Patents Represented by Attorney Hill & Schumacher
  • Patent number: 6969941
    Abstract: A system for obtaining inline sensory feedback from an electroactive polymer based transducer for use in feedback control applications is disclosed. Specifically a method of obtaining sensory feedback from an electroactive polymer based transducer includes the steps of: receiving a user input in a control system, combining it with a control system feedback signal from a sensory feedback circuitry and producing a control signal; receiving the control signal in an amplifier and sensory tone generator, combining it with an amplifier feedback signal from the sensory feedback circuitry and producing a power signal; receiving the power signal and an environmental disturbance in an electroactive polymer transducer and sensory circuitry and responsive to the user input producing a sensory signal; receiving the sensory signal in the sensory feedback circuitry and producing the control system feedback signal and the amplifier feedback signal; and producing a data output in the control system.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: November 29, 2005
    Assignee: Engineering Services Inc.
    Inventors: Alex Kapps, Landy Toth, Andrew A. Goldenberg
  • Patent number: 6969480
    Abstract: A variety of hollow structures with unique morphologies were manufactured with a rotational spinning technique. Phase separation of soluble solutions or emulsions was induced within a filled mold as it was being rotated about one of its axis. The density difference between phases results in sediment at the inner lumen of the mold under centrifugal forces. After or during sedimentation, gelation of the phase-separated particles fixes the hollow structure morphology and the solvent remains in the center of the mold. The solvent is removed from the mold resulting in a coating or tube. By controlling the rotational speed and the formulation chemistry, the tube dimensions and wall morphology can be manipulated. This technique offers a new approach to the manufacture of polymeric tubes. It requires small quantities of starting material, permits multi-layering of tubes, is applicable to diverse polymers and can result in highly diffusive hollow structures while maintaining good mechanical strength.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: November 29, 2005
    Assignee: matRegen Corp.
    Inventors: Paul D. Dalton, Molly S. Shoichet, Stephane G. Levesque
  • Patent number: 6969030
    Abstract: The present invention provides a docking mechanism that is capable of interfacing with Apogee Boost Motors (ABM) including Liquid Apogee Motors (LAM) of the satellite being captured to allow a servicing spacecraft to dock with a satellite that has no special docking features. The docking mechanism includes a compliant probe with spring-loaded fingers at its tip which is inserted into the LAM by the approach motion of the servicer spacecraft. When the probe tip has passed beyond the throat of the LAM the finger extend to trap the LAM on the probe thus achieving capture. The rigidization stage of docking is achieved by retracting the probe to pull the two spacecraft together. The docking mechanism includes abutment pads which interface with the launcher interface ring of the client spacecraft.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: November 29, 2005
    Assignee: Macdonald Dettwiler Space and Associates Inc.
    Inventors: Howard Martin Jones, Pat Malaviarachchi, Andrew Charles MacKenzie Allen, Mariano Ficocelli, Geoffrey William Frederick Sprawson
  • Patent number: 6947363
    Abstract: This invention provides a method of acquisition of binary information that has been stored physically in a periodic storage medium. The method, referred to as matrix-method deconvolution (MMD), is useful for use with optical storage media using an optical addressing system that reads and writes binary information in a periodic array of nano-particles. With this MMD method, the density of existing memory systems can be boosted to between 10 and 100 Terabytes of data per cubic centimeter. This matrix-method deconvolution method compensates for the effects of the optical addressing system's point spread function. Prior knowledge of a system's point spread function and inter memory-center spacing is used.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: September 20, 2005
    Inventors: Darren Kraemer, Bradley Siwick, R. J. Dwayne Miller
  • Patent number: 6936200
    Abstract: A process for producing plastic/wood fiber composite foamed structures includes the steps of pre-drying wood fiber filler; mixing it with plastic to form a mixture; feeding the mixture into an extruder; introducing and mixing a blowing agent; subject the mixture to high shear forces and extruding the mixture to produce a plastic/wood fiber composite foamed structure. The filler has a degradation temperature and an active volatization temperature. During the pre-drying step the temperature is maintained below the degradation temperature. During the mixing step the mixing temperature is maintained below the active volatilizing temperature. During the introducing and mixing step a blowing agent is introduced into the plastic/wood fiber mixture and is mixed therewith to produce a plastic/wood fiber/gas mixture. During the subjecting step the plastic/wood fiber/gas mixture is subjected to high shear forces in the presence of high pressures and the temperature is maintained below an active volatilizing temperature.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: August 30, 2005
    Inventors: Chul B. Park, Ghaus M. Rizvi, Haiou Zhang
  • Patent number: 6931975
    Abstract: A circular saw blade includes a generally circular blade portion and a plurality of spaced apart teeth attached to the circular blade portion. Each tooth extends outwardly and upwardly from the circular blade portion. Each tooth has a leading edge and a dimple formed therein proximate to a leading edge. Each tooth has a positive rake. Preferably the positive rake is in a range of between about 20 and about 45 degrees.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: August 23, 2005
    Inventors: Keith Louis Haughton, Glenn Wallace Haughton
  • Patent number: 6919488
    Abstract: A process for producing saleable liquids from organic material comprising the following steps. Providing organic material and separating it into solids, liquids and vapor. Reacting the liquids, combining it with water vapor and producing a volatized gas stream. Removing nitrogen dioxide from the gas stream to produce a scrubbed volatized gas stream. Reacting the scrubbed volatized gas stream with water vapor to produce a combined volatized gas stream. Removing carbon dioxide from the combined volatized gas stream to produce a subtracted volatized gas stream. Reacting the subtracted volatized gas stream with methanol to produce an enhanced volatized gas stream. Distilling the enhanced volatized gas stream to produce ethanol.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: July 19, 2005
    Assignee: Woodland Chemical Systems, Inc.
    Inventors: Larry Jack Melnichuk, Karen Venita (Sue) Kelly
  • Patent number: 6887386
    Abstract: A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: May 3, 2005
    Assignee: The University of Western Ontario
    Inventors: Amarjeet Singh Bassi, Jingxu Zhu, Qingdao Lan, Argyrios Margaritis, Ying Zheng
  • Patent number: 6879946
    Abstract: The present invention relates to a method of intelligent 2D and 3D object and scene modeling, transformation and manipulation and more particularly this invention relates to the field of computer modeling, virtual reality, animation and 3D Web streaming. The method uses attributed hypergraph representations (AHR) for modeling, transforming and manipulating objects. From one or more 2D views of a 3D object or scene, range information is first computed and then a triangular mesh model is constructed. The data structure is designed to handle the transformations on the representation corresponding to movements and deformations of the object. In an attributed hypergraph, the attributes associated with the hyperedges and the vertices facilitates modeling of various shapes with geometrical, physical or behavior features.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 12, 2005
    Assignee: Pattern Discovery Software Systems Ltd.
    Inventors: Li Rong, Andrew K. C. Wong
  • Patent number: 6878417
    Abstract: A method for mask-free molecular or atomic patterning of surfaces of reactive solids is disclosed. Molecules adsorb at surfaces in patterns, governed by the structure of the surface, the chemical nature of the adsorbate, and the adsorbate coverage at the surface. The surface is patterned and then imprinted with the pattern by inducing localized chemical reaction between adsorbate molecules and the surface of the solid, resulting in an imprint being formed in the vicinity of the adsorbate molecules. When the imprinted molecular patterns are conjugated chains containing ? bonds along which electrical charge can flow the molecular patterns constitute molecular wires or the imprinted molecules constitute a molecular-scale device. The surface of the substrate can be doped by including n- or p-type dopants in the adsorbate molecules. These molecular wires are anchored to the substrate by using conjugated chains which can be chemically bound at intervals along the chains to the substrates.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: April 12, 2005
    Inventors: John C. Polanyi, Duncan Rogers
  • Patent number: 6875442
    Abstract: A polymer scaffold is provided comprising an extensively interconnected macroporous network. The polymer scaffold embodies macropores having a diameter in a range of 0.5-3.5 mm, and preferably in a range of about 1.0-2.0 mm. The polymer scaffold is prepared using a novel process which advantageously combines the techniques of particulate leaching and phase inversion to render a process that provides amplified means by which to control the morphology of the resulting polymer scaffold. The polymer scaffold has utility in the area of tissue engineering, particularly as a scaffold for both in vitro and in vivo cell growth.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: April 5, 2005
    Assignee: Bonetec Corporation
    Inventors: Chantal E. Holy, Molly S. Shoichet, John E. Davies
  • Patent number: 6870970
    Abstract: The present invention provides a method for fast switching of optical properties in photonic crystals using pulsed/modulated free-carrier injection. The results disclosed herein indicate that several types of photonic crystal devices can be designed in which free carriers are used to vary dispersion curves, stop gaps in materials with photonic bandgaps to vary the bandgaps, reflection, transmission, absorption, gain, or phase. The use of pulsed free carrier injection to control the properties of photonic crystals on fast timescales forms the basis for all-optical switching using photonic crystals. Ultrafast switching of the band edge of a two-dimensional silicon photonic crystal is demonstrated near a wavelength of 1.9 ?m. Changes in the refractive index are optically induced by injecting free carriers with 800 nm, 300 fs pulses. Band-edge shifts have been induced in silicon photonic crystals of up to 29 nm that occurs on the time-scale of the pump pulse.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: March 22, 2005
    Inventors: Stephen W. Leonard, Henry M. van Driel, Jorg Schilling, Ralf Boris Wehrspohn, Ulrich Gosele, Stefan Senz
  • Patent number: 6869048
    Abstract: An instrument package for carrying on board observation instruments is for launching from space. The instrument includes a housing, a power supply, a communication system and an internal instrument volume. The housing includes a protective skin and adapted to be launched from space. The power supply is secured in the inside of the housing. The communication system is operably connected to the power supply for transmitting data to a location remote from the instrument package. The internal instrument volume is inside the housing and is adapted to receive scientific instrument connectable to the communication system. The instrument package may include an on board control system operably connected to the power supply.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: March 22, 2005
    Assignee: Good Vibrations Engineering Ltd.
    Inventors: Sherry Draisey, Mayes Mullins
  • Patent number: 6868967
    Abstract: A tool box is for holding a plurality of tools and tool parts. The tool box includes a base, a lid and at least one tray. The base has at least one row. The lid is attached to the base. Each tray has at least one receiving device adapted to receive one of a predetermined tool and tool part. Each tray is releaseably attachable in a row and includes a magnetic method of holding the tray in the row. The tool box may include a plurality of rows. The magnetic holding method may include a metal strip attached to the bottom of each row and a plurality of magnets attached to the bottom of each tray.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: March 22, 2005
    Assignee: Mibro Partners
    Inventor: Andy Lam
  • Patent number: 6846578
    Abstract: Method of synthesis of confined colloidal crystals using electrodeposition. The present invention provides a method of growing confined colloidal crystal structures using electrodeposition of monodispersed charged colloid spheres onto a substrate patterned with an array of electroconductive surface relief features on a surface of a substrate. In this approach, control over large-scale ordering is achieved via a planar pattern whose scale is on the order of tens of microns, a regime readily accessed through coarse lithography, laser micromachining, and holography.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: January 25, 2005
    Inventors: Eugenia Kumacheva, Edward H. Sargent, Robert Kori Golding, Mathieu Allard
  • Patent number: 6845929
    Abstract: The present invention provides a spray gun with associated nozzle attachments for high deposition efficiency for thermal spray of high quality, dense, low oxide content coatings. The spray guns are used to produce coatings using a thermal spray process, a high velocity oxy-fuel process, a high velocity air-fuel process, cold spraying, and plasma spraying in which the process is characterized by having an over-expanded flow with a Mach number from about 1.0 to about 4.0 which have passageway section which diverges to the gun outlet. In one embodiment the nozzle attachment is another diverging section with a greater angle of divergence than the diverging nozzle section. In another embodiment the nozzle attachment includes the aforementioned diverging nozzle attachment section followed by a converging nozzle section having an outlet section through which the thermal spray is emitted.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: January 25, 2005
    Inventors: Ali Dolatabadi, Javad Mostaghimi, Valerian Pershin
  • Patent number: 6844714
    Abstract: The present invention provides a charge monitor for satellites for monitoring build up of electric charge due to charge particle fluxes impinging on the satellite. In one aspect of the invention the charge monitor includes an electrically conducting housing including at least two compartments with each compartment including a dielectric slab contained therein. An electrically conducting electrode is embedded in each dielectric slab a pre-selected distance below a top surface of the dielectric slab, the housing being mountable on a satellite with the top surface of the dielectric slab facing outwardly into space away from the satellite whereby charged particles emitted from sources external to the satellite penetrate the dielectric slab resulting in charge accumulation in each electrically conducting electrode, each electrically conducting electrode being electrically isolated from all other electrically conducting electrodes in the electrically conducting housing.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: January 18, 2005
    Inventors: Keith G. Balmain, Peter C. Kremer, Gerald R. Dubois
  • Patent number: 6844040
    Abstract: The invention comprises reinforced composite structural members which are formed by bonding reinforcing sections to predetermined areas on the outside surface of a hollow profile formed from a thermoplastic resin cellulosic fiber composite material, where the predetermined areas are located substantially away from the center of mass of the composite profile. The reinforcing sections have a higher modulus than the composite material used to form the hollow profile. The invention also comprises processes for forming these reinforced composite structural members.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: January 18, 2005
    Inventors: Arunas Antanas Pabedinskas, Werner Karl Hermann Gregori
  • Patent number: 6833185
    Abstract: The present invention provides powder fluidization additives for increasing flowability of fine powders. The powder fluidization additives have both a smaller size than the fine powder and a mean apparent particle density less than the mean apparent particle density of the fine powder. The particles of the additive act to separate the fine powder particles and reduce interparticle forces allowing the flowability of the fine powder to be increased.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: December 21, 2004
    Assignee: The University of Western Ontario
    Inventors: Jesse Zhu, Hui Zhang
  • Patent number: D513387
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: January 3, 2006
    Assignee: DEB IP Limited
    Inventor: Dean Philip Limbert