Patents by Inventor Douglas Purdy

Douglas Purdy 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).

  • Patent number: 6979158
    Abstract: A cage nut assembly includes a nut and a cage wrapped therearound. The nut has a number of stand-offs or protrusions provided on a lower surface thereof such that the stand-offs are the only part of the nut which are in contact with the cage. The stand-offs reduce the amount of bearing surface interface between the cage and the nut thus reducing the possibility that the two parts will stick to each other after a coating is applied to the mating surface which the cage is welded to. The nut is engaged by a male threaded fastener which is torqued into place and the stand-offs push into the material of the cage causing the cage material to flow out of the way such that the stand-offs embed into the material of the cage without deforming the stand-offs to a flattened condition.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: December 27, 2005
    Assignee: Textron Inc.
    Inventors: James Patrick Clinch, Paul Douglas Purdy, James Ray Berkshire
  • Publication number: 20050235009
    Abstract: A versionable schema is both backward-compatible and forward-compatible. Such a schema is able to receive data expected by multiple versions of the schema; tolerates the absence of optional data, in accordance with other versions, and accept wildcard data in accordance with still further versions. Thus, a message or message may be validated by the versionable schema.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 20, 2005
    Inventors: Douglas Purdy, Natasha Jethanandani, Sowmy Srinivasan, Stefan Pharies
  • Publication number: 20040228700
    Abstract: A cage nut assembly includes a nut and a cage wrapped therearound. The nut and/or the cage are provided with a number of stand-offs. The stand-offs reduce the amount of bearing surface interface between the cage and the nut thus reducing the possibility that the two parts will stick to each other after a bath is applied to the mating surface, and thus to the cage nut assembly, as the cage is welded to the mating surface. The stand-offs can be configured such that the cage nut assembly can move through the bath in a horizontal position, an upside down position, or a sideways position, substantially without the cage and nut sticking to one another.
    Type: Application
    Filed: June 22, 2004
    Publication date: November 18, 2004
    Inventors: James Patrick Clinch, Paul Douglas Purdy
  • Publication number: 20040136804
    Abstract: A cage nut assembly is provided which includes a nut having a cylindrical portion extending from a plate portion. The nut is encaged in a cage such that the cylindrical portion extends through an aperture in the cage. The cylindrical portion of the nut is collapsible such that the nut collapses and provides a plurality of flanges upon an application of force. The flanges are folded or curved/mushroomed such that the plate portion of the nut is suspended within the cage so that the nut will not, or will minimally, stick to the cage or workpiece when coated with e-coat or ELPO. Upon torqueing a fastener into place, the flanges are bent up to allow the plate portion to interface with the cage or a workpiece to provide a solid joint.
    Type: Application
    Filed: January 13, 2003
    Publication date: July 15, 2004
    Inventors: James Patrick Clinch, Paul Douglas Purdy, William Robert Turnmire
  • Publication number: 20040109739
    Abstract: A cage nut assembly has a nut and a cage. The cage has a base having an aperture therethrough and a pair of flexible arm portions which are capable of supporting the nut off of the base. The cage nut assembly is welded to a workpiece. The workpiece is sent through an e-coat or ELPO bath. As the flexible arm portions of the cage support the nut off of the base, the possibility of the nut being stuck to the cage is reduced. A fastener is inserted through an aperture of the workpiece, through the aperture of the base and is threadedly engaged with the nut. As the fastener is torqued down, a force is applied to the nut such that the arm portions of the cage flex and allow the nut to come into contact and be secured against the base.
    Type: Application
    Filed: September 29, 2003
    Publication date: June 10, 2004
    Inventors: James Patrick Clinch, Paul Douglas Purdy
  • Publication number: 20040013492
    Abstract: A cage nut assembly is provided having a nut and a cage wrapped therearound. The nut has a number of stand-offs or protrusions provided on a lower surface thereof such that the stand-offs are the only part of the nut which are in contact with the cage. The stand-offs reduce the amount of bearing surface interface between the cage and the nut thus reducing the possibility that the two parts will stick to each other after a coating is applied to the mating surface which the cage is welded to. The nut is engaged by a male threaded fastener which is torqued into place and the stand-offs push into the material of the cage causing the cage material to flow out of the way such that the stand-offs embed into the material of the cage without deforming the stand-offs to a flattened condition.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 22, 2004
    Inventors: James Patrick Clinch, Paul Douglas Purdy, James Ray Berkshire