DE3882520D1 - - Google Patents

Info

Publication number
DE3882520D1
DE3882520D1 DE88119262T DE3882520T DE3882520D1 DE 3882520 D1 DE3882520 D1 DE 3882520D1 DE 88119262 T DE88119262 T DE 88119262T DE 3882520 T DE3882520 T DE 3882520T DE 3882520 D1 DE3882520 D1 DE 3882520D1
Authority
DE
Germany
Prior art keywords
tubular
face
wall thickness
greater wall
upsetting
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.)
Expired - Fee Related
Application number
DE88119262T
Other languages
German (de)
English (en)
Inventor
Wolfgang 5630 Remscheid De Meier
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE88119262T priority Critical patent/DE3882520D1/de
Application granted granted Critical
Publication of DE3882520D1 publication Critical patent/DE3882520D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Drilling Tools (AREA)
DE88119262T 1988-04-25 1988-11-19 Expired - Fee Related DE3882520D1 (it)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE88119262T DE3882520D1 (it) 1988-04-25 1988-11-19

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8805449U DE8805449U1 (it) 1988-04-25 1988-04-25
DE88119262T DE3882520D1 (it) 1988-04-25 1988-11-19

Publications (1)

Publication Number Publication Date
DE3882520D1 true DE3882520D1 (it) 1993-08-26

Family

ID=6823338

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8805449U Expired DE8805449U1 (it) 1988-04-25 1988-04-25
DE88119262T Expired - Fee Related DE3882520D1 (it) 1988-04-25 1988-11-19

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8805449U Expired DE8805449U1 (it) 1988-04-25 1988-04-25

Country Status (3)

Country Link
EP (1) EP0340340B1 (it)
AT (1) ATE91749T1 (it)
DE (2) DE8805449U1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4436915A1 (de) * 1994-10-15 1996-04-18 Hilti Ag Hohlbohrkrone mit einem hohlzylindrischen Trägerkörper
BE1013336A3 (nl) * 2000-03-01 2001-12-04 Diamant Boart Nv Buisvormige boor.
DE10041911B4 (de) * 2000-08-25 2009-02-05 Hilti Aktiengesellschaft Diamantbohrkrone
CN109352837B (zh) * 2018-10-25 2021-02-12 江苏锋泰工具有限公司 一种干式tm齿打孔钻

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199063C (it) *
US1996181A (en) * 1930-11-01 1935-04-02 Justin F Wait Process of forming castings
CH185076A (de) * 1935-05-04 1936-07-15 Sauer Carl Kernbohrer für Mauerwerk.
GB601428A (en) * 1945-06-18 1948-05-05 Wheel Trueing Tool Company Of Improvements in or relating to core bits
US2796777A (en) * 1953-05-06 1957-06-25 Stoll Albert Method and apparatus for resizing tools
US3306380A (en) * 1964-01-27 1967-02-28 Gen Automation Mfg Inc Core drill
US3802520A (en) * 1972-02-16 1974-04-09 L Whitman Combination masonry diamond bit and metal hole-cutting saw
US3981371A (en) * 1975-06-06 1976-09-21 Jamie Malcolm Wallis Core sampling drill
GB1583860A (en) * 1976-08-20 1981-02-04 Moppes & Sons Ltd L Van Core drills
CA1053938A (en) * 1977-11-18 1979-05-08 Robert E. Generoux Drill bit
JPS57127535A (en) * 1981-01-29 1982-08-07 Kobe Steel Ltd Upset forging method
JPS58163542A (ja) * 1982-03-23 1983-09-28 Sumitomo Metal Ind Ltd 管体のアプセツト加工方法
DE3408092A1 (de) * 1984-03-05 1985-09-19 Hilti Ag, Schaan Hohlbohrer
DE3512114A1 (de) * 1985-04-03 1986-10-09 Meissner, Joachim Hohlbohrkrone
JPS63149038A (ja) * 1986-12-15 1988-06-21 Nippon Steel Corp 外アツプセツト・プレスによる鋼管端部の加工方法

Also Published As

Publication number Publication date
EP0340340B1 (de) 1993-07-21
ATE91749T1 (de) 1993-08-15
DE8805449U1 (it) 1988-06-09
EP0340340A1 (de) 1989-11-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee