JPS49112801A - - Google Patents
Info
- Publication number
- JPS49112801A JPS49112801A JP1557774A JP1557774A JPS49112801A JP S49112801 A JPS49112801 A JP S49112801A JP 1557774 A JP1557774 A JP 1557774A JP 1557774 A JP1557774 A JP 1557774A JP S49112801 A JPS49112801 A JP S49112801A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732306361 DE2306361A1 (de) | 1973-02-09 | 1973-02-09 | Hohlbohrkrone |
| DE19732360465 DE2360465A1 (de) | 1973-12-05 | 1973-12-05 | Hohlbohrkrone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS49112801A true JPS49112801A (de) | 1974-10-28 |
Family
ID=25764666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1557774A Pending JPS49112801A (de) | 1973-02-09 | 1974-02-08 |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS49112801A (de) |
| AT (1) | AT330440B (de) |
| CH (1) | CH585339A5 (de) |
| FR (1) | FR2217136B1 (de) |
| GB (1) | GB1465363A (de) |
| IT (1) | IT1007281B (de) |
| NL (1) | NL7401845A (de) |
| SE (1) | SE406950B (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0477253B1 (de) * | 1989-06-14 | 1993-08-11 | Tyrolit Schleifmittelwerke Swarovski KG | Hohlbohrer |
-
1974
- 1974-01-28 CH CH108474A patent/CH585339A5/xx not_active IP Right Cessation
- 1974-02-04 FR FR7403680A patent/FR2217136B1/fr not_active Expired
- 1974-02-06 AT AT91674A patent/AT330440B/de not_active IP Right Cessation
- 1974-02-08 GB GB599774A patent/GB1465363A/en not_active Expired
- 1974-02-08 JP JP1557774A patent/JPS49112801A/ja active Pending
- 1974-02-08 IT IT2028274A patent/IT1007281B/it active
- 1974-02-08 SE SE7401699A patent/SE406950B/xx unknown
- 1974-02-11 NL NL7401845A patent/NL7401845A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AT330440B (de) | 1976-06-25 |
| FR2217136B1 (de) | 1978-11-10 |
| CH585339A5 (de) | 1977-02-28 |
| SE406950B (sv) | 1979-03-05 |
| GB1465363A (en) | 1977-02-23 |
| ATA91674A (de) | 1975-09-15 |
| FR2217136A1 (de) | 1974-09-06 |
| IT1007281B (it) | 1976-10-30 |
| NL7401845A (de) | 1974-08-13 |