NO771246L - DRILL CROWNS. - Google Patents

DRILL CROWNS.

Info

Publication number: NO771246L
Authority: NO; Norway
Prior art keywords: drill crowns; crowns; drill
Prior art date: 1976-04-12

Application number

NO771246A

Other languages

Norwegian (no)

Inventor

Carl Eric Johansson

Original Assignee

Skf Ind Trading & Dev

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.)

1976-04-12

Filing date

1977-04-06

Publication date

1977-10-13

1977-04-06 Application filed by Skf Ind Trading & Dev filed Critical Skf Ind Trading & Dev

1977-10-13 Publication of NO771246L publication Critical patent/NO771246L/en

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
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
- E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant
- 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
- E21B10/08—Roller bits
- E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
- 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
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details

Landscapes

Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Mining & Mineral Resources (AREA)
Mechanical Engineering (AREA)
Physics & Mathematics (AREA)
Environmental & Geological Engineering (AREA)
Fluid Mechanics (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Earth Drilling (AREA)
Rolling Contact Bearings (AREA)

NO771246A 1976-04-12 1977-04-06 DRILL CROWNS. NO771246L (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NLAANVRAGE7603835,A NL179409C (en)	1976-04-12	1976-04-12	DRILL CHISEL FOR ROCK.

Publications (1)

Publication Number	Publication Date
NO771246L true NO771246L (en)	1977-10-13

Family

ID=19826003

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO771246A NO771246L (en)	1976-04-12	1977-04-06	DRILL CROWNS.

Country Status (12)

Country	Link
JP (1)	JPS5936076B2 (en)
AU (1)	AU514631B2 (en)
BR (1)	BR7702233A (en)
CA (1)	CA1064014A (en)
DE (1)	DE2715788C2 (en)
FR (1)	FR2348358A1 (en)
GB (1)	GB1563533A (en)
IT (1)	IT1076714B (en)
NL (1)	NL179409C (en)
NO (1)	NO771246L (en)
SE (1)	SE433958B (en)
ZA (1)	ZA772203B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2755591C2 (en) *	1977-12-14	1985-11-07	SKF GmbH, 8720 Schweinfurt	Roller chisel with conical cutting rollers
DE2824202A1 (en) *	1978-06-02	1979-12-06	Sandvik Gmbh	Conical cutter roller chisel for mine working - has conical roller bearing force lines converging towards cutting roller tips

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1010406A (en) *	1909-07-15	1911-11-28	Howard Robard Hughes	Roller-drill.
US1973975A (en) *	1933-07-25	1934-09-18	Anthony E Carlson	Rotary rock bit construction
US2292036A (en) *	1940-06-28	1942-08-04	Chicago Pneumatic Tool Co	Bearing for drill bits
US2339161A (en) *	1942-07-21	1944-01-11	Reed Roller Bit Co	Cone bit construction
FR1053319A (en) *	1952-04-02	1954-02-02	Materiel De Forage Soc De Fab	Mounting device for knurled tools
US2831660A (en) *	1956-04-16	1958-04-22	Nat Oil Tool Co Inc	Lubricated well drill
DE1178806B (en) *	1961-05-22	1964-10-01	Hughes Tool Co	Roller chisel for a drilling process that works with gaseous flushing
US3307645A (en) *	1964-10-20	1967-03-07	Exxon Production Research Co	Reverse bearing bit
NL179154C (en)	1975-02-17	1986-07-16	Skf Ind Trading & Dev	ROTARY DRILL CHUCK.
US3921735A (en) *	1975-02-27	1975-11-25	Dresser Ind	Rotary rock bit with cone mouth air screen

1976
- 1976-04-12 NL NLAANVRAGE7603835,A patent/NL179409C/en not_active IP Right Cessation
1977
- 1977-03-22 SE SE7703246A patent/SE433958B/en unknown
- 1977-03-24 AU AU23597/77A patent/AU514631B2/en not_active Expired
- 1977-04-06 BR BR7702233A patent/BR7702233A/en unknown
- 1977-04-06 NO NO771246A patent/NO771246L/en unknown
- 1977-04-07 FR FR7710618A patent/FR2348358A1/en active Granted
- 1977-04-07 CA CA275,858A patent/CA1064014A/en not_active Expired
- 1977-04-07 DE DE2715788A patent/DE2715788C2/en not_active Expired
- 1977-04-12 GB GB15169/77A patent/GB1563533A/en not_active Expired
- 1977-04-12 IT IT22349/77A patent/IT1076714B/en active
- 1977-04-12 ZA ZA00772203A patent/ZA772203B/en unknown
- 1977-04-12 JP JP52041023A patent/JPS5936076B2/en not_active Expired

Also Published As

Publication number	Publication date
AU514631B2 (en)	1981-02-19
JPS52145302A (en)	1977-12-03
DE2715788C2 (en)	1986-06-26
FR2348358B3 (en)	1980-01-18
JPS5936076B2 (en)	1984-09-01
GB1563533A (en)	1980-03-26
BR7702233A (en)	1977-12-13
NL7603835A (en)	1977-10-14
FR2348358A1 (en)	1977-11-10
NL179409C (en)	1986-09-01
DE2715788A1 (en)	1977-10-20
IT1076714B (en)	1985-04-27
SE433958B (en)	1984-06-25
SE7703246L (en)	1977-10-13
ZA772203B (en)	1978-03-29
NL179409B (en)	1986-04-01
CA1064014A (en)	1979-10-09
AU2359777A (en)	1978-09-28

Publication	Publication Date	Title
NL7700636A (en)	1977-07-26	DRILL CROWN.
NL7706420A (en)	1977-12-13	TOOTHBRUSH.
NL7705970A (en)	1977-12-02	TOOTHBRUSH.
IT7826226A0 (en)	1978-07-28	HOUSE-BOAT.
NL7608015A (en)	1977-03-08	DRILL UNIT.
NL7801323A (en)	1978-08-11	DRILL.
SE7709660L (en)	1978-03-14	DRILL
NL7705251A (en)	1977-11-16	CONSTRUCTION.
DK153971C (en)	1989-03-06	Drills
NL7703651A (en)	1977-10-11	VAGINARING.
ES230876Y (en)	1978-03-16	SKI-BOB.
NO771246L (en)	1977-10-13	DRILL CROWNS.
OA05551A (en)	1981-04-30	Polygrain seed drill.
ES222715Y (en)	1977-03-16	SHOE-SKATE.
AT347727B (en)	1979-01-10	DRILL
NL7704868A (en)	1977-12-20	SINKING WELL.
ES223988Y (en)	1977-05-01	PORTA-FILERS.
IT1084204B (en)	1985-05-25	DSVILUPPATRICE.
DK138827B (en)	1978-11-06	Narresut.
ES232764Y (en)	1978-07-16	DENTAL OCCLUSOR.
PL97820B1 (en)	1978-03-30	DRILL
SE7609396L (en)	1978-02-26	KORBAR DRILL
ES220968Y (en)	1977-03-01	PERFECTED DRILL.
ES222986Y (en)	1977-08-01	NEW PECERA.
ES218287Y (en)	1977-01-01	PLATE-COVER.