Patents Represented by Law Firm Bachman and LaPointe
  • Patent number: 4207134
    Abstract: Apparatus for the preparation of hollow plastic articles wherein a more rapid operating cycle is obtained with less effect upon the temperature of the parison. The apparatus includes a first core, means for providing a parison thereon, a temperature controlled first mold engageable with said first core and parison, means for separating the first core from the first mold and parison contained therein, a second core in spaced relationship to the first core, means for transferring the parison to the second core, a blow mold in spaced relationship to said first mold for fully expanding the parison and means for transferring the second core and parison to the blow mold, wherein the blow mold is stationary and the second core with parison thereon is brought into alignment with the blow mold and is inserted therein.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: June 10, 1980
    Inventor: Emery I. Valyi
  • Patent number: 4206263
    Abstract: The minute pores and discontinuities which are normally present in protective oxide coatings on carbon bodies can be closed and, if desired, filled by immersing the coated carbon body in a metal salt melt having a boiling point above 400.degree. C., and electrodepositing the melt on the coated carbon body. When the electrodeposition step is continued sufficiently long to fill the pores, the product when cool is a coated carbon body carrying an oxidation agent-resistant coating which is keyed into the surface of the carbon.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: June 3, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Hans W. Rieger, Hanspeter Alder
  • Patent number: 4202753
    Abstract: The present invention provides a highly efficient reduction cell hood which utilizes an improved shield installation which is easily movable by hand thereby allowing for fewer shields which results in a corresponding decrease in the number of joints which must be sealed. The reduction cell hood of the present invention is constructed of a material which is capable of withstanding the operating temperatures of the electrolyte process without warping, buckling or other damage thereto.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: May 13, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Donald R. Bradford, James E. White
  • Patent number: 4198231
    Abstract: Gallium and gadolinium are recovered and separated from scrap material of substances which contain both of these elements in the form of oxides or compounds which can be transformed to the oxides.The scrap is finely ground and then dissolved in a strong, aqueous mineral acid. The gadolinium is precipitated from the purified solution as the oxalate; then the gallium is deposited in the metallic form by means of electrolysis. The electrolytic deposition of the gallium can also take place before the gadolinium is precipitated out as the oxalate.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: April 15, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventor: Erwin Gusset
  • Patent number: 4196067
    Abstract: The vertical magnetic force lines in electrolytic reduction cells, in particular in cells for the production of aluminum, are absorbed by a device comprising the steel pot shell and a covering which covers the upper part of the cell and is magnetically connected to the steel shell. The effect of this covering is uniform over the whole of the cell. The covering is made of a magnetic material which conducts well, and it can for example be in the form of a hood, frame or cross bars.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: April 1, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventor: Hans Friedli
  • Patent number: 4196262
    Abstract: An aluminum composite is provided having improved resistance to intergranular corrosion, especially a brazed aluminum composite. The composite comprises an aluminum base alloy core clad with a brazing alloy consisting essentially of from 4-14% silicon, from 0.01-2% of a material selected from the group consisting of indium, gallium and mixtures thereof, and the balance essentially aluminum. The additions to the brazing alloy reduce the tendency for the brazing alloy layer to induce intergranular corrosion of the core alloy layer. They also reduce the pitting rate of the brazing alloy layer.
    Type: Grant
    Filed: March 15, 1979
    Date of Patent: April 1, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Michael J. Pryor, James M. Popplewell, William H. Anthony
  • Patent number: 4194127
    Abstract: Polished single crystal wafers are checked for defects by means of a method employing a optical microscope. The image is blurred by a translucent material and the transmitted light is then sensed by a light sensitive instrument which records the increased light intensity caused by a defect passing through the field of view. The position of the defects are then plotted automatically.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: March 18, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventor: Walter Schmidt
  • Patent number: 4191954
    Abstract: An improvement in fault detection and stop motion systems in which an electronic circuit is capable of sensing and displaying any one of a number of malfunctions on each of a plurality of parallel operating members on a machine and interrupting operation thereof upon detection of any such malfunction.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: March 4, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Charles G. Faris, Edward H. Manley
  • Patent number: 4190297
    Abstract: A wheel for pneumatic tires for use on motor vehicles having a ring-shaped rim around a central disc or dish wherein the rim is made of a composite section with a light metal body section and an insert of higher strength metal which forms part of the surface of the body section.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: February 26, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventor: Walter Schmidt
  • Patent number: 4187657
    Abstract: An improved design for both fixed and operating type windows is disclosed in which the window is thermally broken without the use of an insulating material as a thermal break. The improved windows of the present invention are designed so as to enable both fixed and operating types to be secured to the same frame member thus allowing for easy and architecturally pleasing unit stacking.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: February 12, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventor: Ronald D. Sukolics
  • Patent number: 4185810
    Abstract: An improved apparatus for cooling heated metal items such as extrusion billets, and in particular billets of aluminum alloys is disclosed. The apparatus comprises a cooling chamber, means for transporting individual billets into and out of the cooling chamber, and inlet and outlet openings for the ingress and egress of a cooling medium from said chamber. A fan or the like is employed to produce a flow of air through the cooling chamber.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: January 29, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Walter Eichenberger, Bernhard Hilge
  • Patent number: 4184302
    Abstract: The disclosure teaches a firmly joined composite applicable for joining objects of various shapes, including flat plates, curved plates, cylindrical objects, pipes and rods of circular and other than circular cross section. The joined composite is simple to prepare and can be made hermetically tight if desired.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: January 22, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Anatole M. Gurewitsch, Robert W. Weidemann
  • Patent number: 4180622
    Abstract: A wear resistant coating for the working faces of disc-shaped machine parts made of aluminum or aluminum alloys is applied to the parts by thermal spraying. The coating comprises two components, one being aluminum oxide pure or mixed with another oxide and the other aluminum or an aluminum-silicon or aluminum-magnesium alloy. Such a coating, called a cermet, can be used advantageously on brake discs, clutch plates, and the like.
    Type: Grant
    Filed: July 21, 1978
    Date of Patent: December 25, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventors: Kurt Burkhard, Peter Kunzmann
  • Patent number: 4179102
    Abstract: The disclosure teaches an improved method and apparatus for the treatment of liquids with gases and especially for use in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a swirling tank reactor. The swirling tank reactor is in the form of a substantially cylindrical chamber and is characterized by having a liquid inlet at the top thereof and at least one gas inlet at the bottom of said substantially cylindrical chamber wherein at least either the liquid inlet or the gas inlet is positioned with respect to the wall of the cylindrical chamber for tangentially introducing either liquid or gas such that the liquid swirlingly flows from said liquid inlet to a liquid outlet. In a preferred embodiment for the degassing and filtration of molten metal, a filter-type medium is positioned beneath said molten metal inlet to filter the molten metal prior to delivering the same to a casting station.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: December 18, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventor: Joseph A. Clumpner
  • Patent number: 4177299
    Abstract: An object is made out of aluminum or aluminum alloy in a form such as foil, sheet, containers and the like and has a 5 to 25 .mu.m thick oxide layer produced by anodic oxidation. This oxide layer exhibits a crack-free elongation of at least 0.65 parts per thousand in the non-sealed condition and the ratio of the crack-free elongation of the oxide in the non-sealed condition to that in the colored, non-sealed condition lies between 1:1.2 and 1:5.5. Such an object can then be colored by heat-transfer printing without producing hair-line cracks in the oxide layer, which would give the image so produced an unattractive appearance.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: December 4, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventors: Harald Severus, Horst Birkmaier
  • Patent number: 4177066
    Abstract: The disclosure teaches an improved design for a swirling tank reactor for use in the degassing and filtration of molten metal. The swirling tank reactor has a larger first cylindrical section and a second smaller cylindrical or converging conical section located beneath said first cylindrical section. Conical shaped fluxing gas inlet nozzles are provided in the walls of both the first and second sections so as to maximize fluxing gas bubble dispersion.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: December 4, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventor: Joseph A. Clumpner
  • Patent number: 4177065
    Abstract: The disclosure teaches an improved method and apparatus for the treatment of liquids with gases and especially for use in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a swirling tank reactor. The swirling tank reactor is in the form of a substantially cylindrical chamber and is characterized by having a liquid inlet at the top thereof and at least one gas inlet at the bottom of said substantially cylindrical chamber wherein at least either the liquid inlet or the gas inlet is positioned with respect to the wall of the cylidrical chamber for tangentially introducing either liquid or gas such that the liquid swirlingly flows from said liquid inlet to a liquid outlet. In a preferred embodiment for the degassing and filtration of molten metal, a filter-type medium is positioned beneath said molten metal inlet to filter the molten metal prior to delivering the same to a casting station.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: December 4, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventor: Joseph A. Clumpner
  • Patent number: 4174965
    Abstract: A process involving a static mixer for the continuous production of metal alloys is such that molten metal is passed through a filter bed of loose particulate material exposed to atmospheric pressure. The alloying addition is made to the metal via a proportioning and feed device as the metal enters the filter bed. As a result the alloy components are dissolved in the molten metal and, due to the repeated division and reuniting of the streams of charge in the bed, the alloying elements are mixed with the metal before leaving the mixing chamber. The degree of mixing can be changed by changing the size of particles in the granular bed.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: November 20, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventor: Kurt Buxmann
  • Patent number: 4174934
    Abstract: Method and apparatus for the preparation of hollow plastic articles wherein an improved injection blow molding process is obtained and improved temperature control of the parison is obtained by the use of a plurality of molds and cores. At least one temperature controlled mold and core is used to adjust the temperature of the parison. The temperature adjusted parison is then stretched and/or blown in at least one second mold by a second core, cooled therein and transferred by at least one third ejector core to additional finishing molds for further cooling or to removal means.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: November 20, 1979
    Inventor: Emery I. Valyi
  • Patent number: 4174785
    Abstract: Adjustable flexible sealing members for the peripheral edge of a floating deck are disclosed. At least two sealing members are attached to the peripheral edge of the floating deck in such a manner that both vertical and horizontal movement of the members may be adjusted from the surface of the floating deck. Such sealing members greatly reduce or eliminate the evaporative loss from volatile liquids protected by the floating deck in a storage tank.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: November 20, 1979
    Assignee: Swiss Aluminium Ltd.
    Inventor: Albert C. Garnett