Patents Represented by Attorney C. A. Rowley
  • Patent number: 6201224
    Abstract: A method of producing a consolidated composite wood product composed of discrete wood elements and a binder by forming a layup and preheating only a central longitudinal portion of the layup by application of microwave energy across the longitudinal axis and then pressing to consolidate the layup and applying further microwave energy in a direction perpendicular to the direction of the application of the preheating microwave energy through the sides of the compressed layup in the press.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: March 13, 2001
    Assignee: Trus Joist MacMillan Limited
    Inventors: Mark Trelawny Churchland, Robert Leeson Pike, Norbert Kott
  • Patent number: 6195083
    Abstract: A joystick composed of a stator formed by an outer cage forming an inner cubic compartment containing an inner cube oriented with its wall spaced from and substantially parallel corresponding wall of the compartment. Opposed magnets are position in cooperating relationship on opposed walls of the compartment and cube and define a gap therebetween. A floater formed by a plurality of flat actuating coils, one positioned in each gap and each thinner than the width of the gap in which it is received. Preferably the ratio of coil thickness to gap width is at least 1:3. Preferably an optical position sensor is used to monitor the relative position of the flotor and stator and is composed of at least one linear light position sensor mounted on one of the stator and flotor and a plurality of planar light beams arranged at an angle to each other on the other of the stator and flotor and directed to the linear light position sensor(s) so that the light beams traverse the linear light position sensor(s).
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 27, 2001
    Inventors: Septimiu E. Salcudean, Niall R. Parker
  • Patent number: 6187208
    Abstract: Tank cleaning system is formed by an upper deck having a spout potion and a deck portion, injectors and a separation chamber having a conical bottom wall and a top formed by a waste baffle. The injectors connect the deck portion with the separation chamber so that the waste baffle and upper deck are axially separated to provide an outlet passage therebetween. The injector passages direct water through the upper deck and waste baffle into the lower chamber and impart a significant velocity component tangential to the chamber to the water flowing therethrough to impart a helical flow to the water in the chamber. A debris outlet passage is provided adjacent to the bottom of the lower portion of the chamber. The dirt laden stream enters the chamber through the injectors and dirt is separated by centrifugal action in the chamber and rejected through the debris outlet while the cleaned water passes through the outlet passage and is returned to the surrounding water.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: February 13, 2001
    Assignee: Future Sea Technologies Inc.
    Inventor: Theodore Baxter White
  • Patent number: 6182405
    Abstract: A window frame provided with a tapered sub-sill that is mounted on the wall and via a plurality of spaced spacers tapered in the opposite direction to support the main frame sill element in its substantially horizontal position. The use of the tapered sub-sill and tapered spacers permit the sealing membrane positioned between the wall structure and the wall facing to pass therebetween and provide a good seal and provide a solid base for the main sill. In the preferred arrangement, a snap in seal is connected to the outside bottom edge of the sill and forms a seal between the facing layer and the sill and provides a projecting flashing to redirect rain.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: February 6, 2001
    Assignee: Marzeu Artistic Aluminum LTD
    Inventor: Edmond Carl Lindahl
  • Patent number: 6134714
    Abstract: An enhanced personal cooling garment has an inner layer and outer layer that define a confined space or bladder therebetween for containing liquid water. The inner and outer layer are thin materials that are impermeable to both air and liquid water yet permeable to water vapour. The garment is worn in a manner such that the innermost layer is in direct contact with the wearer's skin. The liquid water between the layers diffuses as vapour through the outer layer; it removes latent heat required for evaporation hence provides cooling to the human body. As both layers of the garment are permeable to water vapour, sweat produced by the wearer can diffuse through the innermost layer, where it will then condense into liquid. When worn beneath an air-cooling garment that distributes cool; dry air over the body, the rate of evaporation increases, resulting in even greater enhancement of cooling of the wearer.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: October 24, 2000
    Assignee: Mustang Survival Corp.
    Inventor: Wendell Vaughn Uglene
  • Patent number: 6124584
    Abstract: A method of determining the moisture content of charge of wood having a moisture content below fiber saturation and being subjected to a Radio Frequency dielectric heating process to the degree required to control the process (e.g., terminate drying) by measuring the wood product package dimensions and monitoring the RF power KW and RF voltage KV being applied to the charge at the electrode(s) and further controlling (i.e., terminating) the process when the KW and KV being applied based on a pre-selected function indicates that the charge has reached a preselected moisture content.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: September 26, 2000
    Assignee: HeatWave Drying Systems Inc
    Inventors: Glenn Craig Blaker, Terry Albert Enegren, Gary Kenneth Kooznetsoff, Robert Lewis Zwick
  • Patent number: 6093320
    Abstract: Tank cleaning system is formed by an upper deck having a spout potion and a deck portion, injectors and a separation chamber having a conical bottom wall and a top formed by a waste baffle. The injectors connect the deck portion with the separation chamber so that the waste baffle and upper deck are axially separated to provide an outlet passage therebetween. The injector passages direct water through the upper deck and waste baffle into the lower chamber and impart a significant velocity component tangential to the chamber to the water flowing therethrough to impart a helical flow to the water in the chamber. A debris outlet passage is provided adjacent to the bottom of the lower portion of the chamber. The dirt laden stream enters the chamber through the injectors and dirt is separated by centrifugal action in the chamber and rejected through the debris outlet while the cleaned water passes through the outlet passage and is returned to the surrounding water.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: July 25, 2000
    Assignee: Future Sea Technologies Inc
    Inventor: Theodore Baxter White
  • Patent number: 6094623
    Abstract: An adaptive system applicable to non-ideal measurement operations wherein the reference signal includes information attempting to be extracted from the primary signal and wherein digital non-linear manipulation is applied to the signal to noise ratio in the reference signal.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: July 25, 2000
    Assignee: The Governors of the University of Alberta
    Inventors: Martin Pavlov Mintchev, Tyler Lee Brandon, Herbert Tabler
  • Patent number: 6080978
    Abstract: A dielectric drying kiln material handling system includes a bottom electrode incorporating a conveyor system for moving material along said bottom electrode for moving material on and off of the electrode. Conveyors are built into the electrode in a manner so that the electrode surface of the bottom electrode, i.e. the surface contacting material to be dried is configured with gaps having dimensions so that the gaps do not significantly affect the uniformity of the power distribution over the electrode surface. Various types of conveyors may be used such as slat conveyors, roller conveyors, belt conveyors and the like provided the gaps, i.e. between the slats receiving the rollers or for accommodating the return rollers belt type conveyor are configured with dimensions so that the gaps do not significantly affect the uniformity of electromagnetic field and power distribution over the effective surface of the bottom electrode.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: June 27, 2000
    Assignee: HeatWave Drying Systems Ltd.
    Inventors: Glenn Craig Blaker, Terry Albert Enegren, Yiu Kwan Ho, Gary Kenneth Kooznetsoff, Robert Lewis Zwick
  • Patent number: 6061100
    Abstract: A method of reducing noise in video signal, by processing the pixels of a process frame of video signal in conjunction with a selected number of previously processed frames to determine values for target pixels in the process frame by applying a temporal motion detector to determine whether a target pixel has a still or motion status and further processing the pixels with motion status by impulse recognition step to further determine whether the pixel should be classified as having a still or a motion status. The pixels are then checked via a spatial motion detecting step to obtain a motion index value to the pixels and the motion index value is used in a motion adaptive temporal filter to define the pixel value of the still pixel. The motion index value of the pixels is used to set a dynamic threshold in a detailed motion active spatial filter to define the pixel value for the motion pixels.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: May 9, 2000
    Assignee: The University of British Columbia
    Inventors: Rabab K. Ward, Julong Du, Pingnan Shi, Xiaoli Li
  • Patent number: 6052094
    Abstract: The effect of rain wetting a planar array antenna is reduced substantially by mounting the antenna with its radiating face facing downwards on an angle .alpha. of about 30-80.degree. to the horizontal and adjusting the angle .theta. of the main beam of the planar array antenna to its radiating face so that the angle .theta. of the main beam to the radiating face of the antenna and the angle .alpha. of the radiating face to the horizontal combine to direct the main beam at the elevation angle .omega. toward a selected target.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: April 18, 2000
    Inventors: Mostafa Z. Kharadly, Amiee Y. Chan
  • Patent number: 6047610
    Abstract: A six degree of freedom structure forming a robotic manipulator, consisting of two five-bar linkages (30 and 80) set on rotatable base linkages (18 and 58); the output points (44 and 94) of the five-bar linkages (30 and 80) are attached to a rigid payload platform (48) by universal joints (46 and 96), respectively. Each linkage (30 and 80) on its rotatable bass can position its output point in three degrees of freedom, but since the two five-bar linkages (30 and 80) are tied together at the platform (48), five degree of freedom motion of the platform (48) results--three degrees of freedom in translation, and two of rotation. A seventh motor (100), mounted for example on one of the five bar linkages, provides power to rotate the platform about the axis defined by the two universal joints (46 and 96). The rotational torque is coupled through one of the universal joints (46 or 96).
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: April 11, 2000
    Inventors: Leo J Stocco, Septimiu E Salcudean
  • Patent number: 6045762
    Abstract: An apparatus for catalytic distillation consists of alternatively a catalyst unit and an active liquid distributor tray. The catalyst unit is formed by series of troughs containing catalysts with spaces between adjacent troughs for vapor flow. The active liquid distributor tray is preferably a V-shaped tray formed with collectors that function as both a liquid distributor to deliver liquid at the appropriate locations to the underneath catalyst unit and a mass transfer device. Liquid flows down to the catalyst toughs from bottom of the sump of each collector and vapor flows up through the upper diverging walls of the collector. Packing materials may be placed on the tray or in the spaces between the troughs or both to enhance mass transfer. The catalyst troughs preferably are partitioned to cause the liquid to flow through the catalyst and to overflow the upper rim of the troughs to escape therefrom whereby the catalyst is maintained submerged.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: April 4, 2000
    Assignee: Governors of The University of Alberta
    Inventors: Karl Tze-Tang Chuang, Zhanping Xu
  • Patent number: 6032640
    Abstract: The control system disconnects the throttle from direct connection with the accelerator pedal, which sets the power requirements or demand. The demand signal passes to a computer control or microprocessor which electronically controls the throttle as a function of the engine operating conditions and pre-established values for controlled parameters stored in bitmaps in the microprocessor's memory. It is preferred to use a fuel injecting stratified charge spark plug in conjunction with the electronic control system and use the electronic control system to control the primary and auxiliary fuel injection systems as well as the ignition timing to permit the engine to run under very lean conditions to produce low levels of emissions such as nitrogen oxides, hydrocarbons, and carbon monoxide.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: March 7, 2000
    Assignee: The University of British Columbia
    Inventor: Robert Lancelot Evans
  • Patent number: 6027315
    Abstract: A simplified control valve system is provided wherein a single multi-functional orifice provides the required bleed from the control cylinder chamber as well as the required venting of the system for blow down. Preferably, the control line will be an oil scavenger line and the multi-functional orifice will be positioned in the inlet passage of the valve to the compressor and a suitable oil sump positioned adjacent to the multi-optional orifice to collect any oil blown there through during blow down. The valve of the present invention is also adjustable by rotating the valve stem to which the control piston is connected.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: February 22, 2000
    Assignee: VMAC Division of Mangonel Corporation
    Inventor: James Victor Hogan
  • Patent number: 6024711
    Abstract: Osteoporosis may be detected in-vivo by applying an acoustic sensor in contact with the skin of the patient while subjecting the patient to stress, for example, by lifting light weights and measuring the acoustic emissions sensed by the acoustic sensor to provide an indication of the degree of osteoporosis damage incurred by the bones of the patient being diagnosed.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: February 15, 2000
    Assignee: The University of British Columbia
    Inventors: Brian C. Lentle, John E. Aldrich, Ainul Akhtar
  • Patent number: 5972397
    Abstract: A method for producing dehydrated potato slices, specifically suitable for making French fries and French fries produced therefrom, utilizes the application of microwave energy under selected vacuum conditions and a specific range of microwave energy application to produce dried potato slices having a water activity of no more than 0.85.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: October 26, 1999
    Assignee: The University of British Columbia
    Inventors: Timothy Douglas Durance, Richard Schlomer Meyer, Dragan Macura
  • Patent number: 5972266
    Abstract: The resistant to biological degradation of composite wood products is improved by applying a suitable aqueous dispersion of zinc borate onto the fibers to uniformly distribute and to adhere the zinc borate to the strands of the wood composite, applying a suitable adhesive to the wood strands, forming a strand lay-up and consolidating a lay-up under heat and pressure to form a consolidated product with zinc borate uniformly distributed therethrough.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: October 26, 1999
    Assignee: Trus Joist MacMillan a Limited Partnership
    Inventors: David Fookes, Marek Jan Gnatowski, Robert Leeson Pike, Derek Alexander Templeton
  • Patent number: D437517
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: February 13, 2001
    Assignee: Burrard Technologies Corporation
    Inventor: Phillips Ross Murray
  • Patent number: D416225
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: November 9, 1999
    Assignee: Inuktun Services Ltd.
    Inventors: Allen Clifford Robinson, Terrence Tracy Knight