Patents Represented by Attorney, Agent or Law Firm G. Kendall Parmelee
  • Patent number: 6612396
    Abstract: Controlled-polarization marine seismic shear-wave source has a base suitable for positioning on a seafloor, beneath a water body. Twin water-blast tubes (seismic-impulse-generation thrusters) are mounted on the base, aimed upwardly, outwardly in opposite directions at equal acute angles &bgr; relative to the base. These blast tubes are positioned symmetrically on opposite sides of vertical centerline CL of the source. When submerged, water enters open mouths at upper ends of the tubes. The base has multiple downwardly projecting blade-like teeth for penetrating into the seafloor. Firing a compressed-air discharger mounted in a lower end of a water-blast tube hurls a powerful slug of water upwardly along the tube, producing a powerful reaction impulse acting downwardly generally parallel with the tube axis.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: September 2, 2003
    Assignee: Bolt Technology Corporation
    Inventors: Paul Chelminski, Rodney A. E. Humphreys
  • Patent number: 6464035
    Abstract: Streamlined, towable, marine seismic energy vibrator for creating intense swept-frequency and pulse-coded seismic signals in a body of water has a sleek, fish-like configuration designed for towing with minimum drag. The vibrator has a streamlined hollow towing head and a streamlined hollow tail head mounted onto front and rear of a long cylindrical tubular wall which is modular, comprising cylinder sections joined in end-to-end axial alignment. Within this long tubular cylinder wall is an axially vibratable multi-piston assembly having a plurality of pistons on a long piston rod. One piston is positioned in each of the cylinder chambers. These chambers hive multiple ports opening out through the long cylindrical wall. An elongated circular cylindrical elastomeric bladder forms a water-filled bladder chamber encircling the wall.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: October 15, 2002
    Assignee: Bolt Technology Corporation
    Inventor: Stephen Chelminski
  • Patent number: 6386267
    Abstract: A non-rotating, belt-levitating, cylindrical air-pillow apparatus supports and guides a moving, tensed, flexible, heat-conductive casting belt along a convex, cylindrically shaped path toward an entrance into a continuous casting machine. Pressurized air is applied in belt-levitating relation to the inner surface of the casting belt moving along the path. Stationary belt-guiding elements define the path. Pressurized air is fed through throttling passages communicating with regions between stationary elements or communicating with outwardly facing stationary plateau surfaces. A cylinder shell supports the stationary elements and is adjacent to a plenum chamber feeding pressurized air through throttling passages in the shell. Stationary elements of suitable, durable, wear-resistant, slippery material are mounted in grooves in the shell. The air-pillow apparatus includes belt coolant application deflector or nozzles.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: May 14, 2002
    Assignee: Hazelett Strip-Casting Corporation
    Inventor: Valery G. Kagan
  • Patent number: 6386270
    Abstract: Method, system and apparatus for controllably heating copper alloy dam blocks in revolving edge dam chains in twinbelt continuous casters by induction heating of thermally-sprayed ferromagnetic layers bonded in shallow depressions in such blocks. High thermal conductivity of such blocks advantageously quickly conducts inductive heat from ferromagnetic layers into the blocks. For casting a slab of electrolytic anodes having aligned opposed protruding lugs, such chains include uniformly spaced lug-molding pocket blocks. Periodic induction heating of ferromagnetic layers on dam blocks of one chain or the other keeps pocket blocks aligned as revolving chains travel downstream along opposite sides of moving mold casting regions. Directly induction heating copper alloy dam blocks is very impractical. Therefore, ferromagnetic layers are thermally sprayed into depressions in blocks prior to assembling such chains.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: May 14, 2002
    Assignee: Hazelett Strip-Casting Corporation
    Inventors: Nedeltcho P. Kandev, Jerome B. Allyn, Dean A. Boozan
  • Patent number: 6378743
    Abstract: Apparatus, system and method precisely, quickly control flow of molten metal to metal-casting apparatus by pumping, braking or throttling. The Faraday-Ampère principle of current flow in a unidirectional magnetic field is employed. Permanent magnets comprising neodymium or similar high-energy, rare-earth materials provide “reach-out” magnetism. These neo-magnets, usually shown as cubes, are arranged in various powerful configurations driving intense unidirectional magnetic field B across a non-magnetic gap many times larger than economically feasible otherwise. This gap accommodates a conduit for pressurizing and moving a flow of molten metal. In making multiple identical castings, a controlled, intermittent, predetermined flow of molten metal is fed to a series of identical individual molds. The invention obviates needs for operating metallurgical valves or expensive tilting mechanisms for metallurgical furnaces.
    Type: Grant
    Filed: January 15, 2000
    Date of Patent: April 30, 2002
    Assignee: Hazelett Strip-Casting Corporation
    Inventor: Valery G. Kagan
  • Patent number: 6169406
    Abstract: Very low frequency (VLF) high voltage (HV) sinusoidal electrical test waves provide for testing AC electrical power installations and equipment having large electrical capacitances. VLF HV sinusoidal electrical waves are suitable for testing characteristics and/or qualities of insulation on long, buried electric power cables. Capacitance of a load being tested by VLF HV sinusoidal waves is discharged during a second half of each positive half-wave and during a second half of each negative half-wave by using a sequence of resistive discharge paths. Each successive discharge path in a sequence has less resistance than its predecessor for creating a sequence of progressively-reduced discharge Time Constants. Solenoid-operated switch contacts bring successive discharge paths into action. Also, solenoid-operated switch contacts reverse polarity to create positive and negative half waves of the VLF HV sinusoidal electrical test waves.
    Type: Grant
    Filed: May 2, 1998
    Date of Patent: January 2, 2001
    Inventor: Stanley G. Peschel
  • Patent number: 6026759
    Abstract: Method and apparatus for leveling or adjusting a power-boat's average angle of bank or list about its roll axis RA regardless of side wind or off-center loading to improve passenger comfort, increase fuel efficiency, and smooth hull passage through waves with reduced pounding. Improved operating characteristics are accomplished by adjusting steering force angle-of-attack of a small fin-rudder mounted under a forward portion of the boat's keel. The boat's heading is maintained by applying an opposite steering force by altering thrust direction of the driving and steering mechanism. Altering thrust direction occurs either by a pilot steering the helm or automatically by adjusting thrust direction independently of pilot steering. In an optional automatic mode, an electronic gravity inclinometer adjusts a fin-rudder servo. An electronic filter processes the inclinometer signal to control the boat's average attitude around its roll axis RA.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: February 22, 2000
    Assignee: Hazelett Strip-Casting Corporation
    Inventors: R. William Hazelett, Jeffrey Paul Lefebvre, Timothy D. Kaiser
  • Patent number: 5967223
    Abstract: Permanent-magnetic hydrodynamic methods and apparatus stabilize a moving, flexible, thin-gauge, heat-conducting, magnetically soft ferromagnetic casting belt against thermal distortion while moving along a mold cavity being heated at its front surface by heat coming from molten metal being cast while being cooled at its reverse surface by flowing pumped liquid coolant. Hydro-magnetic devices are arranged in an array wherein flows of pumped coolant pass through fixedly throttling passageways feeding pressure pockets facing the belt's reverse surface. These pockets are shown rimmed by magnetic pole faces. Coolant issues from the pressure pockets as fast-moving films radiating therefrom and travelling in gaps between the belt's reverse surface and the pole faces.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: October 19, 1999
    Assignee: Hazelett Strip-Casting Corporation
    Inventors: Valery G. Kagan, R. William Hazelett
  • Patent number: 5964276
    Abstract: Edge-dam blocks assembled with their upstream faces in keyed mating interengagement with downstream faces of adjacent blocks form an endless edge dam revolvable in a preselected path for defining a boundary of a moving-mold casting region. The edge dam keeps molten metal in the casting region. Upstream and downstream faces of adjacent blocks have mutually complementary shapes for minimizing intrusion of molten metal between abutting blocks. Keying engagement between abutting blocks prevents relative translational slippage of blocks toward or away from molten metal. An abuttable face on each block has at least one protrusion such as an integral elongated key extending perpendicularly to a casting belt associated with the casting region, or the protrusion includes two round pins having projecting tapered ends. Another abuttable face has a recess such as a keyway for snugly receiving a key on an adjacent block or has two tapered recesses for snugly receiving two tapered projections of an adjacent block.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: October 12, 1999
    Assignee: Hazelett Strip-Casting Corporation
    Inventors: John Dompas, Stanley E. Aylward, R. William Hazelett
  • Patent number: 5844402
    Abstract: An in-line buck/boost voltage/regulating apparatus and system for delivering AC electrical power of regulated voltage from an output terminal of a main winding to an electrical load. The apparatus has an input terminal for connection to an AC power supply and comprises first, second and third ferromagnetic transformer cores having first, second and third cross-sectional areas, respectively; and these cross-sectional areas have relative sizes of X square units, Y square units and Z square units, respectively. There are first, second and third regulator windings respectively mounted on the first, second and third cores, and electromagnetically coupled with their respective cores. The first, second and third windings have first, second and third numbers of turns, respectively. Switching elements selectively connect the first, second and/or third windings across the AC supply and selectively short-circuit any of the first, second and/or third windings which are not connected across the AC supply.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: December 1, 1998
    Assignee: Hubbell Incorporated
    Inventors: Stanley G. Peschel, Arthur Molden, Oscar Tonello
  • Patent number: 5804136
    Abstract: A radial-flow, wide-pouring molten-metal distributor comprising a curved or arcuate overflow weir which is normally horizontal on its top and which is concave on its upstream side as viewed from above. Over this arc-shaped overflow weir flows molten metal to be continuously cast in an open pool. An impetus is thereby imparted to the molten metal along diverging radial lines. The flow so impelled continues radially onto a horizontal apron. The flow spreads fanwise to the desired width which may be as much as six times the width of the weir. Thence, the metal cascades or flows uniformly into the casting apparatus. The overflow weir is preferably supplemented by a skimmer mounted above it in substantially uniform spaced aligned relationship, thereby completing a slot beneath the skimmer through which the molten metal flows. When employed for the casting of wide, thin product, the invention results in a far more uniform and gentle distribution of metal than heretofore available.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: September 8, 1998
    Assignee: Hazelett Strip-Casting Corporation
    Inventor: Valery G. Kagan
  • Patent number: 5737900
    Abstract: Banding apparatus in various embodiments include accelerator members for accelerating plastic bands downstream along a floating mandrel for propelling them at high speed with significant kinetic energy in being ejected off from an end of the mandrel toward and around articles to be banded. In one apparatus belts accelerate elongated label bands to more than 1,000 feet per minute. The peripheries of tear-off rollers turn continuously at a first speed for tearing successive bands off from perforated plastic tubing which may be pre-perforated label tubing. Alternatively, plastic tubing may be perforated during operation by continuously feeding flattened tubing between perforator and anvil rollers positioned upstream from the mandrel. Accelerator members shown as rollers or as revolving belts have repetitive first and second peripheral speeds alternating with each other in cycles.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: April 14, 1998
    Assignee: PDC International Corporation
    Inventors: Anatole E. Konstantin, Jaroslaw T. Malkowski
  • Patent number: 5728036
    Abstract: Elongated finned backup rollers have multiple magnetized fins for rolling contact with a moving endless, flexible, thin-gauge, heat-conducting, magnetically soft ferromagnetic casting belt for guiding and stabilizing the belt against thermal distortion while it moves along the mold cavity being heated at its front surface by heat from molten metal while being cooled at its reverse surface by flowing liquid coolant. Each finned backup roller includes an elongated, non-magnetic shaft rotatable around its axis and having multiple annular fins of magnetically soft ferromagnetic material fitted onto the shaft spaced along the shaft. The fins have circular perimeter rims for rolling contact with the reverse surface of a belt. Intervening collar shaped reach-out permanent magnets are mounted on the shaft between successive fins. The fins and reach-out collar magnets alternate in sequence along the length of the roller. The reach-out collar magnets are magnetized in a direction parallel with the axis of the roller.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: March 17, 1998
    Assignee: Hazelett Strip-Casting Corporation
    Inventors: Valery G. Kagan, R. William Hazelett
  • Patent number: 5671483
    Abstract: A face shield for a helmet comprises a body with an opening, an inner lens mounted in the body opening and a weather lens releasably mountable over the inner lens. The weather lens has a gasket around its perimeter which spaces the weather lens from the inner lens to form an insulating air gap between the inner lens and the weather lens. The weather lens is made of translucent material to selectively filter the light passing through the lens. The inner lens is recessed in the body so that the weather lens is generally flush with the outer surface of the body. Each side edge of the weather lens is provided with one of a hook and loop fastener and the inner lens has the complimentary fastener portion for mounting the weather lens to the inner lens.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 30, 1997
    Assignee: Ontario Limited
    Inventor: Douglas Alvin Reuber
  • Patent number: 5639063
    Abstract: A trouble-shooting shut-off valve includes an inlet-tail-tube mountable directly into a compression-fitting outlet socket of a defective shut-off valve, thus positioning the trouble-shooting valve immediately downstream from the defective valve in line in series with the defective valve. An inlet-tail-tube fitting is mounted onto an upstream end of the valve housing as a component of the valve. This fitting has an axial bore forming an upstream extension of an inlet passage in the valve housing. The inlet-tail-tube projects axially from this fitting adapted for insertion directly into such a socket in the defective valve. The inlet-tail-tube has a diameter equal to the outside diameter of flexible plumbing tubing, referred to as flex tube, and is formed of material suitable for making a compression connection thereto. An inlet end termination of the inlet-tail-tube is flat for seating down squarely into the outlet socket of the defective valve.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: June 17, 1997
    Inventor: Paul J. Barker
  • Patent number: 5500953
    Abstract: Known protective helmets used for motorcycle riding, flying and snowmobiling employ transparent visors that have heating elements to reduce and attempt to eliminate the build-up of ice, condensation and fog. A double-lensed face shield is provided with a pair of electrodes formed on an inner face lens, in the air pocket formed between the inner face lens and the outer weather lens. Substantially across one entire surface of the inner face lens is formed an electroconductive film. An upper electrode extends from a first end along an upper margin of the inner face lens on the film to a second end. On the opposite lower margin extends on the film a lower electrode from a first end to a second end. An insulated contact passes from one side of the inner lens to the other and connects the first end of the lower electrode with a conductor which extends on the opposite side of the inner lens towards the first end of the upper electrode.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: March 26, 1996
    Assignee: 546401 Ontario Limited
    Inventors: Douglas A. Reuber, Amsey Buehler
  • Patent number: 5487602
    Abstract: Multi-screw, extrusion-compounding machines having co-rotating screw assemblies incorporating sets of modular mixing elements of non-symmetrical geometries with relatively large wing tip clearances. These sets of non-symmetrical modular mixing elements are removably mountable at any suitable axial locations along their respective rotationally-driven screw shafts for optimizing performance in relationship to particular plastic material and particular additives being compounded. The non-symmetrical geometries provide dynamic wedging pressurization for repeatedly propelling relatively large circumferential flows of the plastic material through large shear clearances. Due to the relatively large shear clearances, the plastic material is mixed at less elevated and more uniform temperatures than usually occurs with use of prior symmetrical kneading blocks or kneading discs. At less elevated temperatures most plastic materials exhibit increased viscosities.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: January 30, 1996
    Assignee: Farrel Corporation
    Inventors: Lefteris N. Valsamis, Eduardo L. Canedo, Jose M. Pereira, Douglas V. Poscich
  • Patent number: D365869
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: January 2, 1996
    Inventor: Augustus W. Merwin
  • Patent number: D370310
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: May 28, 1996
    Assignee: 546401 Ontario Limited
    Inventors: Douglas A. Reuber, Amsey Buehler
  • Patent number: D380873
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 8, 1997
    Assignee: Douglas Alvin Reuber
    Inventor: Douglas A. Reuber