Perforate Patents (Class 425/DIG37)
  • Patent number: 6030568
    Abstract: A method for producing a fibre reinforced three-dimensional product comprises depositing of long fibers in a mould consisting of a frame in which a carrier net for the fibers is suspended. The individual layers of a formed plane laminate are positioned in such a manner that only a first end is secured at a frame side. Said first ends are secured at different frame sides. In this manner it is possible, in a pressing procedure giving the product is three-dimensional shape, to obtain a virtually even distribution of the fibres, even in areas which are subjected to the longest move away from the plane original laminate. In this manner sound well-defined properties are obtained in the three-dimensional product formed.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: February 29, 2000
    Inventor: Torben Vestergaard
  • Patent number: 5868988
    Abstract: A method and apparatus for making a thermoplastic air bag cover having a hidden tear seam. A molten thermoplastic is injected into a mold cavity of a mold having a shape defining the air bag cover. An insert having a shape defining the tear seam is extended into the mold cavity before the molten plastic completely solidifies. The resulting air bag cover is cooled to a temperature beneath the softening point of the plastic. The completed air bag cover is then removed from the mold. The thickness of the air bag cover at the tear seam is within a range of 0.2 to 0.4 millimeters.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: February 9, 1999
    Assignee: Larry J. Winget
    Inventor: Roger R. Budnick
  • Patent number: 5824352
    Abstract: An apparatus for producing an apertured plastic film having a tricot-like texture. The apparatus includes a film forming member comprising a rotatable hollow drum having a pattern of apertures and a topographical outer surface formed by a cluster of peaks and valleys surrounding each aperture. A plastic film is placed on the apices of the peaks and fluid streams are projected against the film while the drum is rotated. The fluid forces the film against the topographical outer surface of the drum causing the film to become apertured and to have a tricot-like texture corresponding to the pattern of apertures and peaks and valleys.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 20, 1998
    Assignee: McNeil-PPC, Inc.
    Inventors: Ching-Yun Morris Yang, Charles Shimalla, Mordechai Turi
  • Patent number: 5776522
    Abstract: A method and apparatus for making a thermoplastic air bag cover having a hidden tear seam. A molten thermoplastic is injected into a mold cavity of a mold having a shape defining the air bag cover. An insert having a shape defining the tear seam is extended into the mold cavity before the molten plastic completely solidifies. The resulting air bag cover is cooled to a temperature beneath the softening point of the plastic. The completed air bag cover is then removed from the mold. The thickness of the air bag cover at the tear seam is within a range of 0.2 to 0.4 millimeters.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: July 7, 1998
    Assignee: Larry J. Winget
    Inventor: Roger R. Budnick
  • Patent number: 5451257
    Abstract: This invention provides a porous film useful as a fresh fruit and vegetable wrapping material which is obtained by forming a large number of small recesses in an organic film and which does not allow permeation of water, bacteria, and viruses, but allows permeation of a gas, e.g., the oxygen gas or the carbon dioxide gas, and water vapor. The porous film includes the organic film and the large number of recesses formed in the organic film and having an average opening width of 0.5 .mu.m to 300 .mu.m and inner surfaces exhibiting affinity.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: September 19, 1995
    Assignee: Seiji Kagawa
    Inventors: Seiji Kagawa, Yoichiro Kagawa
  • Patent number: 5397228
    Abstract: Device for the fabrication of concrete blocks having thin through holes for the drainage of water (perforated blocks), the fabrication taking place in at least one mold filled with concrete, which mold is supported on a mold table, and at least one male die for the compaction of the concrete. In order to create the thin holes, core pins are arranged in the region of the male dies or of the mold table or of the mold, which core pins are introduced inside the mold before the compaction of the concrete. Afterward, the concrete is compacted, the core pins are removed from the region of the mold, the compacted concrete blocks are completely demolded, and the concrete blocks are cured.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: March 14, 1995
    Assignee: Metten Produktions-und Handels-GmbH
    Inventor: Josef Metten
  • Patent number: 5372494
    Abstract: An apparatus for perforating packaging film which includes a cylindrical roller which is rotatable about a longitudinal axis. Bearings are mounted to each end of the roller to facilitate rotation. A number of longitudinal, circumferentially spaced grooves are formed in the outer surface of the roller. Perforation pin holders are removably and adjustably mounted in the grooves. The perforating pins are removably or permanently mounted on the holder.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: December 13, 1994
    Assignee: Reynolds Metals Company
    Inventor: Donald E. Vaughan
  • Patent number: 5346664
    Abstract: Apparatus for forming a continuous ribbon of connected dish-shaped sequins including a punch-and-die system for receiving a continuous ribbon of moldable material, a power source coupled to the continuous ribbon of moldable material to move the ribbon through the punch-and-die system incrementally to discrete spaced positions; and forming a score line at a first discrete position of the ribbon, punching a hole at a second discrete position of the ribbon, shaping the sequin at third and fourth discrete positions of the ribbon, forming the dish-shaped face at a fifth discrete position of the ribbon and accomplishing the formation of the score line, the hole, the outer shape of the sequin and the dish-shaped face on each sequin simultaneously by the punch-and-die system.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: September 13, 1994
    Inventor: Harry Lenson
  • Patent number: 5066450
    Abstract: A method and apparatus for making a preformed maskant sheet having a plurality of perforations corresponding to a pattern of perforations desired in a structure. A shaping surface is prepared on a sheet having the contours of the structure to be perforated. The surface is perforated in the precise desired pattern. A plenum is secured and sealed to the back of the shaping sheet, enclosing all of the perforations. A line for introducing air into the plenum is connected to the plenum. A coating of maskant material is sprayed onto the surface (which has mold release properties) while positive air pressure is maintained in the plenum. Air flows out through the perforations, keeping them clear of maskant. The maskant is then cured and the resulting self-supporting sheet is removed from the surface and placed against the structure to be perforated. The holes may then be formed by any suitable method, such as grit blasting etching or the like.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: November 19, 1991
    Assignee: Rohr Industries, Inc.
    Inventor: Arlo M. Steinicke
  • Patent number: 5060363
    Abstract: An apparatus and method for forming a hole in webbing constructed of thermoplastic material utilizes a clamping assembly for holding the webbing in a stationary condition for working thereon, a rotatable drilling tool having an elongated shank with a leading end and a flute spiraling along the shank from the leading end, and a burner for heating a portion of the drilling tool shank adjacent the leading end. The drilling tool is supported adjacent the clamping assembly for rotation of the tool about a rotation axis which corresponds with the longitudinal axis of the shank and for movement of the leading end of the tool along a linear path corresponding with the rotation axis into and out of the webbing held by the clamping assembly.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: October 29, 1991
    Assignee: BJ Automations, Inc.
    Inventor: Bradley J. Headrick
  • Patent number: 4956139
    Abstract: A blade of an exposure control such as an iris control device or a shutter control device is provided for use in cameras. A sheet of a resin or metallic material configured as desired into the final blade form is placed in an injection molding machine which has a pin-forming cavity on one side of the sheet. The sheet is broken and penetrated at its portions where pins are to be formed and fixed, such that portions of the material of the sheet are deformed to project into the cavity. A molten resin is injected through a sprue formed on the opposite side of the sheet to the cavity so that the injected resin fills the cavity to form a pin in such a manner that the deformed and projected portion of the material of the sheet is embedded in the pin-forming resin. Another pin is formed on the other side of the sheet simultaneously with the first-mentioned pin in the same manner in the same die apparatus.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: September 11, 1990
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Hiroshi Koizumi, Hideaki Kawata, Katsumi Arai, Koji Miyamoto, Tadaaki Ichikawa, Koji Ogata
  • Patent number: 4806303
    Abstract: A softened unperforated film and a perforated die which is generally cylindrical in movement are brought into contact and exposed, in a predetermined region, to a pressure gradient oriented radially of the die. The pressure gradient causes the local penetration of the film into the holes of the die and the consequent perforation of the film itself. The movement of the die is supported in a rigid manner solely upstream and downstream of the predetermined region in the common direction of movement of the film and the die. The die itself is subjected to a pulling action, along its generatrices at least close to the predetermined region.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: February 21, 1989
    Assignee: Fameccanica S.p.A.
    Inventors: Carlo Bianco, Pietro Susi
  • Patent number: 4772444
    Abstract: A method for hydraulically deforming a web of polymeric film while the film is supported on a moving forming structure to produce a novel microbubbled substantially fluid-impervious web exhibiting substantially the same consumer preferred soft and silky tactile impression and reduced noise generation levels heretofore only achievable in microapertured, and hence substantially fluid pervious polymeric webs. In a particularly preferred embodiment, the microbubbled polymeric web exhibits a fine-scale pattern of discrete mushroom shaped surface aberrations, each of said surface aberrations having its amplitude oriented substantially perpendicular to the surface in which the surface aberration originates. The method may also be utilized to produce fluid pervious microapertured webs which are known in the art. Apparatus for producing microbubbled and/or microapertured webs either in "planar" or "macroscopically expanded" form are also disclosed.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: September 20, 1988
    Assignee: The Procter & Gamble Company
    Inventors: John J. Curro, Charles W. Chappell, James W. Cree
  • Patent number: 4695422
    Abstract: The present invention provides for a process for transforming a substantially continuous web of substantially planar, deformable material having an indefinite length, a first surface, and a second surface into a formed material. The material has a transformation temperature range. The process comprises the following steps:(a) The web of material is provided on a forming structure with the first surface of the web of material proximate a forming surface of the forming structure. The forming surface moves in a direction of the length of the web of material and carries the web of material in that direction.(b) A liquid stream is applied to the second surface of the web of material. The liquid stream has sufficient force and mass flux to cause the web of material to be deformed toward the forming surface, such that the material acquires a substantial three-dimensional conformation.
    Type: Grant
    Filed: February 16, 1984
    Date of Patent: September 22, 1987
    Assignee: The Procter & Gamble Company
    Inventors: John J. Curro, Alan J. Trusty, George M. Vernon
  • Patent number: 4604156
    Abstract: A laminated, cylindrical, metal screen or molding element for vacuum perforation of plastic film or sheets, comprising two or more relatively thin cylindrical metal screens, each having a predetermined inside and outside diameter and each having a plurality of openings or holes therein of a predetermined size and geometrical shape, and said relatively thin screens stacked and bonded together, diametrically one inside the other thereby providing a screen of a desired thickness and a desired hole geometry wherein the holes in the screen have substantially straight walls perpendicular to the surface of the screen. A method of producing a relatively thick cylindrical metal screen for vacuum perforation of plastic film or sheets wherein the holes or openings in the screen have substantially straight walls perpendicular to the surface of the screen, comprising stacking and bonding together two or more matched relatively thin metal screens diametrically one inside the other.
    Type: Grant
    Filed: January 10, 1985
    Date of Patent: August 5, 1986
    Assignee: Ethyl Corporation
    Inventors: Garland E. Raley, Dean M. Spear
  • Patent number: 4483053
    Abstract: There is disclosed an ink roller and method of making same. The ink roller includes a tube having a plurality of holes. A porous ink-receptive sleeve is received about the tube. The end portions of the tube are coupled to bearing rolls and the bearing rolls are closed off to provide space for holding ink. At least one bearing roll is a separate part and is sealed to the tube and closures are sealed to both bearing rolls. Means are provided to keep the separate bearing roll from becoming uncoupled from the tube. The holes converge outwardly toward the surface of the roll to conduct ink to the sleeve. Also disclosed is method of making the roll.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: November 20, 1984
    Assignee: Monarch Marking Systems, Inc.
    Inventor: Paul H. Hamisch, Jr.
  • Patent number: 4446088
    Abstract: An inwardly offset surface of the cover of a carton is cut in a plane transverse to the top of the cover. A protrusion on the bottom surface of a complementary recess in the latch flap extends through the hole to latch the carton with the protrusion being within the cover recess to prevent accidental opening of the carton. The mold for producing the carton cuts the hole while thermoforming by relative movement between a male key mounted in the male mold member and female key mounted in the female mold member. Both keys have flat surfaces transverse to the closing motion of the molds. These flat surfaces are biased into engagement one with the other so that the plastic is cut in a shearing action.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: May 1, 1984
    Assignee: Mobil Oil Corporation
    Inventor: John Daines
  • Patent number: 4395216
    Abstract: Dough sheet perforator comprising plurality of axially spaced and aligned star wheels rotating against individual resilient backup members as sheeted dough is passed therebetween to assure complete dough perforation resulting from extended scraping action of teeth of star wheels along associated backup members.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: July 26, 1983
    Assignee: Anetsberger Brothers, Inc.
    Inventors: Richard J. Anetsberger, John A. Anetsberger
  • Patent number: 4341727
    Abstract: The manufacture of perforated vinyl strips by feeding the strip material continuously without interruption to a punching apparatus that has two pairs of cooperative rotary dies that punch out closely spaced perforations with the first pair of dies scoring the perforations and the second pair punching out the perforations.
    Type: Grant
    Filed: January 14, 1981
    Date of Patent: July 27, 1982
    Assignee: The B. F. Goodrich Company
    Inventors: Clifford A. Landsness, William R. Rinker, Thomas E. Barnes, Maurice E. White
  • Patent number: 4303609
    Abstract: The present invention relates to a process for extruding a thermoplastic sheath in the form of a tubular film provided with perforations and to a device for carrying out the process, according to which the extruded film passes over a skirt through which are blown jets of hot air provoking the perforation and formation of openings in the film; in the areas where the film is not to be perforated, air jets are also blown through channels of smaller width, therefore with a reduced pressure, so that the jets do not provoke the perforation of the film but form an air-cushion facilitating the flow of the film on the skirt; the channels are supplied from a pneumatic chamber with interposition of a rotary distributor formed by a ring made of graphite or self-lubricating material. The invention is applicable to the manufacture of partially perforated tubular films with a view to making packings.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: December 1, 1981
    Inventors: Jacques Hureau, Jean-Claude Hureau, Hubert Gaillard
  • Patent number: 4252516
    Abstract: A process and apparatus for the manufacture of thermoplastic sheet having elliptical perforations, the process including placing a thermoplastic sheet into contact with a continuously rotating molding element having a series of elliptical holes therein in which the major axis of the elliptical holes is oriented parallel to the direction in which the molding element is rotating, subjecting a surface of the thermoplastic sheet to the action of a fluid pressure differential to cause the material to flow into the elliptical holes of the molding element while maintaining the pressure differential to effect rupturing of the thermoplastic sheet and the formation of elliptical holes in the sheet, and continuously removing the molded portions of the thermoplastic sheet from the molding element.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: February 24, 1981
    Assignee: Ethyl Corporation
    Inventors: Garland E. Raley, James M. Adams
  • Patent number: 4248822
    Abstract: In the manufacture of a moisture-permeable covering film for absorbent material a thermoplastic film is provided with capillary-like protrusions by embossing, after which openings are produced in the ends of said protrusions. Embossing is effected with simultaneous cooling of the film, so that the ends of the protrusions are oriented in the thermo-elastic temperature range. By a renewed heating of the ends of the protrusions the openings are formed by shrinking, which also causes the edges of the openings to be thickened.The apparatus consists of an engraved metal cylinder and a counter-roller for the embossing step and of a heated roller, which is pressed against the ends of the embossed protrusions on the metal cylinder.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: February 3, 1981
    Assignee: Lever Brothers Company
    Inventor: Theo Schmidt