Patents by Inventor Lorenz Schnitzler

Lorenz Schnitzler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9009899
    Abstract: An arrangement for supporting a brace transversely to the longitudinal extent thereof in the vicinity of the anchorage of a structure having a cavity pipe, an adapter ring, a tubular or annular supporting element which has a second axially loadable support surface, which is arranged concentrically in relation to the second axially loadable bearing surface of the adapter ring and of which the opening, which encircles a third longitudinal axis, forms a supporting surface for the brace by way of its inner circumference, wherein the opening has an amount of eccentricity E2 in relation to the second axially loadable support surface of the supporting element, and having a fastenor which clamps the cavity pipe, the adapter ring and the supporting element together axially in position relative to one another.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: April 21, 2015
    Assignee: Dywidag-Systems International GmbH
    Inventors: Lorenz Schnitzler, Werner Brand, Andreas Maerzluft, Egbert Zimmermann
  • Publication number: 20140115984
    Abstract: An arrangement for supporting a brace transversely to the longitudinal extent thereof in the vicinity of the anchorage of a structure having a cavity pipe, an adapter ring, a tubular or annular supporting element which has a second axially loadable support surface, which is arranged concentrically in relation to the second axially loadable bearing surface of the adapter ring and of which the opening, which encircles a third longitudinal axis, forms a supporting surface for the brace by way of its inner circumference, wherein the opening has an amount of eccentricity E2 in relation to the second axially loadable support surface of the supporting element, and having a fastenor which clamps the cavity pipe, the adapter ring and the supporting element together axially in position relative to one another.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 1, 2014
    Applicant: DYWIDAG-SYSTEMS INTERNATIONAL GMBH
    Inventors: Lorenz SCHNITZLER, Werner BRAND, Andreas MAERZLUFT, Egbert ZIMMERMANN
  • Patent number: 6055691
    Abstract: A method of mounting and tensioning a freely tensioned tension member, particularly a stay cable for a cable-stayed bridge, and a device for carrying out the method, wherein the polyethylene casing of each individual strand is removed during the tensioning process over the length of the extension distance occurring during tensioning at the tensioning end. The peeling tool of the device for carrying out the method is composed of a sleeve having at one end thereof at least one cutting edge, wherein the sleeve surrounds the respective strand over at least an essential portion of the circumference thereof. The sleeve can be positioned in a stationary manner between the anchoring disk and the tensioning press, wherein the strand is pulled through the sleeve during the tensioning process.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: May 2, 2000
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventors: Oswald Nutzel, Dieter Jungwirth, Lorenz Schnitzler
  • Patent number: 5437526
    Abstract: An anchoring arrangement for use in underground mining or foundation work or as a reinforcing element for concrete includes a rod-shaped tension member of composite fiber material which has, over at least an anchoring portion thereof, a helically extending external thread with ribs formed by impressing valleys in the tension member. An anchoring member having a corresponding internal thread can be screwed onto the tension member. For obtaining a radial pressure on the tension member as a result of a wedge effect, the angle of inclination of the sides of the thread relative to the longitudinal axis of the tension member is smaller than 45.degree.. The thread preferably is a fiat trapezoidal thread. In an anchoring member which is stiff relative to circumferential tensile forces, the flat angle of inclination of the sides of the thread increases the radial pressure acting on the tension member, which leads to an increased effect into the depth and a higher resistance to shearing.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: August 1, 1995
    Assignees: Dyckerhoff & Witmann Aktiengesellschaft, Rochling Haren KG
    Inventors: Thomas Herbst, Berthold Bolmer, Hartmut von Grolman, Anton Lugering, Lorenz Schnitzler
  • Patent number: 4971493
    Abstract: An anchoring device for a tension member of an earth- or rock anchor, where a support element transmitting the tensile force is arranged between an anchoring element undisplaceably connected with the tension member and an anchor plate abuttable against a support base, the support element includes a cylindrical hollow body surrounding the anchoring element, whose inner wall has in its lower region projections protruding inward beyond its inner contour, against which the anchoring element abuts in a force-transmitting manner with partial regions of its cross-sectional area. If a predetermined tensile force is exceeded, the support element and/or the anchoring element can plastically deform in the region of their inter-engaging surfaces, so that a relative displacement occurs in axial direction.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: November 20, 1990
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventors: Thomas Herbst, Lorenz Schnitzler
  • Patent number: 4904122
    Abstract: An anchoring device, such as a rock anchor, includes an anchor rod with force transmission ribs projecting outwardly from its outside surface. An anchor nut is in threaded engagement with the rod and has at least an axially extending portion formed of a material having lesser strength than the material of the rod. The anchor nut has at least two axially extending portions spaced apart by cuts through the nut, which cuts extend transversely of the nuts central axis. The portions follow one another in the central axis direction with at least the portion closer to the body into which the anchor rod extends having the lesser strength. The nut portions are dimensioned so that the portion closer to the body loses its force locking engagement with the ribs on the rod and its threads shear off when a predetermined load is exceeded. The nut portions are interconnected by narrow webs remaining after the cuts are made in the nut separating the portions.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: February 27, 1990
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventors: Thomas Herbst, Lorenz Schnitzler
  • Patent number: 4469756
    Abstract: To form a radially outwardly extending bulge in a steel wire strand made up of a plurality of individual wires, the strand is compressed along an axial length so that the individual wires deform radially outwardly and in spaced relation to one another. Compressive force is applied to one end of the strand and the strand is anchored at an axially spaced location from the end. A tubular member with a cylindrically shaped inside surface forms a limiting boundary for the outward movement of the individual wires. The tubular member is located between the end of the strand and the location where it is anchored. The end of the strand and the tubular member are rotatably supported. Each individual wire extends along an angular path about the axis of the strand between the end of the strand and the anchor location.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: September 4, 1984
    Assignee: Dyckerhoff & Widmann Aktiengesellschaft
    Inventors: Dieter Jungwirth, Lorenz Schnitzler, Alto Mannhart, Johann Wlodkowski