Patents by Inventor David Hamilton

David Hamilton 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: 7322625
    Abstract: The Detachable Clearance Wands provide a driver of a large vehicle having slideout compartments with a clear dimension for the extension length of the slideout. The wands are attachable to the vehicle's side prior to parking it to provide the extension length without risk of damage to the slideout. The wands are length-adjustable so that they can be configured for any length slideout.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: January 29, 2008
    Assignee: PCZ Enterprises, LLC
    Inventor: David Hamilton
  • Patent number: 7297396
    Abstract: A bond is created during gypsum board cure between a gypsum matrix and a tacky coating applied onto a glass fiber. The tacky coating is comprised of a polymer composed of methacrylic acid and dimethyldiallyammonium chloride. The polymer is dissolved in an acidic aqueous solution and is roller coated onto the glass fibers. The chopped glass fibers may also be placed in such an acidic solution, which is made alkaline by the addition of alkali, thereby precipitating the polymer out of solution as a tacky composition that produces a tacky coating on the glass fibers. The glass fibers with the tacky bond coating are incorporated in an alkaline gypsum slurry to form a gypsum board having a first and second facer sheet. The tacky coating on the glass fibers bonded to the gypsum matrix result in compliant load transfer between the gypsum matrix and the glass fibers, yielding improved flexure strength and nail pullout resistance.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: November 20, 2007
    Assignee: Johns Manville
    Inventors: Lance Wang, Thomas G. Grassl, Robert David Hamilton
  • Patent number: 7287793
    Abstract: Detachable Clearance Wands are disclosed. The wands provide a driver of a large vehicle having slideout compartments with a clear dimension for the extension length of the slideout. The wands are attachable to the vehicle's side prior to parking it to provide the extension length without risk of damage to the slideout. The wands are length-adjustable so that they can be configured for any length slideout. In an alternate embodiment, the wands are comprised of several pieces of wand material interconnected to one another, such that the wand can be collapsed for consolidation and storage when not in use.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: October 30, 2007
    Assignee: DC2 Enterprises, LLC
    Inventor: David Hamilton
  • Publication number: 20070225145
    Abstract: The invention is an improved method for manufacturing fiberglass. In the method of the invention, traditional raw materials are at least partially replaced by pre-reacted materials. Use of these pre-reacted material results is less energy based to manufacture glasses and better melting of the raw material.
    Type: Application
    Filed: June 13, 2006
    Publication date: September 27, 2007
    Inventors: Jon Frederick Bauer, Robert David Hamilton, Susan McMillin Gee
  • Publication number: 20070214412
    Abstract: A method for displaying storage network information in a user interface. The method includes identifying a topology map for a storage network and gathering operating information, which is processed to determine a performance parameter, such as utilization. A performance monitoring display is generated including a topology map and a graphical representation of the performance parameter, which is positioned in the display relative to the components for which the parameter applies. The graphical representation can be a pair of parallel dashed lines between communicating components. The dashes in the lines are moved using a speed coding scheme representative of the performance parameter, e.g., with faster speeds used to show higher ranges of utilization, and the direction of movement matches data flow. The dashed lines are colored using a color coding scheme and the line segment lengths vary in association with the performance value.
    Type: Application
    Filed: May 15, 2007
    Publication date: September 13, 2007
    Applicant: SANAVIGATOR, INC.
    Inventors: Louis Arquie, David Hamilton, Mark Lubeck
  • Publication number: 20070205249
    Abstract: A wire bonder (900) with a rigid pedestal (902) having resilient inserts (920). A package (904) placed on the pedestal (902) contains an electrical device (906). The bond pads on the electrical device (906) are electrically connected to bond pads on the package (904) by a series of bond wires (908) through use of a well know bonding process. A vacuum source holds the package (904) against the pedestal (902) deforming the resilient strips (920) located in the rigid member (902) of the pedestal and ensuring good contact between the ground pads of the package (904) and conductive resilient members (920). The resilient members (920) are conductive and electrically connect the package grounds to a system ground (922).
    Type: Application
    Filed: May 8, 2007
    Publication date: September 6, 2007
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jeffrey Marsh, R. White, David Hamilton
  • Publication number: 20070195331
    Abstract: A coating thickness gauge for measuring the thickness of a coating on a surface of a can is described. The gauge comprises a probe head and a probe head locating mechanism. By employing the probe head locating mechanism the probe head can be easily orientated relative to the surface of a can. The ability to select and fix the measurement orientation of the probe head provides the coating thickness gauge with enhanced flexibility such that it can be employed to take measurements from all surface sections of the can, both interior and exterior. This ability is not dependent on the experience, knowledge or skill of a particular operator. As a result the gauge provides for a fast means of measuring the thickness of a coating which can be used within an in line feedback system, on a commercial scale.
    Type: Application
    Filed: October 12, 2006
    Publication date: August 23, 2007
    Applicant: Scalar Technologies Limited
    Inventors: Ian Bain, Ketil Karstad, Stephen Wilson, David Hamilton
  • Publication number: 20070089687
    Abstract: A Screen Leash is disclosed. The screen leash is made from an elongate strap that provides an extension to a screen door handle so that persons of short stature can more easily and safely open the door. The leash has an upper loop made from elastic material for attaching to the door handle and also to provide shock absorption when a user tugs on the leash. The leash also has a lower loop having an adjustable length so that the overall length of the leash can be set to conform to the particular door handle height of a particular recreational vehicle. A keeper may be provided to keep the lower loop in a more flattened condition to make the lower loop more manageable.
    Type: Application
    Filed: October 26, 2005
    Publication date: April 26, 2007
    Inventor: David Hamilton
  • Publication number: 20070007781
    Abstract: Detachable Clearance Wands are disclosed. The wands provide a driver of a large vehicle having slideout compartments with a clear dimension for the extension length of the slideout. The wands are attachable to the vehicle's side prior to parking it to provide the extension length without risk of damage to the slideout. The wands are length-adjustable so that they can be configured for any length slideout.
    Type: Application
    Filed: July 6, 2005
    Publication date: January 11, 2007
    Inventor: David Hamilton
  • Publication number: 20070006791
    Abstract: Detachable Clearance Wands are disclosed. The wands provide a driver of a large vehicle having slideout compartments with a clear dimension for the extension length of the slideout. The wands are attachable to the vehicle's side prior to parking it to provide the extension length without risk of damage to the slideout. The wands are length-adjustable so that they can be configured for any length slideout. In an alternate embodiment, the wands are comprised of several pieces of wand material interconnected to one another, such that the wand can be collapsed for consolidation and storage when not in use.
    Type: Application
    Filed: March 28, 2006
    Publication date: January 11, 2007
    Inventor: David Hamilton
  • Publication number: 20060242498
    Abstract: A method of optimising a digital test signal for testing an analogue or mixed-signal circuit comprising determining a measure, for example a figure of merit, that is indicative of differences between the output of a fault free and the output of a known faulty circuit in response to an applied digital input signal. The digital input signal is then varied and another figure of merit is calculated for the fault free and the known faulty circuit for the new input signal. This is repeated a number of times, the digital input signal being varied each time. An optimum test signal is selected based on the determined figures of merit.
    Type: Application
    Filed: June 17, 2003
    Publication date: October 26, 2006
    Inventors: David Hamilton, Brian Stimpson, Mahmoud Bekheit
  • Publication number: 20060235985
    Abstract: A SAN management software program controls access to resources in the SAN by associating individual users with one or more administration domains. A user that is associated with an administration domain that includes a port of a SAN switch can configure or otherwise access the port but is restricted from accessing ports outside of that administration domain. Likewise, access to other sub-fabric resources can be restricted and allowed to individual users and users in specific roles or groups. In this manner, the SAN administrative user has very specific control over which users can access which SAN resources and what level of access these users are granted.
    Type: Application
    Filed: April 13, 2005
    Publication date: October 19, 2006
    Inventors: Gurumurthy Ramkumar, Hans Henriquez, David Hamilton, Xinyu Zhang, Parry Kejriwal
  • Publication number: 20060020152
    Abstract: A method for the low temperature selective oxidation of hydrogen contained in a feed comprising hydrogen and dehydrogenatable hydrocarbons and, in particular, for selectively oxidizing the hydrogen of a dehydrogenation reactor effluent. The feed is contacted under low temperature selective oxidation reaction conditions and in the presence of oxygen with a selective oxidation catalyst that is preferably a noble metal supported on an inorganic support material. The low temperature selective oxidation reactor can be operated in combination with a dehydrogenation reactor and a compressor in a manner so as to lower the operating pressure of the dehydrogenation reactor and thereby improve its operation.
    Type: Application
    Filed: July 22, 2004
    Publication date: January 26, 2006
    Inventors: Eugene Theobald, David Hamilton, James Wambaugh
  • Publication number: 20050282729
    Abstract: Included in the present invention are methods of inhibiting sperm capacitation, inhibiting the phosphorylation of a protein at tyrosine residues, inhibiting an acrosomal reaction, and inhibiting fertilization of an egg by sperm with the administration of a CRISP polypeptide.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 22, 2005
    Applicant: Regents of the Univeristy of Minnesota
    Inventors: David Hamilton, Kenneth Roberts, Kathy Ensrud
  • Patent number: 6952208
    Abstract: A method of displaying nodes within a network topology. Using a processor coupled to a display screen, the method involves forming a first layer of a multi-layer representation wherein at least two nodes are represented separately; and grouping the nodes of the first layer into group nodes to form a second layer in the multi-layer representation. In addition, the method groups the group nodes of the second layer into a third layer, the third layer having at least one connected-superset node containing group nodes with nodes connected to each other, and at least one isolated-superset node containing group nodes having nodes isolated from each other. The method displays the superset nodes in the third layer so the connected-superset node is separate from the isolated-superset node and such that the connected-superset node is selectively expandable to display group nodes and connections between the nodes, and the isolated-superset node is selectively expandable to display group nodes of the second layer.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: October 4, 2005
    Assignee: SANavigator, Inc.
    Inventors: Louis Arquie, David Hamilton, Kenneth M. Turner
  • Publication number: 20050170556
    Abstract: A wire bonder (900) with a rigid pedestal (902) having resilient inserts (920). A package (904) placed on the pedestal (902) contains an electrical device (906). The bond pads on the electrical device (906) are electrically connected to bond pads on the package (904) by a series of bond wires (908) through use of a well know bonding process. A vacuum source holds the package (904) against the pedestal (902) deforming the resilient strips (920) located in the rigid member (902) of the pedestal and ensuring good contact between the ground pads of the package (904) and conductive resilient members (920). The resilient members (920) are conductive and electrically connect the package grounds to a system ground (922).
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Jeffrey Marsh, R. White, David Hamilton
  • Publication number: 20050139871
    Abstract: A MEMS incorporating a sensing element and a JFET electrically connected to the sensing element is fabricated by the steps of: forming a first layer of electrically insulating barrier material on a surface of a substrate; patterning the first layer so as to expose a first region of the substrate; doping by ion implantation the first region of the substrate to form a well region of the JFET; forming a second layer of barrier material on the surface of both the first layer and the first region of the substrate; patterning the barrier material so as to expose a part of the first region of the substrate; doping by ion implantation the exposed part of the first region of the substrate to form source and drain contact areas of the JFET; patterning the barrier material so as to expose a second region of the substrate; and doping by ion implantation the second region of the substrate to form gate and substrate contact areas of the JFET in a single implantion step.
    Type: Application
    Filed: March 19, 2003
    Publication date: June 30, 2005
    Inventors: Kevin Brunson, David Hamilton, Robert Tremayne Bunyan, Mark McNie
  • Publication number: 20050104675
    Abstract: A micro-electromechanical system (MEMS) comprises a substrate incorporating an oscillatory ring, forcing electrodes for driving the ring into resonance, and sensing electrodes providing an electrical output signal dependent on oscillation of the ring as a result of such forcing and any externally applied force. A positive feedback circuit is provided for feeding back a signal dependent on the output signal of the sensing electrodes to the forcing electrodes in order to sustain oscillation of the ring. The use of positive feedback to drive the forcing electrodes in order to sustain oscillation of the ring is highly advantageous in such an application since it produces a system which exhibits very low phase noise of a magnitude considerably less than the phase noise experienced in use of a phase-lock loop circuit to sustain oscillation.
    Type: Application
    Filed: March 19, 2003
    Publication date: May 19, 2005
    Inventors: Kevin Brunson, David Hamilton, David King, Mark McNie
  • Publication number: 20050080309
    Abstract: 100551 A catalytic distillation process for isomerizing and separating 1-alkenes from a mixed alkene stream. The process comprises contacting a mixed alkene stream comprising the 1-alkene and homologs thereof with a supported isomerization catalyst under isomerization/distillation conditions effective to convert at least a portion of the homologs to the 1-alkene, the isomerization/distillation conditions also being effective to produce a distillation overhead comprising a sufficient portion of the -alkene to drive isomerization of the homologs to the 1-alkene while maintaining the mixed alkene stream at least partially in liquid phase. The isomerization/distillation conditions are effective to recover a quantity of 1-alkene greater than an equilibrium quantity of 1-alkene recovered under isomerization conditions alone.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 14, 2005
    Inventors: Manuel Cano, David Hamilton, Terry Thomason
  • Patent number: D544386
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: June 12, 2007
    Assignee: DC2 Enterprises, LLC
    Inventor: David Hamilton