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US20060006002A1 - Working tool for machining mineral constructional components - Google Patents

Working tool for machining mineral constructional components Download PDF

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Publication number
US20060006002A1
US20060006002A1 US11/170,672 US17067205A US2006006002A1 US 20060006002 A1 US20060006002 A1 US 20060006002A1 US 17067205 A US17067205 A US 17067205A US 2006006002 A1 US2006006002 A1 US 2006006002A1
Authority
US
United States
Prior art keywords
working tool
carrier body
machining
unalloyed
carbon content
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.)
Abandoned
Application number
US11/170,672
Other languages
English (en)
Inventor
Peter Mugg
Till Cramer
Stefanie Tschegg
Herwig Mayer
Bernd Zettl
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of US20060006002A1 publication Critical patent/US20060006002A1/en
Assigned to HILTI AKTIENGESELLSCHAFT reassignment HILTI AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TSCHEGG, STEFANIE, ZETTL, BERND, CRAMER, TILL, MAYER, HERWIG, MUGG, PETER
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B37/00—Boring by making use of ultrasonic energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/028—Circular saw blades of special material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • B24D5/123—Cut-off wheels having different cutting segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/146—Tools therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/84—Steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/75—Stone, rock or concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/50—Drilling tools comprising cutting inserts

Definitions

  • the present invention relates to a working tool for machining mineral constructional components, mineral foundations, and the like, in particular, for machining with an ultrasonic tool, and having a carrier body provided with at least one cutting element.
  • Mineral constructional components, mineral foundations, and the like and foundations, and the like are subjected to drilling, cutting, grinding with suitable power tools such as, e.g., drilling tools, cutting or grinding tools, etc. Both hand-held tools and column-guided tools are used.
  • German Publication DE 44 26 238 A1 discloses forming a carrier body for a working tool, e.g., a bit body for a core drilling bit of an unalloyed constructional steel with a carbon content less than 0.2% (e.g., of S235JR, material No. 1.0037 (European standard EN 10025, corresponds to steel A252-02 (ASTM)).
  • This material provides for an economical manufacturing of core drilling bit and has good welding characteristics.
  • these core drilling bits are not suitable for an ultrasonic drilling because the produced ultrasonic oscillations are strongly attenuated by an unalloyed constructional steel, which leads to an inefficient machining process and excessive heating of the core drilling bit, resulting in a reduced fatigue strength of the core drilling bit.
  • German Patent DE 42 07031 C2 suggests to use a chromium-nickel steel.
  • This material has very good characteristics, which makes it suitable for ultrasonic machining.
  • this material is in 3-5 times more expensive than an unalloyed constructional steel.
  • Another material that has very good characteristics for an ultrasonic machining is a titanium alloy which, however, is also much more expensive than an unalloyed constructional steel. Therefore, from an economical point of view, neither chromium-nickel steel nor titanium alloy is suitable for manufacturing of single-use working tools.
  • an object of the present invention is to provide a tool for machining mineral constructional components, mineral foundations, and the like that can be used with conventional power tools and, at the same time, has good characteristics for use with an ultrasonic tool, and that can be economically produced.
  • the costs of an unalloyed hardened steel with a carbon content from 0.2% to 0.8% are only slightly higher than the costs of a conventional unalloyed constructional steel.
  • a working tool the carrier body of which is formed of an alloyed hardened steel with a carbon content from 0.2% to 0.8% has a small material-dependent attenuation of the ultrasonic oscillations and, as a result, an increased fatigue strength.
  • the unalloyed hardened steel with a carbon content from 0.2% to 0.8% has good welding properties and machinability.
  • Working tools which have a carrier body formed of an unalloyed hardened steel with a carbon content from 0.2% to 0.8%, can be used with both conventional power tools and ultrasonic tools.
  • the working tools the carrier body of which is formed of an un alloyed hardened steel with a carbon content from 0.2% to 0.8%, not only have a smaller attenuation of ultrasonic oscillations and an increased fatigue strength in comparison with tools from un alloyed constructional steel, but also require less power for generation of the ultrasonic oscillations.
  • the working tools which have a carrier body formed of an un alloyed hardened steel with a carbon content from 0.2% to 0.8%, have, because of a reduced material fatigue, a reduced probability of failure, so that with a probability of fracture the same as with the tools the carrier body of which is formed of an alloyed constructional steel, the inventive working tools can operate with an elongation (expansion) amplitude greater by up to 80% than the tool the carrier body of which is formed of an unalloyed constructional steel.
  • the carrier body is formed of an unalloyed hardened steel with a carbon content in a range from 0.5% to 0.7%, advantageously 0.6%.
  • a suitable unalloyed hardened steel can be, e.g., steel “C60E” (material No. 1.1221, European standard EN 10297-1 corresponding to AISI 1060), which has a carbon content from 0.57% to 0.65%.
  • the working tool is formed as a core drilling bit having a hollow cylindrical bit body that forms the carrier member.
  • core drilling bits are used, in particular, for drilling holes in a reinforced concrete.
  • a shank for connecting the core drilling bit with a power drilling tool.
  • cutting elements such as, e.g., sintered diamond segments or cutters of hard metal, and which serve as machining elements. The machining process is effected by rotation of the core drilling bit with a power drilling tool.
  • exchange modules are used, which are provided with cutting elements.
  • An exchange module has a hollow cylindrical bit body section that forms the carrier body and is provided at its first end with a connection surface for connection the bit body section with the hollow cylindrical bit body, and at its second, opposite end is equipped with cutting elements.
  • the hollow cylindrical bit body section is also formed of an unalloyed hardened steel with a carbon content from 0.2% to 0.8%.
  • the inventive working tool is formed as a drill the stem of which forms the carrier body.
  • Such drills are used for drilling bores, with the stem being provided with a shank at its first end for connecting the drill with a power drilling tool, and having, at its other opposite end, at least one cutting element that forms the machining element.
  • the at least one cutting element can be formed of a hard metal plate or as a drilling head, with the hard metal plate or drilling head being fixedly secured at the second end.
  • the stem is provided on its outer circumference with at least one helical groove for removing the drilling cuttings, so that the drillings or drilling dust, which are produced during a drilling process, are removed.
  • the stem is provided with a longitudinal bore through which a rinsing fluid is fed to the at least one cutting element during the drilling process, or through which drillings or drilling dust, which are produced during a drilling process, can be aspirated from the drilling bore.
  • the inventive working tool is formed as a cutting disc with a disc-shaped carrier body.
  • Such cutting discs are used for cutting the constructional components, mineral foundations, and the likeand foundations, and the likeor for forming slots therein.
  • the cutting disc has a through-opening for mounting the cutting disc on a drive shaft of a power tool.
  • cutting elements such as, e.g., as sintered diamond segments or cutters having a predetermined shape and formed of a hard metal. The diamond segments or cutters form machining elements.
  • the inventive working tool is formed as a grinding disc having a substantially disc-shaped carrier body.
  • Such grinding discs are used for machining, grinding, flat surfaces of constructional components.
  • the substantially disc-shaped carrier body has a through-opening for mounting of the grinding disc on a drive shaft of a power tool, and is provided on its bottom with grinding elements, e.g., sintered diamond segments which form the grinding elements.
  • FIG. 1 a longitudinal cross-sectional view of a working tool according to the present invention formed as a core drilling bit;
  • FIG. 2 a longitudinal cross-sectional view of another embodiment of a working tool according to the present invention also formed as a core drilling bit;
  • FIG. 3 a longitudinal cross-sectional view of a working tool according to the present invention formed as a drill
  • FIG. 4 a plan view of a working tool according to the present invention formed as a cutting disc
  • FIG. 5 a plan view of a working tool according to the present invention formed as a grinding disc
  • FIG. 6 a diagram illustrating attenuation behavior of different materials at two different characteristics of ultra-sound.
  • a working tool according to the present invention which is formed as a core drilling bit 11 and is shown in FIG. 1 , has a hollow cylindrical bit body 12 that serves as a carrier body and is formed of an unalloyed hardened steel with a carbon content from 0.2% to 0.8%, e.g., of C60 E.
  • the core drilling bit 11 has a first end 13 with a shank 15 for connecting the core drilling bit 11 with a drilling tool (not shown), and a second opposite end 14 provided with cutting elements 16 which serve as machining elements.
  • a replaceable exchange module 30 having a hollow cylindrical bit body section 27 that serves as a carrier body and is formed of an alloyed hardened steel with a carbon content from 0.2% to 0.8%.
  • the bit body section 27 has a first end 28 that is formed as a connection surface for connecting the bit body section 27 to the bit body 22 of the core drilling bit 21 , and a second, opposite end 29 provided with cutting elements 26 which serve as machining elements.
  • the exchange module 30 is connected with the hollow cylindrical bit body 22 by a weld seam 31 or, alternatively, can be connected by a solder seam.
  • the exchange module 30 can be separated from the bit body 20 upon wear of the cutting elements 26 and be replaced with a new exchange module with new cutting elements 26 .
  • a working tool according to the present invention is formed as a drill 36 having a stem 37 which serves as a carrier body and is formed of an unalloyed hardened steel with a carbon content from 0.2% to 0.8%, e.g., of C60E steel.
  • the stem 37 is provided at its first end 38 with a shank 40 for connecting the drill 36 with a drilling tool (not shown).
  • the stem 37 is provided with a cutting element 41 that is formed a hard metal plate and serves as a machining element.
  • the stem 37 is provided with helical grooves 42 on its circumference.
  • a working tool according to the present invention which is shown in FIG. 4 , is formed as a cutting disc 46 having a disc-shaped carrier body 47 formed of unalloyed hardened steel with a carbon content from 0.2% to 0.8%.
  • the disc-shaped carrier body 47 has a through-opening 48 for mounting the cutting disc 46 on a drive shaft of a power tool (not shown).
  • a plurality of cutting elements 49 which serve as machining elements, is provided on the outer circumference of the disc-shaped carrier body 47 .
  • a working tool according to the present invention which is shown in FIG. 5 , is formed as a grinding disc 56 having a substantially disc-shaped carrier body 57 formed of an unalloyed hardened steel with a carbon content from 0.2% to 0.8%.
  • the disc-shaped carrier body 57 has a through-opening 58 for mounting the grinding disc 56 on a drive shaft of a power tool (not shown).
  • On the bottom 60 of the disc-shaped carrier body 57 there are provided a plurality of grinding elements 59 .
  • diagram of FIG. 6 shows temperature rise of different materials at two different amplitudes.
  • the left column of each column pair shows the temperature rise when the material sample is loaded for 2 min at elongation ( ⁇ ) of 0.3 ⁇ 10 ⁇ 3 at an amplitude of 12 ⁇ m.
  • the right column of each column pair shows the temperature rise when the material sample is loaded during 1 min at elongation (E) of 0.5 ⁇ 10 ⁇ 3 at an amplitude of 20 ⁇ m.
  • the first column pair show results for a material sample of a titanium alloy (Ti 6 Al 4 V) which is used as a reference material and has a very small temperature under a respective ultrasonic load.
  • the small temperature rise of the titanium alloy corresponds to a small material-dependent attenuation of ultrasonic waves.
  • the second column pair shows, in comparison, the results for a material sample form an unalloyed constructional steel (S235JR) which is conventionally used for manufacturing of carrier bodies of the working tools and which has a high temperature rise at a respective ultrasonic load.
  • the very high temperature rise corresponds to a large material-dependent attenuation of the ultrasonic waves.
  • the third column pair shows results for a material sample of an unalloyed hardened steel (C60E) which is used for manufacturing of the carrier body of a working tool according to the present invention.
  • the temperature rise of this material sample under the respective ultrasonic load is only slightly greater than of the titanium alloy (first column pair) but is substantially smaller than of the unalloyed constructional steel (second column pair).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Drilling Tools (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US11/170,672 2004-06-30 2005-06-29 Working tool for machining mineral constructional components Abandoned US20060006002A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004031600.7 2004-06-30
DE102004031600A DE102004031600B4 (de) 2004-06-30 2004-06-30 Werkzeug zur Bearbeitung eines mineralischen Untergrundes mit einem Ultraschall-Werkzeuggerät

Publications (1)

Publication Number Publication Date
US20060006002A1 true US20060006002A1 (en) 2006-01-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/170,672 Abandoned US20060006002A1 (en) 2004-06-30 2005-06-29 Working tool for machining mineral constructional components

Country Status (4)

Country Link
US (1) US20060006002A1 (de)
EP (1) EP1612018B1 (de)
JP (1) JP2006015481A (de)
DE (1) DE102004031600B4 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080141517A1 (en) * 2006-12-19 2008-06-19 Airbus Uk Limited Method and system for making holes in composite materials
US20220072630A1 (en) * 2015-12-08 2022-03-10 Milwaukee Electric Tool Corporation Hole Saw with Open End Cap Geometry
US11465261B1 (en) * 2021-09-03 2022-10-11 Dixie Diamond Manufacturing, Inc. Reciprocal segment abrasive cutting tool
US20230211428A1 (en) * 2020-12-22 2023-07-06 Tatsuno Sawing Dr. Company Tip saw
US12251792B2 (en) * 2021-09-03 2025-03-18 Dixie Diamond Manufacturing, Inc. Reciprocal segment abrasive cutting tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219232A1 (de) * 2012-10-22 2014-04-24 Sauer Ultrasonic Gmbh Vibrierendes Werkzeug, Verfahren zur Werkzeugkonstruktion
DE102016225458A1 (de) * 2016-12-19 2018-06-21 Robert Bosch Gmbh Ultraschallbohrwerkzeug
EP4015120A1 (de) * 2020-12-15 2022-06-22 Hilti Aktiengesellschaft Verfahren zum austauschen der bohrsegmente einer bohrkrone und schneidabschnitt für eine bohrkrone

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579373A (en) * 1968-10-18 1971-05-18 Vernon J Pingel Carbiding
US4232096A (en) * 1976-12-17 1980-11-04 Uddeholms Aktiebolag Composite steel material and composite steel tool made from this material
US4704055A (en) * 1983-02-08 1987-11-03 Gottlieb Guhring Drill with cooling channel
US5733074A (en) * 1994-12-16 1998-03-31 Hilti Aktiengesellschaft Manual tool for removing material from brittle and/or non-ductile stock

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7411770U (de) * 1974-07-11 Kramp G Flächenbearbeitungswerkzeug für harte Werkstoffe
GB961449A (en) * 1962-03-19 1964-06-24 Ass Elect Ind Improvements relating to drills
EP0358615A1 (de) * 1988-09-06 1990-03-14 Cimline, Inc. Diamant-Sägeblatt
DE4207031C2 (de) * 1992-03-06 2002-02-07 Schubert & Salzer Control Syst Vorrichtung zur Strömungsmessung abrasiver Teilchen in Fluiden in einer Leitung
JPH06339865A (ja) * 1992-02-28 1994-12-13 Nikon Corp 超音波研削用カップ砥石及びこれを用いた 超音波研削加工機
DE4426238C2 (de) * 1994-07-23 1997-04-10 Peter Dipl Ing Maerzheuser Bohrkrone zum Kernbohren
JP2876191B2 (ja) * 1995-06-28 1999-03-31 大阪ダイヤモンド工業株式会社 ダイヤモンドワイヤーソー
ATE172253T1 (de) * 1995-06-30 1998-10-15 Picard Fa Carl Aug Stammblatt einer säge, wie einer kreis- oder gattersäge, einer trennscheibe, einer schneide- oder einer schabvorrichtung
DE19757271A1 (de) * 1997-12-22 1999-06-24 Hilti Ag Werkzeug
US20030075163A1 (en) * 2000-07-27 2003-04-24 Sherman Michael M. Saw blade with polycrystalline tips

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579373A (en) * 1968-10-18 1971-05-18 Vernon J Pingel Carbiding
US4232096A (en) * 1976-12-17 1980-11-04 Uddeholms Aktiebolag Composite steel material and composite steel tool made from this material
US4704055A (en) * 1983-02-08 1987-11-03 Gottlieb Guhring Drill with cooling channel
US5733074A (en) * 1994-12-16 1998-03-31 Hilti Aktiengesellschaft Manual tool for removing material from brittle and/or non-ductile stock

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080141517A1 (en) * 2006-12-19 2008-06-19 Airbus Uk Limited Method and system for making holes in composite materials
US8197162B2 (en) 2006-12-19 2012-06-12 Airbus Operations Limited Method and system for making holes in composite materials
US20220072630A1 (en) * 2015-12-08 2022-03-10 Milwaukee Electric Tool Corporation Hole Saw with Open End Cap Geometry
US20230211428A1 (en) * 2020-12-22 2023-07-06 Tatsuno Sawing Dr. Company Tip saw
US11465261B1 (en) * 2021-09-03 2022-10-11 Dixie Diamond Manufacturing, Inc. Reciprocal segment abrasive cutting tool
US12251792B2 (en) * 2021-09-03 2025-03-18 Dixie Diamond Manufacturing, Inc. Reciprocal segment abrasive cutting tool

Also Published As

Publication number Publication date
DE102004031600A1 (de) 2006-01-19
DE102004031600B4 (de) 2006-04-20
EP1612018A1 (de) 2006-01-04
EP1612018B1 (de) 2013-09-18
JP2006015481A (ja) 2006-01-19

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Owner name: HILTI AKTIENGESELLSCHAFT, LIECHTENSTEIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MUGG, PETER;CRAMER, TILL;TSCHEGG, STEFANIE;AND OTHERS;REEL/FRAME:017602/0909;SIGNING DATES FROM 20050616 TO 20050720

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION