EP2245317A1 - Element de fixation pour des panneaux isolants en fibres de bois - Google Patents

Element de fixation pour des panneaux isolants en fibres de bois

Info

Publication number
EP2245317A1
EP2245317A1 EP09711653A EP09711653A EP2245317A1 EP 2245317 A1 EP2245317 A1 EP 2245317A1 EP 09711653 A EP09711653 A EP 09711653A EP 09711653 A EP09711653 A EP 09711653A EP 2245317 A1 EP2245317 A1 EP 2245317A1
Authority
EP
European Patent Office
Prior art keywords
thread
fastening element
holder
fastening
holder element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09711653A
Other languages
German (de)
English (en)
Inventor
Jürgen Renz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP2245317A1 publication Critical patent/EP2245317A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/002—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose self-cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0283—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread with an externally threaded sleeve around the neck or the head of the screw-threaded element for adjustably fastening a plate or frame or the like to a fixed element

Definitions

  • the invention relates to a fastening element for wood fiber insulation panels with the features of the preamble of claim 1.
  • Fastening elements for fastening insulation boards to a substructure are used, for example, in thermal insulation composite systems (ETICS) to fasten insulation boards to building walls.
  • ETICS thermal insulation composite systems
  • the fastening element has a fastening means and a holder element.
  • the fastening means is, for example, a screw to which the holder element is molded, and with which the fastening element and thus the insulating board to a substructure, such as a wooden beam, can be anchored.
  • the holder element is designed as insulating thread with a large outer diameter and a threaded core, which can be screwed into the insulation board. It cuts when screwing so in the insulation board that a power transmission between the insulation board and holder element is guaranteed.
  • the document EP 1 783 300 A2 shows a further fastening element with a dowel as a fastening means and a holder element.
  • the holder element is designed to be more continuous as insulating thread, wherein the threaded portions are arranged symmetrically about the threaded core.
  • the special embodiment of the insulation thread, with two radially projecting from the Gewindekem of the insulation thread threaded portions is designed for easy insertion of the holder element in the insulation.
  • the fastener is screwed into the insulation board so that the dowel is inserted into a pre-drilled in the substructure hole and jammed in it. As a result, a power transmission from the insulation board in the substructure is possible.
  • the substructure is in this case
  • Fasteners for wood fiber insulation boards are unsuitable because they are not screwed due to their trained for soft insulation material insulation thread in wood fiber insulation boards.
  • the fasteners described due to their special geometry or their manufacturing process consuming in the production and thus relatively expensive.
  • the object of the invention is therefore to propose a fastener that is easy to manufacture and suitable for wood fiber boards.
  • the fastening element according to the invention has a holder element with an insulating thread and a threaded core and a fastening means.
  • the fastening element extends along a longitudinal axis, which is also the longitudinal axis of the insulation material thread.
  • the fastener and the holder member may be rotatably connected to each other, an additional axially fixed
  • the threaded core of the holder element according to the invention has an at least by a factor of 1, 5 larger maximum outer diameter than the fastening means in its mounting region. It is meant with the attachment region of the anchoring serving part of the fastening means. This makes it easier and cheaper
  • the fastening means thus be inserted for example via a receptacle in the holder member in the longitudinal direction in the holder element and can be rotatably held by a corresponding design of the fastener and the recording in the recording.
  • the fastening means is, for example, a screw but can also be a nail, a clamping sleeve, a sieve sleeve or the like.
  • the fastening element may be formed in several parts or integrally connected to the holder element. For example, a screw with hexagonal head by a recording in the holder element in the longitudinal direction can be inserted and rotatably connected by a corresponding shape of the recording with the holder element.
  • Torque between the screw and holder element is then a corresponding remaining wall thickness of the holder element necessary.
  • the outer diameter of the thread core does not have to be constant, but it can, for example, rise counter to the insertion direction of the fastening element.
  • the maximum outer diameter of the insulation material thread is at least a factor of 1, 4 and a maximum of a factor of 2.5, in particular around the
  • the insulation thread is designed as a pointed thread and has a flank angle of 10 ° to 20 °, in particular of 15 °.
  • the insulation thread can also be performed only partially as a pointed thread. Due to the special thread form, the insertion resistance in the wood fiber insulation board is greatly reduced. A simple installation of the fastener is thus possible.
  • such a thread allows to carry out the holder element inexpensively in plastic. A high insertion resistance would produce shear loads between the flanks and the core of the insulation thread, which in a plastic holder element to a
  • the diameter of the insulation thread corresponds to a minimum of 0.6 times the length of the holder element and at most its 1, 2-fold, in particular its 0.7 to 0.9 times, length.
  • the insulating material thread of the holder element has, in a preferred embodiment, a first threaded portion which extends around half the circumference of the threaded core of the holder element extends.
  • a second threaded portion is arranged at a distance in the direction of the longitudinal axis to the first threaded portion of the insulating material thread of the holder member.
  • the distance between the two threaded portions corresponds to the thread pitch, that the threaded portions engage in the same threads in the wood fiber insulation board and do not destroy the cut into the insulation board thread.
  • the preferred distance between the end of the first threaded portion and the beginning of the second threaded portion is substantially equal to 1.0 times the thread pitch. That is, between the two threaded portions a threaded portion is omitted, which extends around the entire circumference of the thread core of the insulation material thread.
  • a preferred embodiment has an insulation thread with an outer diameter, which increases from the front first end pointing in the insertion direction in the insulation board towards the rear second end.
  • Embodiment with a substantially cylindrical Gewindekem means that the radial extent of the thread flanks of the individual threaded portions from the first front end of the insulation thread increases toward the second rear end. This ensures that, in particular, the threaded sections at the rear end contribute to the load-bearing capacity of the holder element. In addition, this means that the attached at the front end threaded portions have a smaller radial extent, that a threaded portion of the subsequent threaded portion pre-cuts a portion of thread in the wood fiber insulation board and therefore the insertion resistance of the holder member throughout the driving remains uniformly low. This is additionally supported by the fact that the radial extent of a
  • Thread section preferably from its front in the insertion direction beginning to its rear end in the insertion direction, ie counter to the insertion direction, increases.
  • the threaded portion ends with a radial edge extending to the thread core of the insulation material thread.
  • the fastening element has an end face at its rear end in the insertion direction.
  • the end face is arranged on the holder element.
  • the end face is, for example, circular.
  • it has an outer diameter which is at least as large as the maximum outer diameter of the insulation material thread.
  • the end face prevents the fastener from getting too far into the insulation board is introduced. It also covers the opening into which the fastener was inserted. If the end face is not circular, the outside diameter is the diameter of a circle circumscribing the end face.
  • the holder element is made of thermally insulating
  • the holder element preferably has a receptacle for a closure element.
  • the closure element acts as a thermal insulation against the screw.
  • the closure element may be designed such that it fixes the fastening means in the direction of the longitudinal axis of the fastening element.
  • the closure element may have a receptacle for a tool, for example for a screw bit.
  • Figure 1 shows a first inventive fastener for
  • Figure 2 shows a second inventive fastener for
  • Figure 3 shows a third inventive fastener for
  • Figure 4 shows a fourth inventive fastener for wood fiber insulation panels in a perspective sectional view.
  • FIG. 1 shows a first fastening element 1 according to the invention with a holder element 2, a fastening means 3 and a closure element 4.
  • the fastening means 3 in this case is a screw 5 with a point 6 pointing into the insertion direction, a threaded area 7 with a screw thread 8
  • the holder element 2 is designed as an injection molded part in plastic, with a
  • the insulation thread 13 is designed as a pointed thread with a flank angle ⁇ of 15 °.
  • the Gewindekem 14 of the holder member 2 has a by a factor of 1, 5 larger maximum outer diameter D ⁇ than that
  • Fixing means 3 having a maximum outer diameter D B in the fastening area of the screw 5. Moreover, the maximum outer diameter D D of the insulating thread 13 by a factor of 1, 5 is larger than the maximum outer diameter D ⁇ of the threaded core 14 of the holder element 2. The maximum outer diameter D D of the Insulating material thread 13 corresponds to 0.75 times the length L H of the holder element 2.
  • the holder element 2 terminates at its rear end 18 in the insertion direction with a radially outwardly extending end face 19, which is circular in shape, and an outer diameter D 1 - has, which corresponds to the maximum outer diameter D D of the insulating thread 13.
  • the receptacle 12 completely penetrates the holder element along its longitudinal axis and is formed in its rear region in the insertion direction as a hexagon socket, so that the introduced screw 5 with hexagonal head 10 is non-rotatably connected to the holder element 2.
  • the hexagon socket can be designed so that the receptacle 12 is also usable as a tool holder.
  • the receptacle 12 In its front region, the receptacle 12 is designed as a bore whose diameter corresponds to the maximum outer diameter D B of the fastening means 3 in the attachment region. Due to the ratio of the maximum outer diameter D ⁇ of the threaded core 14 of the insulating material thread 13 to the maximum outer diameter D B of the fastening means 3, a sufficiently large wall thickness t of the holder element 2 is present. Due to the special design of the insulation material thread 13, the fastener can be
  • the fastener 1 relatively easy and easy to screw in a wood fiber insulation board, not shown.
  • the wood fiber insulation board can be glued to a substructure or even just be laid.
  • the fastener 1 is designed for example for a substructure made of wood.
  • the holder member 2 is by screwing in the Screw 5 led to Holzfaserdämmplatte out, so in the insertion. Due to the rotationally fixed connection of the holder element 2 and the screw 5, the insulation thread 13 of the holder element 2 also rotates in the wood fiber insulation board. The thread pitch in the screw 5 corresponds to the thread pitch of the insulation material thread 13, whereby the screw 5 and the holder element 2 with the same
  • the thread pitch of the holder member 2 is slightly smaller than the thread pitch of the screw 5, which ensures that when screwing the fastener 1, the insulation board is clamped against the substructure, since the screw thread 8 per revolution in the axial direction continues to move As soon as the end face 19 bears against the outside of the insulation board, the torque necessary for screwing in the fastening element 1 increases, whereby the setting process is terminated.
  • a fastener according to the invention can also be used for fastening further insulating materials, the like
  • the holder element 2 is made of plastic.
  • the receptacle 12 can be closed by a closure element 4 before or after assembly of the fastening element 1.
  • the closure element 4 shown has for locking in the receptacle 12 rectangular locking elements 20 which are in grooves
  • the closure element 4 also has a second tool holder 22. Due to the special geometry of the holder element 2 very high holding forces can be realized. In addition, the fastener 1 is easy to manufacture and thus inexpensive.
  • Figure 2 shows a fastener 1 'with a holder element 2' and a screw 5 'as a fastening means 3', which engages in a dowel 23, for example, for anchoring in a concrete wall, not shown.
  • the holder element 2 ' has no closure element and no end face.
  • the insulation material thread 13 ' has a plurality of threaded portions 24, each about half the circumference of the
  • Two threaded sections 24 each are arranged at a distance in the direction of the longitudinal axis of the fastening element V.
  • the distance a in the direction of the longitudinal axis between the end of a first threaded portion 25 and the beginning of a second, following in screwing, threaded portion 26 corresponds to a thread pitch of the insulation material thread 13 '.
  • the insulating thread 13 ' has an outer diameter which increases from its first end 15 to its second end 18.
  • the individual threaded portions 24 take in their radial extent from the beginning of the threaded portion 24 to the end of the threaded portion 24, ie against the screwing towards.
  • the threaded portions 24 terminate at their end with a radially to the threaded core 14 of the insulation material thread 13 'extending edge 27.
  • Fastening element 1 ' has no pronounced end face, it is possible to secure the holder element 2' sunk in a wood fiber insulation board, not shown.
  • the screw 5 ' has no tool holder. Therefore, the receptacle 12 of the holder member 2 'serves as a tool holder.
  • the screw 5 "of the fastening element 1" engages in a dowel 23 ".”
  • a tubular, cylindrical section 28 adjoins the retaining element 2 ", which is designed so that its outside diameter fits into the inward-facing Insertion direction rear portion 29 of the dowel 23 "telescopically inserted .
  • the tubular portion 28 protects the screw 5 in front
  • Dowel 23 '"on For mounting an insulating board with the fastener 1'" is first introduced a holes through the insulation board in the substructure.
  • the substructure is for example a concrete.
  • the nominal diameter of the bore corresponds to the nominal diameter of the plug 23 ".”
  • the fastening element 1 is introduced in such a way that first the plug 23 '"is inserted into the bore.
  • this non-rotatable connection is made via a predetermined breaking point, which is designed such that it can transmit the torque necessary for screwing in the holder element 2 '"into the insulating panel
  • Torque for example, when the holder element 2 '"rests against the substructure fails, the predetermined breaking point, so that no rotationally fixed connection between the holder element 2'" and screw 5 '"is longer present ..
  • the screw 5'" is then in the dowel 23rd '"screwed, which is thereby spread and fixed in the substructure.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L’invention concerne un élément de fixation (1) pour des panneaux isolants en fibre de bois comprenant un élément de maintien (2), présentant un filetage isolant (13) et un fond de filet (14), et un moyen de fixation (3). Pour obtenir un élément de fixation (1) facile à fabriquer et adapté aux panneaux isolants en fibres de bois, l’invention propose que le fond de filet (14) de l’élément de maintien (2) présente un diamètre extérieur (Dκ) au moins 1,5 fois supérieur au moyen de fixation (3) et que le diamètre extérieur maximum (DD) du filetage isolant (13) soit au moins 1,4 fois et au plus 2,5 fois, notamment 1,4 à 1,75 fois, supérieur au diamètre extérieur (Dκ) du fond de filet (14) de l’élément de maintien (2).
EP09711653A 2008-02-22 2009-01-21 Element de fixation pour des panneaux isolants en fibres de bois Withdrawn EP2245317A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810010606 DE102008010606A1 (de) 2008-02-22 2008-02-22 Befestigungselement für Holzfaserdämmplatten
PCT/EP2009/000347 WO2009103391A1 (fr) 2008-02-22 2009-01-21 Elément de fixation pour des panneaux isolants en fibres de bois

Publications (1)

Publication Number Publication Date
EP2245317A1 true EP2245317A1 (fr) 2010-11-03

Family

ID=40385505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09711653A Withdrawn EP2245317A1 (fr) 2008-02-22 2009-01-21 Element de fixation pour des panneaux isolants en fibres de bois

Country Status (3)

Country Link
EP (1) EP2245317A1 (fr)
DE (1) DE102008010606A1 (fr)
WO (1) WO2009103391A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007058773A1 (de) 2007-12-06 2009-06-10 Fischerwerke Gmbh & Co. Kg Dämmstoffhalter
DE102010027912A1 (de) * 2010-04-19 2011-10-20 Reisser Schraubentechnik Gmbh Befestigungselement
EP2666919B1 (fr) * 2012-05-22 2015-12-16 RANIT-Befestigungssysteme GmbH Procédé et système de fixation pour le montage de plaques d'isolant sur une surface de support
DE102013200682A1 (de) * 2013-01-17 2014-07-17 Adolf Würth GmbH & Co. KG Integraler Spenglerschraubendübel und zugehörige Handlochstanze mit Stanzabstandseinstellfunktion
EP2784243B1 (fr) * 2013-03-28 2021-08-11 RANIT-Befestigungssysteme GmbH Procédé permettant de monter une plaque d'isolant sur un mur
PL2878739T3 (pl) * 2013-12-02 2018-02-28 Ranit-Befestigungssysteme Gmbh Uchwyt materiału izolacyjnego do mocowania płyt izolacyjnych na podłożu
EP3150773B1 (fr) 2015-10-02 2024-01-31 URSA Insulation, S.A. Procédé amélioré de fixation d'un élément d'isolation pour un élément de structure d'un bâtiment et dispositif de fixation d'espacement approprié pour être utilisé dans un tel procédé

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441024B (sv) * 1983-10-04 1985-09-02 Essve Forseljnings Ab Anordning for reglerbar infestning av dorr- eller fonsterkarmar
DE4426957C2 (de) * 1993-06-25 1998-08-06 Alfons Knoche Verfahren zum Herstellen einer Distanzschraube für die Durchsteckmontage
DE29509487U1 (de) * 1995-06-09 1995-08-24 Upat Gmbh & Co, 79312 Emmendingen Halteelement zum Befestigen eines Gegenstandes an einer Leichtbaustoffwand
DE19931794C2 (de) * 1999-07-08 2003-10-02 Tox Duebel Werk Isolierdübel
EP1184577A1 (fr) * 2000-09-01 2002-03-06 Pro-Visa Int'l Corp. Dispositif de fixation à vis, à manchon d'ancrage muni d'un filetage extérieur
DE20320553U1 (de) * 2002-09-19 2004-09-30 Holzinger, Alois, Sen. Einrichtung zur distanzierten Befestigung von Wärmedämmplatten an Wänden oder Decken
US7934895B2 (en) * 2003-10-10 2011-05-03 Illinois Tool Works Inc. Self-drilling anchor
US7261505B2 (en) * 2004-09-10 2007-08-28 Illinois Tool Works Inc. Self-drilling anchor
US7144212B2 (en) * 2004-12-02 2006-12-05 Mechanical Plastics Corp. Self-drilling hollow wall anchor
DE102004062151A1 (de) 2004-12-23 2006-07-13 Fischerwerke Artur Fischer Gmbh & Co. Kg Befestigungselement für Dämmstoffplatten
DE102005000147A1 (de) 2005-11-02 2007-05-03 Hilti Ag Befestigungselement für die Befestigung von Dämmstoffplatten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009103391A1 *

Also Published As

Publication number Publication date
WO2009103391A1 (fr) 2009-08-27
DE102008010606A1 (de) 2009-08-27

Similar Documents

Publication Publication Date Title
EP2213888B1 (fr) Support pour matière isolante
EP1724412B1 (fr) Espaceur et procédé pour fixer un article sur un support muni d'une couche d'isolation extérieure
EP2092201B1 (fr) Cheville à insertion arrière dans une plaque de recouvrement
EP3044468B1 (fr) Hélice pour insert fileté
EP2082141B1 (fr) Cheville à expansion pour insertion dans une plaque de recouvrement
EP2245317A1 (fr) Element de fixation pour des panneaux isolants en fibres de bois
EP0292742B1 (fr) Vis d'écartement
DE102004064114B4 (de) Befestigungselement für Dämmstoffplatten
EP1235988B1 (fr) Vis pour fixer avec un ecart, des panneaux de recouvrement ou des rails sur une infrastructure
DE29502068U1 (de) Schraube, insbesondere für Fensterprofile aus Kunststoff
EP3033533B1 (fr) Vis à béton
EP1582684B1 (fr) Vis pour la fixation de profilés creux en matière plastique renforcés par des profilés métalliques sur une structure de support
EP4459138B1 (fr) Ancrage pour matériau isolant
EP3974667A1 (fr) Vis à double filetage et système de fixation pourvu de ladite vis à double filetage
EP0464194A1 (fr) Vis de fixation de materiaux elastiques a une couche de support susceptible d'etre endommagee par le filetage
DE102013103287A1 (de) Dämmstoffhalter
EP2784243B1 (fr) Procédé permettant de monter une plaque d'isolant sur un mur
EP2251555A1 (fr) Cheville
DE3611873A1 (de) Befestigungselement zum verstellbaren befestigen von bauelementen an bauwerken
EP2278172B1 (fr) Dispositif de fixation d'un élément de construction dans un espacement
EP2878739B1 (fr) Support d'isolation pour la fixation de plaques isolantes sur substrat
WO2015110376A1 (fr) Procédé de fabrication d'un système de fixation, système de fixation et vis destiné à celui-ci
EP2455562A1 (fr) Vis destinée à la fixation d'un panneau d'isolation thermique et habillage de panneau d'isolation thermique
WO2013163772A1 (fr) Vis pour matériaux de construction légers
EP4459137B1 (fr) Ancrage pour matériau isolant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100705

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120801