Patents Assigned to Opti-Patents-, Forschungs-und Fabrikations-AG
  • Patent number: 4334556
    Abstract: A slide fastener stringer of the woven type in which the tape has a ground weave provided with warp threads and a weft formed of double-weft passes on a needle loom. The coupling element is of the continuous, preferably coil, monofilament synthetic-resin type in which the two shanks of each coupling member are formed as a double-weft insertion connected in the weaving process with the ground weave of the tape. According to the invention, the warp sheds interwoven the double-weft of the ground weave are separate from the warp yarns interwoven with the double-weft insertions of the monofilament and are spaced or offset therefrom in a direction orthogonal to the slide fastener plane. Some warp yarns are interwoven with the double-weft of the ground weave and run over the shanks of monofilament.
    Type: Grant
    Filed: April 25, 1979
    Date of Patent: June 15, 1982
    Assignee: Opti Patent-, Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Karl Griessbaum
  • Patent number: 4181159
    Abstract: A slide-fastener stringer is formed by weaving a weft in a warp and simultaneously forming a continuous coupling element along each of the confronting edges of a pair of tapes simultaneously produced by the weaving operation. The synthetic-resin monofilament forming the coupling element is passed around a mandrel between the warp stretches so that the heads of the two coupling elements are produced in interdigitated form. The ground weft yarn is carried from the coupling element side of each set of warps through the shed to the opposite edge of the tape where it is locked into other loops of previous passes of weft by knitting.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: January 1, 1980
    Assignee: OPTI Patent-, Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Horst Ranalli
  • Patent number: 4149569
    Abstract: A weaving process and apparatus for producing a slide fastener from two continuous plastic filaments (synthetic-resin monofilament), each with a multiplicity of generally helicoidal coupling elements for interlocking with the coupling elements of the opposite filament, each filament being woven integral with the threads of its respective support tape to form a tape-like unit. Each coupling element has a coupling head on a loop and a pair of shanks terminating in bight portions which connect elements of the same tape-like unit. The shanks of each coupling element, which separate the bights from the loops, are held in close abutment by warp threads, with or without weft threads which pass over and under the successive paired abutting shanks of adjacent elements. Even stronger bracing can be obtained with bulbous projections on the shanks and bights, and by extending the coupling elements the entire width of the tape-like unit, replacing all or part of the weft threads.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: April 17, 1979
    Assignee: Opti Patent-, Forschungs- und Fabrikations-AG
    Inventor: Alfons Frohlich
  • Patent number: 4127147
    Abstract: A slide fastener comprises two continuous plastic filaments, each with a multiplicity of helicoidal coupling elements for interlocking with the elements of the opposite filament, each filament being woven integral with the threads of its respective support tape to form a single tape-like unit. Each coupling element has a coupling head on a loop end and a long shank and a short shank extending from opposite sides of the loop end. The long shank terminates in a first bight portion connecting it with a long shank of one adjacent coupling element, while the short shank terminates in a second bight portion connecting it with a short shank of another adjacent coupling element. The coupling elements are arranged in rows of mirror-image pairs, each including two long shanks and two short shanks. Warp threads are interwoven with the coupling elements, with even stronger bracing possible with bulbous projections on the long shanks, short shanks, first bight portions or second bight portions using textile weft threads.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: November 28, 1978
    Assignee: OPTI Patent- Forschungs- und Fabrikations-AG
    Inventor: Alfons Frohlich
  • Patent number: 4099302
    Abstract: A slide fastener comprises a pair of tape-like units each secured to one edge of an article whose edges are to be connected by movement of a slider along the units. Each tape-like unit comprises a row of interconnected coupling elements formed by a synthetic-resin monofilament, each coupling element having an eye or loop-shaped portion deformed to constitute the coupling head which can be received between coupling heads of the other row. From the eye-forming monofilament segments, shanks extend across the tape-like unit and are received in pockets of a multiplicity of longitudinal threads (e.g. as the weft of a weave in which the longitudinal threads form the warp, or in courses of the warp knit in which the longitudinal threads are loop chains).
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: July 11, 1978
    Assignee: OPTI Patent- Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Walter Passmann
  • Patent number: 4098299
    Abstract: A slide fastener comprises two continuous plastic filaments (synthetic-resin monofilament), each with a multiplicity of generally helicoidal coupling elements for interlocking with the coupling elements of the opposite filament, each filament being woven integral with the threads of its respective support tape to form a tape-like unit. Each coupling element has a coupling head on a loop end and a pair of shanks terminating in bight portions which connect elements of the same tape-like unit. The shanks of each coupling element, which separate the bights from the loops, are held in close abutment by warp threads, with or without weft threads which pass over and under the successive paired abutting shanks of adjacent elements. Even stronger bracing can be obtained with bulbous projections on the shanks and bights, and by extending the coupling elements the entire width of the tape-like unit, replacing all or part of the weft threads.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: July 4, 1978
    Assignee: OPTI Patent-Forschungs- und Fabrikations-AG
    Inventor: Alfons Frohlich
  • Patent number: 4084297
    Abstract: A slide fastener comprises a pair of coiled coupling rows of synthetic-resin monofilament with each coupling element having a coupling loop or eye formed with a coupling head, a pair of monofilament segments extending away from the head, and connecting shanks joining adjacent coupling elements together. The shanks are received in pockets formed by longitudinal threads which pass alternately over and under the shanks so that the longitudinal threads and the shanks form a tape-like unit or support structure. Preferably the longitudinal threads constitute a warp with the shanks acting as a weft for the tape-like unit. The coupling elements have a generally elliptical or flattened cross section whereby the coupling eye has its axis generally parallel to the major axis of the cross section of the monofilament.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: April 18, 1978
    Assignee: OPTI Patent- Forschungs- und Fabrikations-AG
    Inventors: Alfons Frohlich, Franz Hochlehnert
  • Patent number: 4078585
    Abstract: A slide fastener comprises two continuous plastic filaments, each with a multiplicity of helicoidal coupling elements for interlocking with the elements of the opposite filament, each filament being woven integral with the threads of its respective support tape to form a single tape-like unit. Each coupling element has a coupling head on a loop end and a long shank and a short shank extending from opposite sides of the loop end. The long shank terminates in a first bight portion connecting it with a long shank of one adjacent coupling element, while the short shank terminates in a second bight portion connecting it with a short shank of another adjacent coupling element. The coupling elements are arranged in rows of mirror-image pairs, each including two long shanks and two short shanks. Warp threads are interwoven with the coupling elements, with even stronger bracing possible with bulbous projections on the long shanks, short shanks, first bight portions or second bight portions using textile weft threads.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: March 14, 1978
    Assignee: OPTI Patent- Forschungs- und Fabrikations-AG
    Inventor: Alfons Frohlich
  • Patent number: 4058145
    Abstract: A slide-fastener stringer comprises, for each slide-fastener half, a support tape formed with a sewing strip and a facing strip, both having warp threads and a base weft thread extending all across both strips while a binding weft thread extends all across the sewing strip while engaging with reverse loops, the continuous coupling element which can be formed of a synthetic-resin monofilament. The monofilament may be of the helical-coil type in which each turn of the coil is formed with a coupling head adapted to fit between the coupling heads of an opposing coupling element, limbs or shanks connected to the head and connecting portions or bights connecting a limb of one head to a limb of the next head. The limbs against the support tape are provided with transverse grooves receiving an insertion thread which is woven into the tape.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: November 15, 1977
    Assignee: Opti Patent-, Forschungs- und Fabrikations AG
    Inventors: Alfons Frohlich, Julius Dahlmann, Gunter Volter
  • Patent number: 4043007
    Abstract: A support tape for a slide-fastener stringer half is knitted on a Raschel knitting machine having a pair of needle bars. This tape has a pair of longitudinally extending edges and a pair of opposite faces and is knit with an intermediate warp yarn that is spaced from the edges and knit with both needle bars to form a longitudinally extending double wale that projects on both faces of the tape and subdivides the tape transversely into an attachment strip and an edge strip. A plurality of first warp yarns in only the attachment strip are knit with one needle bar and form a plurality of longitudinally extending single wales projecting only on one face of the tape, and a plurality of second warp yarns in only the edge strip are knit with the other needle bar and form a plurality of longitudinally extending single wales projecting only on the other face of the tape. A multiplicity of weft yarns are laid into the warp yarns and each extend transversely over at least one of the wales.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: August 23, 1977
    Assignee: OPTI Patent-, Forschungs- und Fabrikations-AG
    Inventor: Helmut Heimberger