Patents Examined by Bernard Nozick
  • Patent number: 5161910
    Abstract: A pavement grinder for grinding and grooving pavement surfaces has a grinding carriage with a rotating arbor supporting a number of radial blades. The arbor is directly coupled to shafts of hydraulic motors with an adaptor between the arbor shaft and the motor shaft. Debris from grinding is removed by a removal system using suction. Suction bars extend behind and to the sides of the arbor and a shroud is positioned in front of the arbor. The debris is suctioned to a separation tank which directs the debris downward away from the vacuum force. Gravity and the downward momentum of the debris is greater than the vacuum force, so the debris is separated from the air flow. The debris is directed to the bottom of the tank and enters a slurry which is pumped for disposal.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: November 10, 1992
    Assignee: Diamond Surface, Inc.
    Inventor: Dusten C. O'Konek
  • Patent number: 5162301
    Abstract: The invention relates to a new method for the separation of gaseous paramagnetic species from diamagnetic or weakly paramagnetic gaseous species by contacting the mixture of such species with a high Tc superconductive material in permeable form, so that one of the species is enriched respective of the other one by permeation through such porous barrier.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: November 10, 1992
    Assignee: Yeda Research and Development Co., Ltd.
    Inventors: Shymon Reich, Israel Cabasso
  • Patent number: 5160519
    Abstract: A filter device, especially an intake air filter for internal combustion engines, comprises a cylindrical filter housing (1) with inlet and outlet openings (7, 6) for the medium. In the outlet opening (6), a pipe stub (11) is fixed with the aid of an elastic sleeve (12), which forms a seal between the opening edge (14) and the stub and between the stub and an intake conduit (15) coupled thereto. The pipe stub has a portion (11a) extending into the filter housing, against which portion (11a) there seals a radial seal (17) on a filter element (2) enclosed in the housing.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: November 3, 1992
    Assignee: AB Volvo
    Inventors: Per Svensson, Sten Klippare
  • Patent number: 5160515
    Abstract: A rail car unloading aspiration unit includes a rail car nozzle for providing air conduits for feeding conditioned air to the rail car and for withdrawing air therefrom, ambient air being drawn between a weather shield, hood or cover and a fan chamber mounted on a heating chamber which forces ambient air to pass through a filter and be heated within the range of approximately 77.degree. F.-95.degree. F. The heated air is passed in proximity to ultra violet lamps after which the air is directed into the rail car nozzle and expelled into the interior of the rail car head surface above the product being unloaded. During the time that power is applied to the aspiration unit, the fan forces air to be drawn into the unit and conditioned, and the ultra violet lamps remain on. However, the heaters are selectively activated or deactivated as a function of the temperature of the incoming air in order to maintain the temperature of the air within the desired ranged prior to being exposed to the ultra violet lamps.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: November 3, 1992
    Assignee: CPC International Inc.
    Inventors: John L. Nelson, David Houldey
  • Patent number: 5160510
    Abstract: A process and apparatus are used for purifying dust- and pollutant-containing exhaust gases, which are first subjected in a first stage to a dry purification in a mass separator and are subsequently subjected in a second stage to an electrostatic purification in an electrostatic precipitator. In the second stage the exhaust gases are passed through one or more fields provided with liquid-wetted collecting electrodes, which define gas passages. The electrostatic precipitator also has an overflow trough and a collecting trough for each collecting electrode. Liquid supplied to the overflow trough flows onto the collecting electrode and then is collected in the collecting trough.
    Type: Grant
    Filed: March 31, 1991
    Date of Patent: November 3, 1992
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Karl Steinbacher, Hermann Schmidt, Wilhelm Leussler
  • Patent number: 5160443
    Abstract: An apparatus and method is disclosed for recycling contaminated industrial liquids. In the preferred embodiment, a conventional, medium-sized "van" type of truck houses, transports and powers a dual-loop assembly. A filter-loop assembly receives and stores recycling liquid in a waste liquid holding tank. The liquid is pumped through a pasteurizing heater and a separating centrifuge and back to the tank. Filter-test valves in the filter-loop enable testing to determine desired heating and separation.When flow-rate adjustments produce satisfactory heating and separation, the recycling liquid is directed through a cooler, out of the filter-loop and into an additive-loop assembly where the liquid is pumped from a clean liquid holding tank, by additive compound injections, and back to the clean tank. Additive-test valves in the additive-loop enable testing to determine required quantities of specific additive compounds.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: November 3, 1992
    Assignee: Butler Associates
    Inventor: John S. Mesheau
  • Patent number: 5160517
    Abstract: A system for indoor pollution control that purifies ambient air in a room. The air-purification components can be housed, for example, in an item of ordinary furniture such as a chair. This allows large components capable of high purification rates to be used, but without the large space requirements hitherto normally required with previously known high-rate systems. In addition, the air flow is directed so that a localized spatial zone can be preferentially purified without the need for physical enclosures. The system can be used to prevent dispersion of harmful substances such as pathogens or tobacco smoke that originate from a source, and can also create a microenvironment of purified air.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: November 3, 1992
    Inventors: Richard E. Hicks, Richard R. Fenner
  • Patent number: 5158585
    Abstract: A compressor unit in which the oil separated by a plurality of oil separators to a gas suction side pipe of the previous stage oil separator which contains gas whose oil concentration is higher than that of the gas from which oil has been separated, with the separated oil being returned to a compressor. The plurality of separators enables a simplification of the arrangement of the oil returning pipe, a prevention in a reduction in the discharge flow rate of the compressor, and reduction in space required for the separators.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: October 27, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Norihide Saho, Takeo Nemoto, Shintaro Sado, Sachihiro Yoshimatsu, Tadashi Takada, Susumu Harada
  • Patent number: 5158580
    Abstract: A method and apparatus for efficient removal of particulates from a gas is described which incorporates a barrier filter (e.g. baghouse) internally of an electrostatic precipitator. An alternative embodiment is disclosed which incorporates an electrostatic precipitator and a barrier filter (i.e. baghouse) in series, with a pre-charger interposed therebetween. The series arrangement enables the barrier filter to operate at significantly higher filtration velocities than normal 4.06-20.32 cm/s (8-40 ft/min) versus 0.76-2.54 cm/s (1.5-5 ft/min) and reduces the size of the barrier filter significantly. The precharger adds an additional electrostatic charge to particulates exhausted from the electrostatic precipitator and replaces charge lost in lengthy and poorly insulated conduits.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: October 27, 1992
    Assignee: Electric Power Research Institute
    Inventor: Ramsay Chang
  • Patent number: 5156660
    Abstract: A filter cleaning apparatus for cleaning air filters such as the air filter on the Abrams M-1 tank, which apparatus includes a cabinet fitted with an air exhaust system, brackets for receiving one or more air filters and an air supply manifold, air inlet manifold and sweep manifold for directing streams of air on the inside and outside element surfaces of the filter or filters and removing dust and dirt lodged in the filter elements. In a preferred embodiment a vibrating mechanism is built into the floor of the apparatus for vibrating the filters while simultaneously directing the streams of air on the inside and outside filter element surfaces and evacuating the dislodged dust and dirt particles from the cabinet.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: October 20, 1992
    Inventor: James H. Wilson
  • Patent number: 5156659
    Abstract: An off-gas stack for a melter comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound angle, having both downward and tangential components, to create a reverse vortex flow, counter to the direction of flow of gas through the stack and also along the periphery of the stack interior surface. Air from the first set of holes pervents recirculation zones from forming and the attendant accumulation of particulate deposits on the wall of the stack and will also return to the plenum any particulate swept up in the gas entering the stack. The second set of holes injects air in the same direction as the gas in the stack to compensate for the pressure drop and to prevent the concentration of condensate in the stack.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 20, 1992
    Inventor: George T. Wright
  • Patent number: 5156819
    Abstract: A steam scrubber system passes an exhaust gas to be cleaned into a steam scrubber chamber having substantially saturated steam therein. The substantially saturated steam particles have strong negative charges which attract positively charged particles to be extracted from the exhaust gas causing such particle to agglomerate and fall from the exhaust gas-steam mixture. Where it is desired to add a treatment chemical to the steam, a liquid containing the treatment chemical is atomized in the chamber. In a preferred embodiment, some of the inflow of steam is directed toward an impingement plate against which a jet of a liquid carrying a treatment chemical is directed for atomization and mixing with the steam. The treatment chemical is one, such as lime, slaked or unslaked, which would be ineffective if mixed directly with the steam. The resulting mixture may be passed into a cooling and demisting chamber before release to the atmosphere.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: October 20, 1992
    Inventor: Jody D. Ross
  • Patent number: 5154743
    Abstract: A grease extractor includes a fan for forcibly flowing grease laden air to remove grease therefrom in cooperation with a membrane filter and a trap member. The grease extractor comprises a vessel with an inlet for introduction of the grease laden air and an outlet for discharging clear air removed of the grease. The membrane filter is disposed in a flow path between an inlet and an outlet of the extractor to seize the grease while passing the grease laden air therethrough. A trap member is disposed downstream of the membrane filter to deflect the air to cause collision of the grease laden air against the trap member to deposit the grease thereon. The trap member is formed with a recovery line for collecting and draining the deposit grease out of the vessel.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: October 13, 1992
    Assignee: Kuraco Limited
    Inventors: Takashi Takato, Toshihiro Higashino
  • Patent number: 5154742
    Abstract: An air cleaner for removing air entrained cooling oil mist, smoke and particulates which become air borne during machine tool cutting operations and the like thereby contaminating ambient air adjacent the machining and the like operations.The contaminated air is driven against a planar impingement plate arranged to be struck with a glancing blow of such force as to remove a substantial portion of the contaminates by impact.A series of cylindrical openings extend transversely through the impingement plate. The openings are sufficient in number to ensure continued flow through the cleaner. The plate is arranged at such an angle with respect to the air flow directed toward the plate that the openings appear to be elliptical to the air stream when the air first strikes the plate, thus effectively increasing the impingement surface area, but at the same time an adequate number of openings is provided through the impingement plate to maintained the desired air flow.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: October 13, 1992
    Inventors: William J. Gault, Donald E. Gault, Frederick E. Marshall
  • Patent number: 5154741
    Abstract: A deep-water oil and gas production and transportation system including a wet Christmas tree, a 2-phase oil/gas vertical separator, a gas cooler, a vertical tubular scrubber and a motor-pump, and a platform which includes a velocity variator for the motor-pump, a pressure-relief valve for simultaneous control of a gas pipeline, the scrubber and the 2-phase separator, and, a programmable logical controller.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: October 13, 1992
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventor: Fernando H. da Costa Filho
  • Patent number: 5151112
    Abstract: A pressure generator and gas scrubber includes a scroll casing having a gas discharge outlet and a plurality of liquid outlets; a hollow shaft extending through the casing for supplying water thereto; a plurality of radially-extending water feed tubes centrally positioned in the casing and secured to the hollow shaft in fluid communication therewith, each tube having an open outlet end at the free end thereof such that liquid supplied through the hollow shaft travels to the open outlet ends of the feed tubes and each tube having a constricted opening at the open outlet end thereof; a drive motor connected to the hollow shaft for rotating the hollow shaft and the plurality of feed tubes; and two gas inlet boxes positioned on opposite sides of the scroll casing in fluid communication with a central portion of the casing, for supplying a contaminated gas to be scrubbed to the casing adjacent the inlet ends of the feed tubes, such that water jets ejected from the open outlet ends of the feed tubes pull the gas ad
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: September 29, 1992
    Inventor: Daniel E. Pike
  • Patent number: 5149346
    Abstract: An apparatus for reducing high vibration and pulsation levels generated by he discharge of gas-liquid mixtures from compressors. A tuyere is positioned within the compressor housing to separate the gas from the liquid.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 22, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Harry J. Skruch, John R. Ward
  • Patent number: 5149339
    Abstract: A rotary particulate separator for removing particulates from a pressurized gas stream such as that emanating from a reactor vessel is disclosed which precharges the particles in the gas stream, and then utilizes the charge on the particles to induce them from the main flow path through an airblock and into the rotary particulate separator. The rotor of the rotary particulate separator has polarized plates which use a first charge opposite that on the charged particles to attract the particles as they enter the rotation chamber, and then use a second charge of the same polarity as the charge on the charged particles to release the particles into a control gas flow vortex which draws the particles radially inwardly into an exit aperture contained in the center of one of the rotor segments and out from the device. Pressure letdown devices are used to drop the pressure of both the control gas flow exiting the separator with the particles and the cleaned gas stream.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: September 22, 1992
    Assignee: California Institute of Technology
    Inventor: Earl R. Collins, Jr.
  • Patent number: 5149348
    Abstract: A filter system for large containers, in particular, silos, with a hollow section containing at least one filter and having an air inlet opening connectable with the large container and an air outlet opening in communication with the filter is disclosed. The filter is insertable into the air outlet opening and is supported by a filter flange on the edge of the air outlet opening. The end of the hollow section having the air outlet opening is covered by a dome connected to the hollow section such that it is movable between an open and closed position.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: September 22, 1992
    Assignee: Bissinger GmbH
    Inventor: Heinz Bissinger
  • Patent number: 5149341
    Abstract: Deaeration apparatus for removing entrained air from liquid paper coating and method includes a cylindrical vortex tube which has an inlet end with a vortex generator insert formed with helical flighting surrounding a solid center shaft. The flighting has an outer diameter which is proportioned to be received in the tube inlet and causes a vortex flow to the coating material. A rejects conduit is positioned in the outlet end of the vortex tube with an opening which faces the vortex generator insert and which is positioned on the axial center of the tube and spaced from the vortex generator. The entrained gas forms as bubbles on the vortex generator shaft and form a column immediately downstream of the insert so that the base of the column is at the inner end of the generator shaft and extends toward and into the rejects conduit. The very small bubbles are also carried by the mass flow of the coating toward the outlet end of the tube and into the open end of the reject conduit.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: September 22, 1992
    Inventors: John A. Taylor, Paul J. Caryk