Patents Represented by Attorney, Agent or Law Firm R. Craig Armstrong
  • Patent number: 6305896
    Abstract: A system for discharging material, having a material holding container, a first material transport device, to transport material from the material holding container, a second material transport device, to deliver material from the first material transport device to a desired location remote from the vehicle and a material hold-down device arranged on the second material transport device. The material hold-down device is movable between a raised position and a lowered position, and holds material securely on the second material transport device until the material has been accelerated up to the desired travel speed. The material hold-down device has a first wheel shaft with a first wheel and a second wheel, a second wheel shaft with a third wheel and an endless belt running from the first wheel shaft to the second wheel shaft and resting upon the first wheel, the second wheel and the third wheel. The first and second wheel shafts are connected by a frame device.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: October 23, 2001
    Inventor: Mark D. Szentimery
  • Patent number: 6296473
    Abstract: Preforms are produced by injection molding in an injection molding machine, allowing enough pre-cooling time within the mold to create a temporary rigid skin on the preforms, and transporting the preforms to a separate cooling device. In the preferred embodiment, the step of transporting the preforms to a separate cooling device includes the steps of removing the preforms into a carrier mounted as an end-of-arm tool on a robot, the carrier having a plurality of orifices to receive the preforms, and using the robot to transport the carrier and the preforms to a cooling device interface. The cooling device interface has a plurality of hoses connected thereto for pneumatically transporting the preforms from the carrier to the cooling device. The preferred apparatus thus includes a robot, and an end-of-arm tool for the robot having a plurality of orifices alignable with mold cavities in the injection molding machine once the mold halves are opened.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: October 2, 2001
    Assignee: Ventax Robot Inc.
    Inventor: Hans-Armin Ohlmann
  • Patent number: 6283291
    Abstract: The case for drill bits or the like provides automatic rotation a holder to an access position on opening the cover, without any linkage to the cover. The rotation may be by virtue of a molded or mechanical spring or other biasing means, such as springiness of a living hinge, for example. Each holder provides multiple holes into or through which drill bits or the like are inserted. The action of closing the cover moves the holders from their access position into a storage position, by contacting one or more of the holders, or one or more of the drill bits. The case can be a one-piece molded construction, or an assembly of various components, e.g. base, cover, holders, and removable stop walls. A locking bar may be provided to prevent removal of drill bits of the type having a recess in their shanks, and the locking bar may be movable between a locked and unlocked position, for example by closing or opening of the cover.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: September 4, 2001
    Assignee: Maxtech Manufacturing Inc.
    Inventors: Kailash C. Vasudeva, Maz A. Hasan
  • Patent number: 6283137
    Abstract: An improved priming assembly which maybe used for siphoning, includes a siphon tube comprising an inlet end and a discharge end. The discharge end may be connected to a discharge hose that leads to a discharge area. A one-way valve is inserted within the tube adjacent to the inlet end of the tube. The valve comprises a flexible rubber sheath a portion of which is sealed to the inner surface of the tube and which extends toward the discharge end. The sheath is movable from an open position to a closed position. When fluid is caused to flow from the inlet end to the discharge end, the sheath moves to its open position allowing fluid flow. When fluid is caused to flow from the discharge end toward the inlet end, the sheath collapses to the closed position such that it prevents flow of fluid toward the inlet end. Priming of the siphon is created when the sheath collapses into its closed position, under the weight of the fluid as the rigid siphon tube is thrust upwardly.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: September 4, 2001
    Inventor: Steven Joseph Malecki
  • Patent number: 6280238
    Abstract: A communication jackfield having a face plate, a plurality of jacks and a designation plate. The designation plate is of a generally elongate flat shape, and has a plurality of jack barrel access holes, for allowing a front end of each of the jack barrels to protrude into respective jack barrel access hole, when jacks are mounted onto the face plate. The designation plate further has a first strip holder and a second strip holder, each strip holder having a longitudinal lower flange and a longitudinal upper flange arranged to securely hold a strip of information marking material. The designation plate covers substantially all of a front side of the face plate, and further has jack screw access holes arranged in conjunction with each jack barrel access hole.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: August 28, 2001
    Assignee: AVP Mfg. & Supply Inc.
    Inventors: Daniel L. Baker, John E. Grant
  • Patent number: 6276169
    Abstract: Liquid CO2 is expanded in specially designed primary and secondary nozzles to produce frozen solid CO2. The impurities initially contained in the liquid CO2 are trapped inside of the frozen CO2, which is collected in a clean container. The container is emptied on top of a high purity surface. The impurities are concentrated on the surface, since these impurities are non-volatile and do not escape with the CO2 gas formed as the frozen CO2 is heated by the ambient temperature to its sublimation point. After all of the frozen CO2 has sublimed, the surface can be analysed by standard analysis methods to determine quantity and composition of the impurities. The determination and quantification of non-volatile impurities, such as organic oils and greases, in the CO2 supply that feeds, for example, cleaning systems utilizing CO2, is thus made possible.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: August 21, 2001
    Assignee: Eco-Snow Systems, Inc.
    Inventors: Charles W. Bowers, Wilfried Krone-Schmidt
  • Patent number: 6274988
    Abstract: An apparatus for starting and operating UV lamps, comprises an AC line powered circuit and a UV lamp. The circuit has a variable frequency AC source, providing AC current to the UV lamp and a ballasting inductor, connected in series with the UV lamp. The inductor and the lamp form a nonresonant coupling sub-circuit where a flow of current from the AC source through the UV lamp is limited by the ballasting inductor. The circuit does not develop dangerously high output voltages if the UV lamp is disconnected or burnt out, as would be the case with resonant output circuits, unless additional circuit protection was implemented. The impedance of the ballast inductor varies with the current frequency, enabling it to act as a current control element with changes in the output frequency. An open loop control circuit of the present invention maintains the lamp current at a relatively constant level without the complexity imposed by closed loop current control methods.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: August 14, 2001
    Assignee: R-Can Environmental Inc.
    Inventor: Pieter De Vries
  • Patent number: 6268446
    Abstract: A new class of initiators for inducing the cationic polymerization of olefins was discovered. These initiators, in conjunction with Lewis acids as coinitiators, effectively initiate the carbocationic polymerization of olefins. The new initiators are epoxides with the general formula where R1, R2 and R3 are hydrogen, alkyl, aryl or aralkyl groups, and can be the same or different, and i is a positive whole number. The Lewis acid has the general formula of MtXn, where M is titanium, aluminum, boron or tin, X is a halogen, an alkyl or an alcoxy or a mixture thereof. The process is a carbocationic process, which can be living or non-living, at a temperature of from about 0 to −80 C. The polymer produced can be a homo- or copolymer (random or block) carrying hydroxy functional groups.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: July 31, 2001
    Assignee: The University of Western Ontario
    Inventor: Judit E. Puskas
  • Patent number: 6244355
    Abstract: An isolation mount having a first mounting surface arranged on a vehicle. The first surface has substantially vertical first mounting lugs arranged at a lower end of the first surface, and a first fastening device for holding at least one pair of resilient device. The resilient devices comprise first resilient portions and second resilient portions. The first fastening device is preferably arranged at a top end of the first surface. The isolation mount further has a pivoting device, which has a first side facing the first surface, a second side facing away from the first surface and substantially vertical second mounting lugs arranged at a lower end of the first side of the pivoting device. The second mounting lugs are attachable to the first mounting lugs via pins to form a first hinge, about which the pivoting device is pivotable. The pivoting device further has resilient device holding device arranged at a top end of the pivoting device.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: June 12, 2001
    Inventor: Ronald H. Hall
  • Patent number: 6241092
    Abstract: A security mechanism adapted to a tool holder comprising a first member and a second member pivotally connected to the first, each of the members having a recessed portion defined on a mating surface to receive a portion of a tool shaft whereby a handle portion and/or other part of the secured tool is positioned outside of the security mechanism and the holder and is accessible to a user. The shaft security mechanism includes, preferably, a variable position locking means for securing the first and second members in the closed position in one of a number of locking positions. Preferably, a compressible insert slidably mountable onto the tool shaft portion may be inserted and registered into a cavity further defined by the recessed portions of the first and second members when the security mechanism is in an open position.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: June 5, 2001
    Assignee: Maxtech Manufacturing Inc.
    Inventor: Kailash C. Vasudeva
  • Patent number: 6233893
    Abstract: A substantially rectangular reinforcement assembly for concrete castings, having a longitudinal axis and a transverse axis. The assembly comprises a frame, a first set of longitudinal runners, a second set of transverse runners, and a third set of transverse runners. Each individual runner has two short ends, and each short end has a frame holding means. The runners are arranged in a hatch pattern, where the longitudinal runners are arranged substantially perpendicular to the transverse runners. The frame comprises a first leg member, a second leg member, and a shoulder member. The first leg member has a plurality of through holes and the second leg member has a corresponding number of through holes, which are substantially concentric with the corresponding through holes of the first leg member.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 22, 2001
    Inventor: J. Harry Lewis
  • Patent number: 6212794
    Abstract: A method of assisting with fluidization of difficult-to-fluidize materials and to improve the quality of fluidization of particles in general. The use of either helium or hydrogen as a gaseous fluidization aid. The addition of hydrogen and/or helium to the fluidization agent or the substitution of part of the fluidizing gas by hydrogen or helium as a fluidization agent is disclosed. The advantageous and desirable effect is that the fluidization quality of the particles is significantly improved.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: April 10, 2001
    Assignee: The University of Western Ontario
    Inventors: Jingxu Zhu, John R. Grace, Shi-Yun Jiao
  • Patent number: 6215681
    Abstract: A multiple current path device, for carrying electric current to and conducting heat from an electronic circuit, comprising an optional heat sink, a plurality of conducting substrates forming several electrically insulated current conductors, a thermally conductive, electrically insulating first layer, bonding each conducting substrate and the heat sink, and a plurality of electronic or electric components bonded to the substrates.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: April 10, 2001
    Assignee: Agile Systems Inc.
    Inventors: Derek C. Schuurman, Robert G. Lankin, Richard J. Hellinga
  • Patent number: 6199872
    Abstract: A holder for holding a tool, having an elongated housing, including a longitudinal hole having a cross-section corresponding to the cross-section of a mounting portion of the tool bit. The housing further has at least one radial hole running from an outside surface of the connector to the longitudinal hole. The radial hole contains a substantially spherical locking means movably arranged in the radial hole. The means cooperates with a circumferential groove in the tool bit to lock the tool bit in place when the tool bit is fully inserted into the holder. A sleeve is arranged to reciprocally slide over the first connector between two end positions. The sleeve is biased towards the tool by a first biasing means, and the sleeve has a step arranged on the inside of the sleeve, which step blocks the locking means when a tool is fully inserted into the longitudinal hole. A plunger is arranged to reciprocally slide inside the longitudinal hole, being pressed by a second biasing means towards the tool.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: March 13, 2001
    Assignee: Maxtech Consumer Products, L.L.C.
    Inventor: Maz A. Hasan
  • Patent number: 6196106
    Abstract: The disc saw blade has a plurality of arcuate teeth detachably mounted in complementary-shaped arcuate sockets provided in a rim portion around the circumference thereof. Each tooth has a portion butting against a stop, such as a transverse tail stop surface defined by an inward projection of the socket. The configuration provides a small throw entry gap to reduce the likelihood of sticks being thrown. The teeth preferably are detachably mounted by virtue of a tight fit within the sockets, with no use of fasteners to absorb cutting forces. Keying elements such as a male portion of generally rectangular cross-section extending from the socket into a corresponding female portion in the tooth preferably are used to ensure proper alignment of each tooth relative to the plane of the disc saw blade. Preferably, the teeth and sockets are parts of concentric circles, the diameter of the teeth preferably being slightly larger than the diameter of the sockets, thereby producing a press fit.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: March 6, 2001
    Assignee: Tigercat Industries Inc.
    Inventors: John Kurelek, Duane Anthony Barlow, Leonard Cobb Cole, Andrew Robert Hoshel
  • Patent number: 6191507
    Abstract: The modular conveyor system comprises N interconnected track sections, forming a continuous track, wherein each track section features a plurality of individually controlled coils stretching along the length thereof. Plural pallets, each having thrust producing magnets, travel independently alone the track. The track also comprises multiple linear encoder readers spaced at fixed positions therealong, and each pallet includes a linear encoder strip having a length R greater than the spacing E between the readers. Track section controllers associate the encoder strips with only one reader at any time in order to resolve the position of the pallets based on the fixed position of the readers and the relative positions of the strips in relation thereto. The section controllers also regulate and commutate the coils of the corresponding track sections in order to independently control each pallet. Communication links interface adjacent section controllers situated in adjacent track sections.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: February 20, 2001
    Assignees: ATS Automation Tooling Systems Inc., Agile Systems Inc.
    Inventors: Kenneth Peltier, Robert Gordon Lankin, Wayne Michael Robinson, David Kyle MacKay, Jeffrey John Fortuna, Sajeev Madusuthanan, Scott Charles Lindsay, Michael A. Cybulski, Michael J. Hancock, Robert A. Holl, Donald J. Mowat
  • Patent number: 6183169
    Abstract: A dispensing apparatus for the dispensing of ultra-fine particles on a dry basis in a reproducible manner. The apparatus includes a first gas-solids suspension chamber having particle fluidization means adapted thereto, and a conduit adapted between the first gas-solids chamber and a second gas-solids chamber for communicating via at least one particle orifice particles between the chambers. A high velocity gas stream provides a pressure difference between the chambers whereby a low pressure zone is created within the conduit thereby drawing in particles from the first gas-solids suspension chamber into the second gas-solids suspension chamber via the conduit. The apparatus further includes a combination of a withdrawal feed and a solenoid valve to direct particles from the second gas-solids suspension chamber into a collection area.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: February 6, 2001
    Assignee: The University of Western Ontario
    Inventors: Jingxu Zhu, John R. Grace, Nazaneen Pourkavoos
  • Patent number: 6176420
    Abstract: The disposable cup has a bottom insert, and a substantially truncated conical body having an integral lid and a cup opening. The lid is movable between a raised position and a closed position, possibly via a semi-closed position. The lid has a free edge, with a liquid passage opening allowing liquid passage when the lid is in said closed position. The lid is foldably joined to the body along an arcuate first score line. The lid further has second score lines arranged at respective ends of the free edge, the second score lines connecting the free edge and the first score line so that, when the lid is pushed towards the cup opening, the lid flips into a position inside the cup opening, the movement of the lid being substantially aided by the folding of the lid along the second score lines.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: January 23, 2001
    Inventors: George E. Sarson, Daryl J. Howes-Jones, Gregory John Kleynhans
  • Patent number: 6173916
    Abstract: A CO2 jet spray nozzle comprising multiple nozzle orifices for use in producing CO2 jet spray. The nozzle comprises a body, an elongated nozzle tube extending from the body having an axial hole therein, and an orifice disk disposed at the base of the nozzle tube in the axial hole. The orifice disk contains a plurality of orifices disposed therein that form a critical orifice and that is an integral part of the nozzle. The orifices may be drilled by means of a laser beam or electron discharge machining through the orifice disk. The orifice disk and nozzle tube are typically welded together to prevent leakage. By fabricating different nozzles in which the orifice size, orifice geometry (round, oval, or elongated slit), total orifice area, nozzle diameter and nozzle length is varied within a well defined matrix, any intensity of CO2 jet spray may be obtained. By varying the arrangement of the orifices, nozzle geometry, and nozzle length, different spray patterns may be provided.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 16, 2001
    Assignee: Eco-Snow Systems, Inc.
    Inventor: Wilfried Krone-Schmidt
  • Patent number: 6170444
    Abstract: The air and exhaust gas management (scavenging) system for a two-cycle internal combustion engine allows the engine to perform comparably to similar four-cycle engines, while remaining lighter, simpler and more cost-effective than its four-cycle counterpart. Scavenging is achieved by locating at least one and preferably a number of air intake valves (1) at the top of the cylinder(s) (2), and at least one and preferably a number of exhaust gas ports (51) in the lower cylinder walls, in combination with a blower (4) which drives scavenging air through the cylinder(s) during the piston downstroke once the exhaust gas ports are uncovered.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: January 9, 2001
    Inventor: Hans-Armin Ohlmann