Seamless Patents (Class 220/DIG22)
  • Patent number: 5750222
    Abstract: An organic resin-coated seamless can with necked-in portion is disclosed, which is produced by subjecting a resin-coated steel sheet to drawing-re-drawing for reducing thickness or to drawing-re-drawing-ironing for reducing thickness-ironing and which has a ratio of diameter of necked-in portion to diameter of body of 0.9 or less than that, said steel sheet being coated by 5- to 30-.mu.m thick organic resin layer on both surfaces of aluminum-killed, surface-treated steel sheet of 0.01 to 0.13 % by weight in total carbon amount and not more than 6.5 .mu.m in average grain diameter having been subjected to over-aging after continuous annealing to adjust to not more than 10 ppm in solid-dissolved carbon amount. This can scarcely has rough surface or pinholes in the necked-in portion even when the necked-in portion has been considerably compressed upon its formation.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: May 12, 1998
    Assignee: Toyo Seikan Kaisya, Ltd.
    Inventors: Ikuo Komatsu, Nobuyuki Sato, Katsuhiro Imazu
  • Patent number: 5700529
    Abstract: A seamless can obtained by forming a laminated material of a metal and a polyester film into a cup such that a final draw ratio defined by H/D (H:height, D:diameter of the bottom portion) is not smaller than 1.5, wherein a polyester (A) on the bottom portion of the container has a biaxial orientation degree (R.sub.X) of from 2.5 to 20 defined by the following formula (1),R.sub.X =I.sub.A /I.sub.B (1)and a polyester on the barrel portion of the container has a monoaxial orientation satisfying the following formula (2),0.55<cos.sup.2 .phi.<1-exp ?-0.45I.sub.A /I.sub.B -1.1.epsilon.+0.53!(2)wherein R.sub.x, I.sub.a, I.sub.b and cos.sup.2 .phi. are as defined in the specification, and a method of producing the same.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: December 23, 1997
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Akira Kobayashi, Hideo Kurashima, Harumi Sato, Satoshi Fujita, Katsuhiro Imazu
  • Patent number: 4768672
    Abstract: A drawn and ironed container having a reduced neck around an upper open end has a bottom profile which exhibits excellent strength characteristics and nests with an end double-seamed to the open end of the container. The bottom profile includes a center spherical dome surrounded by a U-shaped annular portion defining a lower support surface for the container. A joining segment is integral with the container side wall and the U-shaped annular portion includes a first annular arcuate portion having an exterior radius and a second annular arcuate portion having an interior radius.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: September 6, 1988
    Assignee: American National Can Company
    Inventors: Sam C. Pulciani, Robert M. Szczerba
  • Patent number: 4685582
    Abstract: A drawn and ironed container having a reduced neck around an upper open end has a bottom profile which exhibits excellent strength characteristics and nests with an end double-seamed to the open end of the container. The bottom profile includes a center spherical dome surrounded by a U-shaped annular portion defining a lower support surface for the container. A joining segment is integral with the container side wall and the U-shaped annular portion includes a first annular arcuate portion having an exterior radius and a second annular arcuate portion having an interior radius.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: August 11, 1987
    Assignee: National Can Corporation
    Inventors: Sam C. Pulciani, Robert M. Szczerba
  • Patent number: 4681237
    Abstract: In the manufacture of metal packaging cans metal sheet is deep-drawn and ironed to form a seamless tube having a bottom in one-piece therewith, and the tube is cut transversely to remove excess material at the end remote from the bottom. This forms a cylindrical body and bottom of a two-piece can. To minimize waste of material and to make possible the manufacture of a thin-walled three-piece can, the method includes cutting the deep-drawn and ironed tube transversely at at least one location intermediate the bottom and the end remote from the bottom so that, from the tube, there are formed a cylindrical body and bottom of a two-piece can and at least one cylindrical body of a three-piece can. Suitably, the tube is shaped by the deep-drawing and ironing so as to have a lesser wall-thickness at regions corresponding to the sidewalls of the cans and a greater wall-thickness at regions which correspond to the flange portions of the cans.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: July 21, 1987
    Assignee: Hoogovens Groep B.V.
    Inventor: Leo Hartman
  • Patent number: 4609118
    Abstract: A convex type bottom with a bearing rim for bottles for industrial gases, obtained by hot forging a steel billet, has the lower outer surface consisting of a central circular flat area (2), a first frustoconical annular area adjacent the central area (2), inclined upwards, a second frustoconical annular area adjacent the first frustoconical annular area, inclined downwards, and a subvertical frustoconical area (6) radiused, on the one side, to the second frustoconical annular area and, on the other side, to the flat surface (7) of the bearing rim (8). Provided on the inclined frustoconical annular areas are corrugations (3,4,5). Such a configuration of the bottom permits the defects to be eliminated due to creeping of the material during forging.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: September 2, 1986
    Assignee: Simmel S.p.A.
    Inventors: Italo Pilotto, Gerardo Bozzetto
  • Patent number: 4457450
    Abstract: An improved sheet steel suitable for the production of containers and the like has a thin composite coating of nickel and zinc plated on both sides thereof. The steel substrate may be flat rolled blackplate and the composite nickel-zinc coating may be plated thereon by drawing a running length or strip of the steel through a nickel electroplating bath to which has been added the necessary concentration of zinc, and electrodepositing the two coating metals simultaneously and in the desired proportions. The coated steel sheet is particularly useful in forming drawn and ironed cans although it may be used for other purposes.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 3, 1984
    Assignee: National Steel Corporation
    Inventors: John R. Smith, William D. Bingle, Lowell W. Austin
  • Patent number: 4454960
    Abstract: Disclosed is a draw-ironed can obtained by subjecting a surface-treated steel plate to draw-ironing, which consists of a relatively thick bottom portion and a relative thin barrel portion and has no seam in a joint portion between the barrel portion and bottom portion, wherein the barrel prtion has a surface layer containing tin in an amount of 0.01 to 1.70 g/m.sup.2, the surface layer comprises (i) a tin-iron alloy layer or (ii) a combination of an iron surface and a tin-iron alloy layer at an exposed area ratio of 15 to 80%, and the surface layer of the bottom portion consists substantially of a tin-plated cover layer.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: June 19, 1984
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Katsuhiro Imazu, Toshiaki Watanabe
  • Patent number: 4405058
    Abstract: This disclosure relates to a product, the process for making same from precoated metal and the tool used for making the product. The product is a concurrently drawn and ironed sanitary food can wherein the side wall thickness of the container is relatively uniform and approximately 0.001" thinner than the thickness of the starting material. The process is a concurrent multiple drawing and ironing operation wherein the diameter and the wall thickness are reduced in each of a plurality of operations. Finally, the tools used for each drawing and ironing operation have particular configurations designed to permit this concurrent forming of both the diameter and the side wall thickness.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: September 20, 1983
    Assignee: American Can Company
    Inventor: Thomas L. Phalin
  • Patent number: 4398164
    Abstract: A 1/4 wave length coaxial resonator comprises an outer cylindrical portion, an inner cylindrical portion positioned coaxially in the outer cylindrical portion, with the outer and inner cylindrical portions connected at one end by a radial connecting portion, and a dielectric unit disposed therebetween. The outer cylindrical portion and the inner cylindrical portion and the radial connecting portion are formed with a unitary member of a metallic extruded material formed by means of an impact extruding process so that the inner cylindrical portion is positioned coaxially in the outer cylindrical portion. As a result, a space is formed between the outer cylindrical portion and the inner cylindrical portion to allow for insertion of a hollow cylindrical dielectric unit.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: August 9, 1983
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshio Nishikawa, Sadahiro Tamura, Youhei Ishikawa, Haruo Matsumoto
  • Patent number: 4320848
    Abstract: An improved deep drawn and ironed metal shell for use as a pressure vessel having selectively controlled wall thicknesses to impart additional strength to predetermined portions of the improved metal shell. A stepped mandrel is utilized in conjunction with at least one ironing die to fabricate the improved metal shell.
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: March 23, 1982
    Inventors: Richard G. Dye, Arthur W. Robichaud
  • Patent number: 4264017
    Abstract: A bottom profile for a cylindrical two-piece drawn steel can is configured during manufacture so that the resultant shape may subsequently be altered by pushing downward at the outer profile ring adjacent the periphery with a simple cylindrical tool, thereby achieving a finished container with the desired configuration to be functionally and operationally interchangeable in a packing and processing line with traditional three-piece containers.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: April 28, 1981
    Assignee: American Can Company
    Inventors: Richard J. Karas, Guy C. Richards, Earl R. Van Alsburg
  • Patent number: 4219427
    Abstract: A conically shaped metal screen body, especially for household juice centrifugals, is made of a plain circular-sector screen foil member which is first produced. The sector member is then brought into the three-dimensional closed conical shape by forming a longitudinal seam along the radial edges. The upper end of the closed conical shape is then provided with a fitting flange for bracing and for deflecting the juice. The lower end is also provided with a fitting flange for connecting the screen body to the driving shaft and/or for securing a rasping or grating disk. The upper and lower fitting flanges of the screen body are made by non-cutting shaping from corresponding rim allowances at both radial ends of the screen foil member. Thus, the finished screen body is a single piece, integral structure.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: August 26, 1980
    Assignee: Balco Filtertechnik GmbH
    Inventor: Ernst Heidborn
  • Patent number: 4185749
    Abstract: Disclosed is a can body for a case, e.g. for an aerosol container, made of metal, such as aluminum. The thickness of the material of the cylindrical mouth section of the can body is greater than that of the other mantle sections of the can body. Below the mouth section the other surface of the mantle of the blank is polygonal as far as the lower section of the can body, the greatest outer diameter of the polygon being smaller than or equal to the outer diameter of the mouth section. The outer surface of the lower mantle section of the can body is cylindrical, the outer diameter of the cylinder being smaller than the smallest outer diameter of the polygonal section of the mantle. The inner surface of the mantle of the can body is cylindrical over its entire length. Disclosed is additionally a device for manufacturing the can body by cold extension of metal, e.g.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: January 29, 1980
    Assignee: Printal Oy
    Inventor: Matti Vartia
  • Patent number: 4085773
    Abstract: An overflow unit for a water heater installation has a plastic, resilient polystyrene pan with a bottom wall for receiving the bottom of the heater and a continuous side wall including inner and outer walls which diverge downwardly in a range of approximately five to fifteen degrees. A bottom edge portion of the outer wall is substantially coplanar with the bottom or outer face of the bottom wall but, preferably, extends outwardly a distance up to approximately 0.0001 inch from the outer face of the bottom wall when the pan is in a relaxed condition. Upon being placed on a supporting surface and receiving the water heater, the bottom edge portion of the outer wall is snugly and closely seated on the supporting surface. A drain coupling for receiving a drain line opens through the inner and outer walls and is in sealed engagement with the inner wall.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: April 25, 1978
    Inventor: Lyle D. Tinney
  • Patent number: 3951296
    Abstract: A wall-ironed container having annular reinforcing ribs projecting inwardly from the inside surface of the side walls, the ribs being spaced from the ends of the side walls and from each other, the outer surface of the side walls of the container being in the form of a cylinder.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: April 20, 1976
    Assignee: National Steel Corporation
    Inventors: William D. Swanson, Edward P. Spencer
  • Patent number: 3935943
    Abstract: A sealed carton containing lading assembled from a pair of cooperating sheet members comprising a body blank and a cover sheet. The body blank comprises a generally U-shaped formation formed from paperboard or like relatively rigid but foldable material. The cover member is formed from a continuous rectangular sheet member of lightweight, highly flexible material which is substantially thinner than the body blank materail. The body blank has a plurality of hingedly connected flanges folded to positions normal to the panels thereof and the sheet member is folded into a complementary U-formation and matingly engaged over the body blank with marginal edges of the sheet member adhesively secured to said flanges to form the sealed carton around the lading.
    Type: Grant
    Filed: May 3, 1974
    Date of Patent: February 3, 1976
    Assignee: Stone Container Corporation
    Inventors: Melvin H. Meyer, James L. Vickers, Edmund A. Waycie, Gerald Weitzel