Patents Represented by Law Firm Bosworth, Sessions & McCoy
  • Patent number: 4085589
    Abstract: An economical gas powered starting system is provided for relatively small, consumer operated implements powered by two or four cycle internal combustion engines. A low cost, radial piston starter motor is coupled to a liquified gas energy cell by a metering arrangement which charges a predetermined amount of gas to the motor, just sufficient to start the engine in its operating environment. The system and motor design disclosed develops torque-speed-time characteristics insuring excellent starter reliability.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: April 25, 1978
    Assignee: Midland-Ross Corporation
    Inventor: John H. Breisch
  • Patent number: 4083944
    Abstract: A continuous process is disclosed for removing sulfur dioxide from stack gases or other gaseous effluents without prior gas cleaning or dust removal and for converting the sulfur values to industrially useable elemental sulfur. The uncleaned gaseous effluent is scrubbed using a buffered absorbent to absorb the SO.sub.2 and remove particulate material, and the undissolved particulate material is removed from the scrubbing liquor as by filtration. The scrubbing liquor is then contacted with sulfide ion to form elemental sulfur while regenerating the absorbent in the liquor. Most of the liquor is separated from the precipitated sulfur and solid impurities, and the remaining material is heated to permit gravity separation of molten sulfur, scrubbing liquor and impurities. The separated scrubbing liquor is recycled for the scrubbing steps.The process is particularly advantageous when employing a sulfide ion source, such as sodium bisulfide or the like, to precipitate elemental sulfur.
    Type: Grant
    Filed: December 17, 1976
    Date of Patent: April 11, 1978
    Assignee: Arthur G. McKee & Company
    Inventor: Franklin S. Chalmers
  • Patent number: 4080566
    Abstract: An electronic instrument module for detecting and measuring the forward and reflected RF voltage wave signals on a coaxial transmission line. The instrument is integral with a coaxial line section adapted to be electrically inserted in a tubular transmission line, the line section having an elongated conductive metal body with a central cylindrical opening with a coaxial center conductor therein electrically insulated from the metal body. The metal body also has a transverse opening communicating with the central cylindrical opening and adapted to receive an inductive pick-up coil mounted on the body for rotation in the opening about an axis normal to the axis of the line section. The pick-up coil is responsive to the voltage wave signal on the transmission line.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: March 21, 1978
    Assignee: Bird Electronic Corporation
    Inventor: Frank Howard Mecklenburg
  • Patent number: 4079921
    Abstract: Apparatus and process are disclosed whereby open coils having spaces between the convolutions may be treated in a longitudinally extending furnace by passage of treating gases between the convolutions of the coils, the coils being introduced at one end of the furnace, passed through the furnace while being treated, and removed from the other end of the furnace. Walking beam apparatus is disclosed having sealing means, disclosed as a trough and flange sealing means that prevents gas leakage between the lower portion of the walking beam apparatus and the atmosphere, so that a completely gas sealed enclosure may be provided above the walking beams. Transfer means are disclosed at the entrance and discharge ends of the furnace, for introducing coils into the furnace and removing them from the furnace through purge chambers. A coil support that travels with the coil through the furnace is disclosed. Processes are also disclosed for continuously treating open coils.
    Type: Grant
    Filed: June 18, 1976
    Date of Patent: March 21, 1978
    Assignee: Lee Wilson Engineering Company, Inc.
    Inventor: Ludwik Iszczukiewicz
  • Patent number: 4075554
    Abstract: A VSWR meter circuit using a variable RF attenuator for use in an electronic instrument for detecting and measuring the forward and reflected RF voltage wave signals on a coaxial transmission line. The instrument is integral with a coaxial line section adapted to be electrically inserted in a tubular transmission line, the line section having an outer conductor with a coaxial center conductor therein. An inductive pick-up coil is mounted in the field surrounding the center conductor for rotation about an axis normal to the axis of the line section and is responsive to the voltage wave signal on the transmission line. A D'Arsonval meter movement is connected to the pick-up coil through a meter circuit designed so that the meter provides an indication of the level of either the forward voltage wave signal or the reflected wave signal depending on the orientation of the inductive pick-up coil.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: February 21, 1978
    Assignee: Bird Electronic Corporation
    Inventor: Frank Howard Mecklenberg
  • Patent number: 4072489
    Abstract: A process is disclosed for making vitreous silica crucibles of exceptional high quality for use in the growing of a silicon crystal from molten silicon. The crucibles are formed from fine particles of high purity fused silica by slip casting or other suitable process, are dried and fired to provide a rigid porous body, and are thereafter sintered to a high density, preferably to the transparent state. The invention solves the problem of spalling, blistering and cracking during crystal growing and the resulting contamination of the molten silicon, which has long plagued the industry, by eliminating water from the fused silica particles before the porous body is sintered to the transparent state. Said body is thoroughly dried in a vacuum furnace at a high temperature and at a sub-atmospheric pressure low enough to remove the chemically bound water which cannot be removed by heat alone.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: February 7, 1978
    Assignee: Sherwood Refractories, Inc.
    Inventors: Ted A. Loxley, Walter G. Barber, Walter W. Combs, John M. Webb
  • Patent number: 4070619
    Abstract: A VSWR meter unit for detecting and measuring the forward and reflected RF voltage wave signals on a coaxial transmission line. The unit is adapted to be electrically inserted in a tubular or coaxial transmission line, having an outer conductor with a coaxial center conductor therein. A microstrip circuit board is provided within the meter unit and comprises a dielectric board with a ground plane conductor printed on one side and inserted across the outer conductor, and a specially designed conductive path printed on the other side and inserted across the inner conductor. Also printed on the other side of the microstrip board is an inductive sensing loop located within and concentric with a circular loop portion of the conductive path. The sensing loop is closely spaced to the loop portion of the conductive path so as to be responsive to the voltage wave signal on the transmission line. A D'Arsonval meter movement is connected to the conductive loop through a specially designed 180.degree.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: January 24, 1978
    Assignee: Bird Electronic Corporation
    Inventor: Ralph P. Trefney
  • Patent number: 4067452
    Abstract: Disclosed is charging means for a shaft furnace such as an oil shale retort or blast furnace comprising a stationary outer distributor member having a donwardly converging inner wall and a movable member having upwardly converging upper wall, which latter member is adapted to move in an upright path between positions below and above the bottom of the distributor. A plurality of port means are fixed in the top wall of the furnace above the distributor members, each port means having a gas sealing valve and a material holding gate. Above the port means is a distribution hopper having a number of downwardly extending legs each connected to one of the port means, and adapted to distribute to each of the port means charge material that is supplied to the top of the distribution hopper through a material holding gate and a gas seal. The distribution hopper is supported by load cells which measure the weight of the charge material delivered to the distribution hopper.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: January 10, 1978
    Assignee: Arthur G. McKee & Company
    Inventor: Andrejs Berzins
  • Patent number: 4064950
    Abstract: A hydraulic drilling machine for cutting into rock formations and the like. The machine has a rotating drill rod with a bit at one end and a rotary hydraulic drive motor at the other end. The drill rod is supported on a carriage adapted for linear travel to advance the rotating bit into the rock formation. The carriage is extended and retracted by means of a hydraulic feed motor. The rotary hydraulic motor and the hydraulic feed motor are connected in series in the hydraulic operating system so that when rotation resistance increases accompanied by a greater pressure drop across the rotary hydraulic motor, there is a consequent decrease in the force exerted by the hydraulic feed motor in order to avoid jamming of the drill bit.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: December 27, 1977
    Inventors: Pekka Salmi, Rolf Strom, Eero Hirvisaari
  • Patent number: 4059220
    Abstract: Reinforced single-face corrugated fiberboard containers of remarkable strength are disclosed which can be mass produced at minimum cost in a high-speed continuous process from a continuous sheet of single-face corrugated material comprising a corrugated web adhesively secured to a single facing sheet having a width much greater than that of the web to provide outwardly extending fly portions of substantial width. The web forms the corrugated core of a single-wall laminated board formed by turning over the fly portions to reinforce the side edges and adhesively securing the fly portions to the corrugations to partially cover the core and to provide the board with double-faced side portions and an unreinforced single-faced middle portion.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: November 22, 1977
    Assignee: MacMillan Bloedel Containers, Inc.
    Inventor: Achim R. Lorenz
  • Patent number: 4056644
    Abstract: A machine and method are disclosed which provide an efficient means for coating the annular surfaces on a plurality of workpieces. The workpieces are moved relative to a gun which sprays a coating material. As each workpiece passes within the spray, the gun moves alternately back-and-forth such that the center of the spray follows the curvature of the annular surface. Simultaneously, the workpiece rotates so that the entire surface is coated. The machine is provided with a camming mechanism for moving the gun, one motor for driving the camming mechanism, another motor for rotating the workpieces, and a series of belt and chain drives for synchronizing the motion of the gun with the movement of the workpieces.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: November 1, 1977
    Inventors: Alfred S. Howard, William Selesnick
  • Patent number: 4053275
    Abstract: A method and apparatus for making flexible rubber tubing with axially spaced annular or helical corrugations. A sleeve of uncured vulcanizable rubber is slipped over a forming mandrel and an external form comprising a length of flexible, corrugated, axially compressible rubber tubing is positioned over the sleeve. The interior wall of the external form defines a shaping surface for use in forming embryonic corrugations in the sleeve. The sleeve is radially expanded into the shaping surface and the form and sleeve are axially compressed concertina-fashion to increase the radial dimensions of bulged portions of the sleeve between the corrugations of the external form to make embryonic corrugations in the sleeve. The sleeve and external form are then removed from the forming mandrel and the sleeve is placed on a curing mandrel with the corrugations at desired spacings, after which the sleeve is cured.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: October 11, 1977
    Inventors: Vance M. Kramer, Sr., Vance M. Kramer, Jr.
  • Patent number: 4050840
    Abstract: A radially adjustable rotary cutting tool such as a rotary reamer or the like. The tool head has a generally cylindrical body with a shank at one end and a radially slotted cutting head at the other end. The cutting head has a central axially extending threaded bore adapted to receive a threaded expansion element that may be used to radially expand or enlarge the cutting head when turned into the bore. The cutting head has an inner core portion formed of a low to medium alloy carbon steel and an annular outer portion formed of a tool steel metallurgically bonded to the core portion to provide a unitary composite structure. The annular outer portion has a plurality of circumferentially spaced longitudinal flutes formed therein to define integral longitudinally extending radially adjustable cutting surfaces.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: September 27, 1977
    Assignee: Acme-Cleveland Corporation
    Inventor: Thomas Jerome Skingle
  • Patent number: 4050592
    Abstract: Apparatus for charging material into a shaft furnace, such as a blast furnace. The apparatus includes gas lock means for introducing charge material into the furnace while the furnace is under gas pressure, and distributor means below the gas lock means that causes charge material to be deposited and distributed in the upper portion or throat of the furnace either toward the outer periphery of the cross section in the furnace bounded by the interior surface of the furnace wall or toward the center of such cross section, or in both places, to provide an upper surface or stockline of charge material that is essentially level or of any other desired shape within substantial limits.
    Type: Grant
    Filed: July 1, 1976
    Date of Patent: September 27, 1977
    Assignee: Arthur G. McKee & Company
    Inventors: Melvin J. Greaves, Frank V. Razgaitis
  • Patent number: 4049030
    Abstract: A vent tube for a container filling machine in which the fill height is adjusted by the replacement of a removable lower tip. The vent tube has an upper tubular body with an interior axial passage through which gas is vented. The removable tip is attached to the body by insertion into a socket formed in the lower end of the passage. The tip is a tubular member with a wall surrounding an interior axial passage which communicates with the passage of the tube body. An opening is provided through the wall of the tip at the level of the predetermined fill height. Locking means are provided by which the tip is removably held within the socket of the tube body.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: September 20, 1977
    Assignee: Arthur Products Co.
    Inventor: Alfred A. Abramoska, Jr.
  • Patent number: 4045160
    Abstract: A fuel gas burner adapted for mounting in a heat treating furnace and for generating a relatively large expanse of radiant energy toward an object to be heated or heat treated. The burner has a housing with separate inlets for fuel gas and air and an air plenum with a forwardly facing throat. Surrounding the plenum throat is a combustion block formed of refractory material shaped to define a forwardly-facing frusto-conical heat radiating surface. A central fuel gas supply tube coaxial with the plenum throat has a nozzle element and a cooperating distributor mounted on its forward end to define with the plenum throat an annular air passage and a fuel gas chamber communicating with the supply tube. The nozzle element has radially extending circumferential vanes that define with the plenum throat, swirl producing slots adapted to receive air from the plenum chamber through the annular passage and fuel gas through ports communicating with the fuel gas chamber.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: August 30, 1977
    Assignee: Lee Wilson Engineering Company, Inc.
    Inventor: Norman C. Michels
  • Patent number: 4043453
    Abstract: A holder and display unit for a socket of the type used in a socket wrench tool, including a fastening device for anchoring the socket to the display unit. The socket has a square recess for the male stud on the wrench drive component and the recess has a transverse detent hole in its sidewall of the type that cooperates with a detent ball or the like on the drive stud to retain the socket on the drive component. The fastening device has a head and a male plug portion that extends through an aperture in the display unit and into the square recess in the socket. A resilient arm on the male plug portion has a catch that registers with and snaps into the transverse detent hole. This releasably latches the fastening device, display unit and socket together.
    Type: Grant
    Filed: May 11, 1976
    Date of Patent: August 23, 1977
    Assignee: The Wright Tool & Forge Company
    Inventor: Hugh T. Greenlee
  • Patent number: 4036769
    Abstract: A liquid lubricant comprising a blend from about 50 per cent to about 90 per cent by weight of an ester of a monohydric alcohol having from about 10 to about 18 carbon atoms and a monocarboxylic acid having 12 to 24 carbon atoms, and from about 10 per cent to about 50 per cent by weight of a fat liquid at room temperatures, such as fish oil. One or more of the monohydric alcohol, monocarboxylic acid, and liquid fat have sufficient carbon-to-carbon unsaturation to impart to the blend an iodine number up to about 140. The lubricant has a balance of properties adapting it to be used as a substitute for sperm oil, for example, a pour point below 50.degree. F. and a S.U.S. viscosity at 100.degree. F. within the range of about 60 to about 120. The blend may be used as such or chemically combined with sulfur, chlorine or other halogens, phosphorous, and the like.
    Type: Grant
    Filed: April 5, 1971
    Date of Patent: July 19, 1977
    Assignee: Werner G. Smith, Inc.
    Inventor: Robert L. Zipf
  • Patent number: 4035612
    Abstract: A circuit for detecting trouble in a sliding contact mechanism comprising a fixed contact portion and a movable contact portion, said fixed portion being connected to an electric power source.A radio-frequency signal is generated when insufficient electrical connection is caused in the sliding contact mechanism by, for example, depositing dusts thereon, said signal being delivered to a suitable alarm device to indicate the troublesome state.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: July 12, 1977
    Assignee: Kabushiki Kaisha KIP
    Inventors: Tutomu Ishiguro, Yukio Katano
  • Patent number: RE29626
    Abstract: A progressing cavity, positive displacement rotary pump assembly for fluid or semi-fluid material. The assembly includes a rotary shaft with an associated drive motor and pump components including a tubular stator with an interior helical surface and an orbital rotor within the stator operably connected to the shaft and having an exterior helical surface. The helical rotor surface has one more thread than the helical stator surface which it engages, to define sealed pumping cavities that advance axially as the rotor rotates and orbits within the stator. The rotor is coupled to the shaft by a flexible torque tube with one end connected to the shaft and the other connected to an end of the rotor to transmit driving torque to the rotor and to flex sufficiently to accommodate orbital movement of the rotor.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: May 9, 1978
    Inventor: Clifford H. Allen