Patents Examined by L. I. Schwartz
  • Patent number: 6923799
    Abstract: A subdural evacuating port system for removing subdural fluid accumulations in a manner that is minimally invasive and promotes decompression, expansion and recovery of the brain. The system includes a subdural evacuating port device including a tubular portion for partial insertion into an opening in a skull of a patient. The tubular portion has a proximal end and a distal end and a lumen extending between the proximal and distal ends. The port device has a pair of wings for facilitating finger rotation of the tubular portion, with the wings extending outwardly from the tubular portion in substantially opposite directions from the tubular portion. The exterior surface of the tubular portion may have self-tapping threads at the proximal end and may have a plurality of annular barbs at the distal end. A kit for evacuating a collection of fluid from a subdural space may include the subdural evacuating port device and a retractor for spacing sides of an incision in a scalp away from each other.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: August 2, 2005
    Inventor: Wilson T. Asfora
  • Patent number: 5715600
    Abstract: A tool for installing and aligning a bearing cap in a universal joint so as to position an end surface of the bearing cap a predetermined distance above the outer surface of the arm of the end yoke is generally cup-shaped, including a generally flat, circular end portion having a hollow cylindrical skirt portion. The skirt portion defines an inner diameter which is slightly larger than the outer diameter of the bearing cap. The skirt portion also defines an axial length which is equal to the desired predetermined distance. A cut-out may be formed in a portion of the tool to receive a spring tab or other axial retaining structure for the bearing cap. Also, one or more apertures may be formed in the end portion of the tool to receive anti-rotation protrusions formed on the end surface of the bearing cap. The universal joint is assembled by initially disposing the tool over the end surface of the bearing cap such that the inner surface of the end portion abuts the outer end surface of the bearing cap.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: February 10, 1998
    Assignee: Dana Corporation
    Inventors: Thomas J. Marriott, Steven L. Ingalsbe
  • Patent number: 5125847
    Abstract: A device electrically connects fluid-carrying pipelines, particularly subsea pipelines carrying viscous fluids and/or containing organic residues, allowing for the application of electricity through same, with the purpose of heating those pipelines, so as to prevent or eliminate deposits of organic residues onto the internal walls of the pipelines. The device permits also the utilization of electricity in combination with the simutaneous injection of special fluids. Basically, it includes an electrically conducting pipe (5) which is introduced in a terminal pipe (1) carrying viscous fluid, which is put in contact with the internal steel layer (3) of the terminal pipe (1) by means of electrically conducting fastening element (8).
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: June 30, 1992
    Assignee: Petroleo Brasileiro S.A.
    Inventor: Carlos Alberto D. Goncalves
  • Patent number: 4768294
    Abstract: A paper machine or similar apparatus is provided with a device for transferring a paper or board web from a press section to a dryer section on an endless, machine-wide support belt. The belt operates over a guide roll in the press section and a drying cylinder of the dryer section. Transfer of the paper or board web is improved, especially for heavy grades, with regard to the open draw length, the web stretch and web drying. The drying cylinder, guide roll and endless support belt looped therearound are interposed between the press section and first cylinder drying group, which is not drivingly coupled to the first cylinder. A clothing generally looped around and operable with the first cylinder drying group contacts the endless support belt for transfer of the web.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: September 6, 1988
    Assignee: J. M. Voith, GmbH
    Inventor: Reinhold H. Weideburg
  • Patent number: 4766806
    Abstract: A shutter assembly for a whole house fan is disclosed which can be flush mounted (i.e., substantially coplanar) with the underside surface of a ceiling so as to close off an opening in the ceiling leading to a whole house fan located thereabove. The shutter assembly comprises a frame somewhat larger than the opening and adapted to be flush mounted to the underside of the ceiling surrounding the opening. The frame is comprised of side and end members. A bracket at the intersection of the frame members securely joins the frame members together. The brackets have temporary attachment tabs for temporarily holding the frame in place with respect to the ceiling sheathing until the frame is securely secured to the ceiling structure. These temporary securing tabs are carried by the brackets and are spaced from the portion of the frame which is flush mounted to the underside of the ceiling so as to hold the ceiling between the frame and the tabs, and thus hold the frame assembly in place.
    Type: Grant
    Filed: January 2, 1987
    Date of Patent: August 30, 1988
    Assignee: Emerson Electric Co.
    Inventors: Frank J. Tomiser, Jr., James P. Shawcross
  • Patent number: 4756092
    Abstract: An apparatus and method for removing water from sludge waste material is provided. A layer of sludge is disposed upon an endless screen belt which is in turn dragged across a heated plate such that water in the sludge is evaporated and escapes from the sludge as steam. The endless screen is formed by a chain link belt which provides a plurality of discrete containers for small volumes of the sludge. The sludge may also be preheated just prior to drying by the injection of hot air columns into the sludge, such that the sludge is heated and agitated. The steam escaping from the drying sludge is directed into a heat exchanger which in turn heats the preheating air. Waste gases from a heating station are returned to the burner at the heating station to oxidize foul smelling chemicals and then reduce the odors generated by a sludge drying operation.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: July 12, 1988
    Assignee: Habersham Environmental Products
    Inventors: Charles M. Anderson, deceased, Wayne Anderson
  • Patent number: 4754557
    Abstract: A relatively compact, streamlined dryer for use in hopper-bottomed grain bins includes a foraminous, cylindrical casing surrounding a foraminous, cylindrical duct, which is coaxial with the casing, the openings of the casing and duct being directed downwardly to reduce the risk of clogging; triangular brackets extending outwardly and downwardly from the casing for pivotally supporting feet so that the dryer can readily be mounted on the sloping floor of a bin over the central discharge opening thereof without substantially impeding the unloading of grain; an inlet duct in the side of the casing for admitting air into the dryer; and a frusto-conical, annular cap on the top end of the dryer closing the top of the passage between the casing and the duct.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: July 5, 1988
    Inventor: Eilif J. Anderson
  • Patent number: 4750275
    Abstract: A cylinder drying machine including a plurality of reflecting members arranged in opposition to at least the cloth-contacting surface of each of thermal cylinders, the reflecting members being disposed separately over the cloth-contacting surface of a thermal cylinder so that the distance between the front end portion of each of the reflecting members and the thermal cylinder is shorter than that between the rear end portion thereof and the thermal cylinder with the outer surface of the front end portion of one of two adjacent reflecting members opposed via a clearance to the inner surface of the rear end portion of the other.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: June 14, 1988
    Assignee: Sando Iron Works Co., Ltd.
    Inventors: Yoshikazu Sando, Hiroshi Ishidoshiro
  • Patent number: 4741664
    Abstract: An axial flow liquid pump comprises an outer tube, an inner tube positioned within the outer tube, and a driven shaft journaled within the inner tube. An impeller is secured near to the lower end of the shaft. A conduit delivers liquid to be pumped from the exterior of the outer tube to the lower end of the inner tube. The conduit is sized for permitting liquid to be drawn into said impeller such that the pressure in the vicinity of the lower end of the inner tube is equal or less than the pressure at the exterior of the outer tube near the conduit intake but sufficient not to draw air down through the inner tube.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: May 3, 1988
    Assignee: Thompson-Chemtrex, Inc.
    Inventors: Ronald F. Olmstead, H. David Bowes
  • Patent number: 4734997
    Abstract: In a method and apparatus for drying filamentary material, a duct is provided for enclosing a portion of a passline. The duct comprises two parts relatively disposed laterally of the passline. These parts are relatively movable away from one another laterally of the passline to provide a duct open position and towards one another to provide a duct closed postion. First and second guide wheels are provided for guiding the filamentary material along the passline through the duct. The guide wheels are relatively movable along the passline between the duct parts in the duct open position between a first pair of relatively close positions and a second pair of positions at opposite ends of the duct. With the duct in the duct open position and the guide wheels in the first pair of positions, filamentary material is fed over the guide wheels.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: April 5, 1988
    Assignee: Northern Telecom Limited
    Inventors: Gordon D. Baxter, James C. Grant, John N. Garner
  • Patent number: 4689895
    Abstract: Disclosed is an apparatus for providing a shower of fog onto a web or a machine component in contact with a web. The fog, which has a temperature lower than the temperature of the surface of the web or the machine component to be cooled, is applied to the surface and is caused to evaporate by the difference in the temperatures. A supply of dry air is supplied to transport the evaporated fog from the region surrounding the surface to be cooled. Fog may be generated through the use of an air-atomizing nozzle which propels water and compressed air through a small orifice under pressure to create an atomized mist or fog. The fog may also be generated through the use of an ultrasonic transducer which expels fine droplets of water from its surface by means of a high-frequency oscillating transducer motion. In one embodiment, the fog may also be generated in controlled specified quantities locally at each nozzle as required to provide for a controllable fog application rate across the full apparatus width.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: September 1, 1987
    Assignee: Thermo Electron-Web Systems, Inc.
    Inventors: Bruce F. Taylor, Kenneth G. Hagen
  • Patent number: 4631836
    Abstract: A method of activating down and fiber materials uses a plurality of nozzles for ionized air and nozzles for normal air alternately at proper intervals in the passage of the materials to be treated. The materials are subjected to ionization by ionized air ejected from the nozzles for ionized air produced by an air ionizer connected to the ionized air nozzles. Then the materials are subjected to suspension of the progress of oxydization caused by ozone by normal air ejected from the normal air nozzles. This process is repeated several times while the materials are passing through the passage. The repeated processes of such alternate ionization and suspension of the progress of oxydization caused by ozone allow the materials to be gradually and intensively ionized, resulting in producing finally activated materials which are characteristic of restored bulkiness and elasticity. An enclosure can also be adopted instead of the passage.
    Type: Grant
    Filed: July 30, 1985
    Date of Patent: December 30, 1986
    Assignee: Iwata Co. Ltd.
    Inventor: Takuzo Iwata
  • Patent number: 4441261
    Abstract: A method and apparatus for cooling hot bulk material in a cooling bunker by passing cooling gas streams therethrough in a manner such that the bulk material is cooled in a uniform manner while avoiding temperature fluctuations of the outflowing heated cooling gas. The cooling gas is passed through the hot bulk material in at least two gas streams, one of which is directed through a core zone of the hot bulk material and another of which is passed through a peripheral zone thereof. The flow rates of the respective cooling gas streams are regulated according to the temperature of the outflowing heated cooling gas which may be sensed by the temperature of a fluid flowing through heat exchanger over which the heated cooling gas passes.
    Type: Grant
    Filed: June 1, 1981
    Date of Patent: April 10, 1984
    Assignee: Waagner Biro Aktiengesellschaft
    Inventor: Georg Beckmann
  • Patent number: 4429472
    Abstract: Fabrics are dried by tumbling the fabrics in a drying chamber into which hot air is introduced. The hot air is formed by passing ambient air through a solar heater to heat the air to a first temperature, and then further heating the air with a second heater such as a burner. The burner can be one which burns a fuel in the presence of combustion air. The combustion air can be a portion of the air that is passed through the solar heater.After drying the fabrics by this method, the drying zone can be cooled and the fabrics can be further dried by passing air through the solar heater, and then without further heating the air that has passed through the solar heater, introducing the air to the drying chamber.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: February 7, 1984
    Assignee: Richard W. Dodelin
    Inventors: Richard W. Dodelin, Darrell W. Hurst, George R. Osos
  • Patent number: 4428128
    Abstract: A jet tube dryer retainer system for adapting an existing jet tube dryer of the type using flanged jet tubes manufactured by Coe Manufacturing Co. to receive and retain flangeless replacement jet tubes in such a manner as to allow rapid removal and reinstallation of the replacement jet tubes, permit longitudinal expansion of the replacement jet tubes, and decrease the likelihood of future warpage and misalignment of the replacement jet tubes. Structural members for supporting the replacement jet tubes and strengthening the jet tube dryer frame are welded to the dryer frame at the air-delivery end and chain-drive end of each dryer section. A mounting post locates the narrow, closed end of the respective replacement jet tubes relative to the plane of the respective dryer decks and maintains the replacement tubes in a position which is fixed laterally and vertically while allowing slight longitudinal movement of the narrow closed end of the tube.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: January 31, 1984
    Assignee: The Coe Manufacturing Company
    Inventors: Fred Coulson, Jerry M. Smith
  • Patent number: 4414756
    Abstract: An improved method and apparatus for treating strand-like material is described. The method comprises conveying loops of such strand-like material supported by conveyor means through a heating zone wherein provision is made for causing certain portions of said loop material to experience substantial peripheral sliding movement in their contact with and with respect to said conveyor means, which movement has been found to reduce irregularities in the subsequent dyeing of the strand-like material.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: November 15, 1983
    Assignee: American Hoechst Corporation
    Inventors: Carroll Simpson, Ludwig Schierl
  • Patent number: 4411075
    Abstract: A process for drying solvent containing material is disclosed. The solvent containing material is passed through a drying chamber containing an inert gas. Inert gas is introduced into at least one lock chamber preceding and/or following the drying chamber. An annular flow of inert gas is produced in the lock chamber. A minor amount of the inert gas required for drying the material is jetted into the lock chamber proximate to the inlet and/or outlet opening of the drying chamber and a mixture of inert gas and sucked-in external air being discharged from the lock chamber in the peripheral region of the annular flow. The major portion of the inert gas is introduced directly into the drying chamber. An apparatus for practicing the invention is also disclosed.
    Type: Grant
    Filed: October 14, 1981
    Date of Patent: October 25, 1983
    Assignee: Lohmann GmbH & Co. KG
    Inventor: Bernd Blaudszun
  • Patent number: 4357762
    Abstract: An apparatus for controlling the ventilation effect on material dried in a tunnel drying plant, through which goods in the form of architectural ceramic structures, such as of bricks or tiles, to be dried and placed in layers, are moved in counter-current relation to an air current. The tunnel drying plant is designed with doors at the goods inlet and outlet ends. At the goods outlet end there is a pipe connection for blowing air under gage pressure into the plant, while at the goods inlet end and the top part of the tunnel drying plant there is an aspiration opening with an aspiration pipe connection. In the free cross-section of the flow tunnel drying plant, near the roof, there are air guiding bodies, which may be moved backwards and forwards in the length direction of the plant using cars on rails. These air guiding bodies are hollow and have a streamlined form.
    Type: Grant
    Filed: February 24, 1981
    Date of Patent: November 9, 1982
    Assignee: Fuchs & Co. Aktiengesellschaft fur Elektrodraht-Erzeugung und Maschinenbau
    Inventor: Claudio Eustacchio
  • Patent number: 4338731
    Abstract: An energy saving vent is provided for selectively directing hot, moist exhaust air from a clothes dryer either through a downstream vent sleeve to the outdoors, or through a vent port to the indoors. The vent includes four major components principally molded from a synthetic plastic resin, the components being: an open sided housing; a closure panel for closing one open side of the housing; a valve member within the housing for selectively directing air through the housing in alternate paths; and a filter screen assembly for another open side of the housing. The selectively swingable valve carries a pressure relief means adapted to provide for passage therepast of pressurized exhaust gas when the valve is in its position to direct air flow indoors, and in the event that the flow of air indoors is blocked by the filter screen being clogged. The preferred filter screen is a truncated, basket-like, member that is carried on a frame which is removably carried in a slide channel defined on the housing.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: July 13, 1982
    Assignee: Melard Manufacturing Corporation
    Inventors: Sidney J. Shames, Harold Shames
  • Patent number: 4338730
    Abstract: A dryer wherein wet clothing placed in a drying chamber is dried by hot air resulting from the heat generated by an electric heater. The dryer comprises a ventilation fan which draws off air streams from the drying chamber and introduces the same amount of air streams as those thus removed into the drying chamber during a drying cycle. An amount of air streams ventilated by the ventilation fan is set at less than 1 m.sup.3 /min per kilowatt of the heat-generating capacity of the electric heater while the electric heater is operated.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: July 13, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hisao Tatsumi, Takashi Kawano