Patents by Inventor David Brumfield

David Brumfield 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: 6280442
    Abstract: A bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: August 28, 2001
    Assignee: SDGI Holdings, Inc.
    Inventors: B. Thomas Barker, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan
  • Patent number: 6023797
    Abstract: A comfort system is provided involving a towel, blanket or cloth that folds into a pillow configuration, and in a fire retardant version is useful as vehicle comfort system. The comfort system involves a length of cloth or fabric that folds into a pillow configuration. An air bladder contained within the pillow supplements the pillow to provide increased comfort. The comfort system provides reduced weight and convenient storage volume consumption for aircraft while providing the flexibility of selectively functioning as a pillow or towel or cover according to the particular needs of the user.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: February 15, 2000
    Inventor: John David Brumfield
  • Patent number: 5850643
    Abstract: A comfort system is provided involving a blanket that folds into a pillow configuration, and in a fire retardant version is useful as an aircraft comfort system. The aircraft comfort systems involves a fire retardant blanket that folds into a pillow configuration. The comfort system provides reduced weight and reduced storage volume consumption for aircraft while providing the flexibility of selectively functioning as a pillow or blanket according to the particular needs of the flying population on any given aircraft. The comfort system has an inflatable pillow element received within an inner pocket which is received within an outer pocket. The pillow element in hidden when the comfort system is in either a folded or unfolded position.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: December 22, 1998
    Inventor: John David Brumfield
  • Patent number: 5062844
    Abstract: A method and apparatus for the fixation of bone fractures, limb lengthening, and the correction of deformities uses an improved composite plastic carbon fiber ring that is formed in a mold, or machined with a stepped end portion that allows half rings to be assembled in a common plane. The method can use a mold wherein multiple rings can be formed by stacking the rings with a Teflon layer therebetween and wherein circumferential braid reinforcement of carbon fiber adds strength at the circumferential inner and outer curved surfaces of the rings and half rings.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: November 5, 1991
    Assignee: Smith & Nephew Richards Inc.
    Inventors: Russell D. Jamison, David Brumfield, Richard Treharne, Paul Wisnewski, Robert Wigginton, Michael Sherman