Patents Represented by Attorney, Agent or Law Firm Robert A. Wilkes
  • Patent number: 6826980
    Abstract: The present invention seeks to provide a system for high speed intermittent motion. The system consists of one or more intermittent motion generators. Each motion generator consists of a first and a second drive system with each drive system having its own control software and control input information received from a programmable logic controller (PLC). Each motion generator employs dual cams with fixed angular rotation. The dual cam combination consists of a first cam nested within a second cam. The dual cams permit independent and individual motion generation for each motion generator. The angular rotation of the second cam relative to the angular rotation of the first cam causes a linear displacement which generates intermittent linear motion for each individual motion generator.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: December 7, 2004
    Inventor: George Schmideg
  • Patent number: 6822488
    Abstract: The present invention provides a method and apparatus which provides a signal with an output frequency higher than an input frequency. A phase generator generates multiple phase signals from the input signal with each phase signal having the same frequency as the input signal but being out of phase with the input signal by multiples of a set time interval. These phase signals are transmitted to a multiplexer. The multiplexer output is determined by a select word generated by an accumulator from a stored value. The accumulator is clocked by the multiplexer output and the accumulator adds a control word with a set value to the stored value in the accumulator. This addition is accomplished at every cycle of the multiplexer output. By judiciously choosing control word and the time interval between phases, frequencies higher that the input frequency can be generated at the multiplexer output.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 23, 2004
    Assignee: Skyworks Solutions, Inc.
    Inventor: Thomas Atkin Denning Riley
  • Patent number: 6810917
    Abstract: A flat woven papermaker's forming fabric having a paper side layer and a machine side layer interconnected by pairs of machine side layer weft binder yarns. Each of the binder yarn pair members in sequence interlaces with a portion of the machine side layer warp yarns in segments of the weft yarn path so as to complete an unbroken weft path in the machine side layer weave pattern, and to provide an internal machine side layer float. Each of the binder yarn pair floats interweaves with a paper side layer warp yarn so as to bind the paper and machine side layers together. The location of the internal floats in each layer determines the available interweaving locations, not all of which need be used. A wider choice of possible paper and machine side layer weave design combinations is thus made available in forming fabrics, thereby allowing for a better match between the forming fabric and the paper maker's requirements.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 2, 2004
    Assignee: AstenJohnson, Inc.
    Inventor: Richard Stone
  • Patent number: 6795969
    Abstract: A method of establishing a process agent comprising storing a library of first software programs representing system resources, storing a second software program representing a corresponding service agent which includes pointers to associated ones of the first software programs which are represented by the service agent, storing a software program for invoking a general process, including the steps of: requesting a usage right for functional services represented by the service agent required by the general process, sending pointers to system resources required for the general process from the service agent to the software program for operating the general process, and storing the pointers sent from the service agent in association with the software program for operating the general process, and executing the software program for operating the general process using the system resources identified by the stored pointers.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: September 21, 2004
    Assignee: Mitel Corporation
    Inventors: Thomas A. Gray, Deborah L. Pinard
  • Patent number: 6790007
    Abstract: A vertical axis wind turbine including a wind turbine which depends on a vortex down wind of the turbine enhancing the air flow past the vertical turbine. The vertical axis wind turbine structure includes a rectangular shaped turbine with four orbiting panels mounted to rotate at the top of a pyramidal base structure which generates a substantially horizontal vortex immediately down wind of the turbine, thus enhancing the air flow past the turbine.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: September 14, 2004
    Inventors: Mitch Gingras, Simon Giasson, Michel Lauriault
  • Patent number: 6783517
    Abstract: A heart muscle irrigation device comprises a short rivet like member with one closed and one open end, and a barrel including a plurality of holes, slots, an area mesh, or a grid. The irrigation device is inserted into the heart muscle so as to provide a channel from, for example, the left ventricle, to provide an adequate oxygenated blood supply to a starved muscle. The irrigation device is inserted from either outside or inside the rib cage by an insertion device. The insertion device comprises a plunger and barrel assembly adapted to contain the irrigation device. The tip of the insertion device includes members adapted to penetrate the heart muscle. If the irrigation device is inserted through an insertion into the rib cage, an applicator comprising a tubular member with a planar tip including a soft elastomeric seal can be used whereby a portion of the heart muscle is held more or less rigidly for the short period during which the irrigation device is inserted.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: August 31, 2004
    Inventor: Frank B. Stiles
  • Patent number: 6748933
    Abstract: A method and apparatus for conditioning fluid flowing through a conduit in which two coils (50,60) are coiled around the conduit at different locations and connected to a circuit (40) which generates square wave signals which are alternately fed to the two coils (50, 60). The frequency of the square wave is ramped repeatedly from 1.5 Khz to 60 Khz.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 15, 2004
    Inventor: Jacques Prévost
  • Patent number: 6745701
    Abstract: A basket gate mechanism, including two opposed gate segments supported at its ends by pairs of different length arms interconnected by a mechanism to coordinate the movement of the segments which are opened and closed by a double acting hydraulic cylinder simplifying the opening and closing of the gate; a linkage device to support the gates minimizing torsional stress resulting from the gate being angled, and a pair of shear plates to control the level of the solids discharged onto the conveyor.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: June 8, 2004
    Assignee: EMS-Tech Inc.
    Inventor: John B. Elder
  • Patent number: 6707432
    Abstract: Systems and devices for mechanically rotating the polarisation of a signal emanating from or being received by an antenna system. The rotation of the polarisation is achieved by mechanically rotating the feed using a non-metallic drive cord or belt connected to a motor which is displaced outside or behind the radiating aperture. For a linear array of multiple antenna elements, each feed for each antenna element is rotated simultaneously and by an equal amount through the use of a drive system common to all the feeds. The drive system is coupled to each feed and to a drive motor. When the motor is activated, the drive system simultaneously rotates each feed by a given amount. By rotating the feed, the polarisation of the signal is correspondingly rotated and compensation for polarisation loss is provided.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 16, 2004
    Assignee: EMS Technologies Canada Ltd.
    Inventor: Peter C. Strickland
  • Patent number: 6676357
    Abstract: An arcuate structure for bulk particulate solids which has inner and outer concentric containment walls. The space between the inner and outer walls is subdivided into a plurality of storage subspaces, and covered with a continuous roof. A radial stacker conveyor system receives particulate solids to be stored, and transfers these particulate solids into a selected storage space through access apertures disposed on a circular arc in the roof. To allow the radial stacker to access each roof aperture, it is rotatable about an axis concentric with the inner and outer walls, and the roof apertures are located on an arc concentric with the inner and outer walls. A separate radially located conveyor system is provided beneath the floor of each storage space, by means of which particulate solid stored in any chosen storage subspace can be retrieved through discharge gates located in the floor of each storage space above the conveyor, and transported to a delivery system adjacent to the radial stacker.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 13, 2004
    Assignee: EMS-Tech, Inc.
    Inventors: Brian T. Stafford, John B. Elder
  • Patent number: 6676725
    Abstract: Shaped bodies containing particulate iron materials, such as cast pellets, briquettes and the like, with sufficient strength to withstand temperatures of up to at least 1000° C. can be obtained by using a fully hydrated high-alumina cement as the binder. The strength of the pellets at elevated temperatures can be further enhanced by adding small amounts of bentonite, silica fume or other suitable supplementary cementing materials, and super plasticizer. The iron particulate materials, typically having a size range of from about 0.01 mm to 6 mm, include ore fines, sinter fines, BOF and EAF dusts, mill scale, and the like. Powdered carbonaceous material, such as ground coal or coke, may also be added to the pellets. The shaped bodies are suitable for use in blast furnaces, basic oxygen furnaces, and in DRI processes.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 13, 2004
    Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of Natural Resources
    Inventors: Jay Aota, Lucie Morin
  • Patent number: 6673222
    Abstract: A biological activity probe for the detection on-line of the presence of sulphide including an enzyme electrode; a counter electrode; a reference electrode; and if desired a corrosion electrode. The enzyme electrode includes an immobilised source of sulfide oxidase enzyme, together with a cofactor such as 1,1′-dimethylferrocene, immobilised in a water permeable non-conducting binder on a biologically inert electrically conducting substrate. The immobilised source of sulfide oxidase enzyme is either a chemoautotropic microorganism such as a Thiobacillus thioparus, or enzyme material recovered from a culture of a Thiobacillus thioparus.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: January 6, 2004
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources
    Inventors: Sadaksharasundaram S. Papavinasam, William D. Gould, Robert W. Revie, Fraser A. MacLeod, Michael Attard
  • Patent number: 6645267
    Abstract: A process for converting composted organic materials produced by optimized composting procedures into plant growing media for agronomic and other uses. The raw organic matter is first processed into compost by optimized standard methods. If desired, the raw organic matter can be of “organic” sources to provide plant growing media certifiable for use for organically grown food crops. The finished compost is screened to remove coarse particles above about 1 cm diameter, which are recycled back to the composting process. The composted material below approximately 1 cm diameter is further screened to separate out the particles below about 1 cm diameter and above 1 mm. This material is further separated into two size ranges: particles between 1 mm and up to 4 mm diameter (medium), and particles between 4 mm and 1 cm diameter (coarse).
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: November 11, 2003
    Inventor: Henri Dinel
  • Patent number: 6631672
    Abstract: An apparatus is provided for processing large hay bales of approximately 750 kg to produce smaller recompacted manageable units to facilitate shipping in containers. The apparatus provides means for cutting the bales into at least two slabs, preferably three slabs, and means for cutting these slabs into two approximately equal pieces. Means are provided for each piece to be recompressed, strapped and cut again to provide units having an approximate weight of 35 kg.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: October 14, 2003
    Assignee: Hunterwood Technologies, Ltd.
    Inventor: Ed Van Hierden
  • Patent number: 6623351
    Abstract: A modulator transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: September 23, 2003
    Inventor: Louis Brown
  • Patent number: 6593790
    Abstract: A power-up detector for detecting power-up and power supply voltage bump conditions includes a current mirror connected to the power supply. A pair of series connected resistors are connected between the current mirror and ground thereby providing a bias point at a junction of the series connected resistors. A field effect transistor having a source-drain circuit is connected between the current mirror and ground for providing an output signal to an inverter. The field effect transistor being is controlled by the voltage at bias point between the series connected resistors.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: July 15, 2003
    Assignee: Mosaid Technologies Incorporated
    Inventor: Hong Seok Kim
  • Patent number: 6591940
    Abstract: The invention relates to a sliding rail anchor safety device which is slidably mounted to the rail of a railway track. The device consists of a pair of pivotally interconnected jaw like members which defines claw-like structure which is configured to securely, yet slidably engage the rail of a railway track. A locking arm including a pair of alignable apertures defines a bore which receives a karabiner, which is turn connected to a worker's safety belt or tether.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: July 15, 2003
    Inventor: Norman Desjardins
  • Patent number: 6584072
    Abstract: A method of analyzing a communication network comprising determining a mean drop rate in a device x by polling each device from a network management computer (NMC) which is in communication with the network, and processing signals in the NMC to determine a drop rate D(x), in accordance with: D(x)=((L+(x)−L−(x))/2, and L(x)=1−A(x) where A(x): the fraction of poll requests from the NMC to device x for which the NMC receives replies (measured over the last M sampling periods), (wherein x must not be broken), D(x): the mean frame drop rate in device x, L(c): NMC's perception of the loss rate to device x and back, L−(x): the NMC's perception of the mean value of L(z) for all devices z connected to device x, closer to the NMC than device x and which are not broken, and L+(x): the NMC's perception of the mean value of L(z) for all devices z connected to device x, further away from the NMC than device x and which are not broken.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: June 24, 2003
    Assignee: Loran Network Management Ltd.
    Inventor: Nicholas W. Dawes
  • Patent number: 6581645
    Abstract: A composite forming fabric woven to a repeating pattern in at least 6 sheds; up to at least 36 sheds can be used. All of the paper side layer warp yarns are pairs of intrinsic warp binder yarns (101, 102) occupying an unbroken warp path in the paper side surface including three segments. The first and a second are occupied in turn by each intrinsic warp binder yarn (101, 102), and the third by both intrinsic warp binder yarns (101, 102) of a pair. The first, second and third segments are separated by at least one paper side layer weft, and a first or second segment is adjacent each end of the third segment. Within each first and second segment, each intrinsic warp binder yarn (101, 102) also interlaces once with a machine side layer weft (2′, 9′), at the same point as a machine side layer warp (103) interlaces with the same weft (2′, 9′). The weave path occupied by each member of a pair of intrinsic warp binder yarns (101, 102) can be the same or different.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: June 24, 2003
    Assignee: AstenJohnson, Inc.
    Inventors: Dale B. Johnson, Ronald H. Seabrook, Richard Stone
  • Patent number: RE38344
    Abstract: A reliable gaseous hydrogen detection and measuring device which is simple, easy to use, does not require any reference gas supply, and which can be of reasonably rugged construction. The device utilizes a disc comprising a solid state ceramic hydronium conductor of the general formula Na(H3O)Zr2SixP(3−x)O12 Na(H3O)xZr2SixP(3−x)O12 together with a silver based electrode system on one side, and a catalytic noble metal electrode, such as platinum, on the other. By measurement of the output voltage across the electrodes, both the presence, and the amount, of hydrogen in a gaseous system can be determined.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: December 16, 2003
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources
    Inventors: Areekattuthazhayil K. Kuriakose, Nicola Maffei