Patents by Inventor John Duncan Unsworth

John Duncan Unsworth 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: 6860691
    Abstract: A faster system includes a screw or bolt having two interleaved helical threads, which bracket a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the screw and helicoil are inserted even when the substrate recedes a significant distance from the screw and helicoil combination. The fastener system includes means for latching the tilt of the coil so as to minimize the constraining forces and optimize the motion of the helicoil, that results in the screw or bolt being pushed into the substrate.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: March 1, 2005
    Inventors: John Duncan Unsworth, Thomas Cole Waram
  • Publication number: 20040238477
    Abstract: The invention is a device and a method for remotely peeling off a peelable seal, using only one or two pieces of flexible material, allowing the container to be placed in the pouring position, and the delivery orifice to be inserted into a receiving port, all the while sealed; then once in the receiving port, to be unsealed, so as not to spill any fluid outside the receiving port.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 2, 2004
    Inventor: John Duncan Unsworth
  • Patent number: 6635079
    Abstract: A stent radially expandable from a radially contracted introduction state into a radially expanded position state, in which the final shape of the stent can be controlled by varying the amount and places energy is delivered onto the interior surfaces of the tubes from which the stent is fabricated, and means to seal the opening into the aneurysm, thereby causing the blood therein to clot and preventing the aneurysm from growing or rupturing.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: October 21, 2003
    Inventors: John Duncan Unsworth, Thomas Cole Waram
  • Patent number: 6615080
    Abstract: A single channel neuromuscular electrical stimulation (NMES) device for the prevention of deep vein thrombosis (DVT), pulmonary embolism (PE), lower extremity edema, and other associated conditions by electrical stimulation of the muscles of the foot muscles. An electrical signal generator produces a square wave pattern of variable frequency, duration, intensity, ramp time, and stimulation on-off cycle. Surface electrodes are positioned over the foot muscles and are attached to the stimulator by various means. The stimulator is programmed in a manner to stimulate the foot muscles to reduce pooling of the blood in the soleal veins of the calf This is accomplished by only stimulating the soles of the feet.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: September 2, 2003
    Inventors: John Duncan Unsworth, Jack Hirsh, Robert Edward Kaplan, James Joseph Czyrny
  • Publication number: 20030123952
    Abstract: A fastener system includes a screw or bolt having two interleaved helical threads, which bracket a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the screw and helicoil are inserted even when the substrate recedes a significant distance from the screw and helicoil combination. The fastener system includes means for latching the tilt of the coil so as to minimize the constraining forces and optimize the motion of the helicoil, that results in the screw or bolt being pushed into the substrate.
    Type: Application
    Filed: November 29, 2002
    Publication date: July 3, 2003
    Inventors: John Duncan Unsworth, Thomas Cole Waram
  • Publication number: 20020198584
    Abstract: A stent radially expandable from a radially contracted introduction state into a radially expanded position state, in which the final shape of the stent can be controlled by varying the amount and places energy is delivered onto the interior surfaces of the tubes from which the stent is fabricated, and means to seal the opening into the aneurysm, thereby causing the blood therein to clot and preventing the aneurysm from growing or rupturing.
    Type: Application
    Filed: September 27, 2001
    Publication date: December 26, 2002
    Inventors: John Duncan Unsworth, Thomas Cole Waram
  • Publication number: 20020134542
    Abstract: The invention describes a heat exchanger that continuously and passively regulates the transfer of heat across each part of the heat exchanger's partitions. Such partitions composed of typically two tubes, one inside the other's bore, that at various points, contact each other or separate from each other, thereby increasing or decreasing heat transfer across their walls at those points. Such separations and contacts being spontaneously effected by changes in the shape of at least one of the tubes which is driven by elements connected to that tube and which change their shape in response to temperature changes, such as shape memory alloys (SMA's) or bi-metal strips.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 26, 2002
    Inventor: John Duncan Unsworth