises a base (19) and a plurality of projections (4) that extend away from the base (19), the projections (4) defining a series of troughs (2a) and peaks (4a). Respective projections of one half rib (18) overlap with respective projections of the other half rib (20) thereby defining overlapping portions (3), the half ribs (18, 20) being joined in the regions of the overlapping portions (3). There may be projections (4) shaped such that the overlapping portion (3b) defined by the two projections is separated from the neutral axis N of the rib (18, 20).
    Type: Application
    Filed: July 19, 2007
    Publication date: August 20, 2009
    Inventor: Tristan Crawford