EP0187971A3 - Drill bit - Google Patents

Drill bit Download PDF

Info

Publication number
EP0187971A3
EP0187971A3 EP85115973A EP85115973A EP0187971A3 EP 0187971 A3 EP0187971 A3 EP 0187971A3 EP 85115973 A EP85115973 A EP 85115973A EP 85115973 A EP85115973 A EP 85115973A EP 0187971 A3 EP0187971 A3 EP 0187971A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
drill
bit
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.)
Granted
Application number
EP85115973A
Other languages
German (de)
Other versions
EP0187971A2 (en
EP0187971B1 (en
Inventor
August Haussmann
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.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst GmbH
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 Hawera Probst GmbH filed Critical Hawera Probst GmbH
Publication of EP0187971A2 publication Critical patent/EP0187971A2/en
Publication of EP0187971A3 publication Critical patent/EP0187971A3/en
Application granted granted Critical
Publication of EP0187971B1 publication Critical patent/EP0187971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B10/58—Chisel-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1908—Face or end mill
    • Y10T407/1924—Specified tool shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel
EP85115973A 1985-01-05 1985-12-14 Drill bit Expired - Lifetime EP0187971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3500202 1985-01-05
DE19853500202 DE3500202A1 (en) 1985-01-05 1985-01-05 DRILLING TOOLS

Publications (3)

Publication Number Publication Date
EP0187971A2 EP0187971A2 (en) 1986-07-23
EP0187971A3 true EP0187971A3 (en) 1987-08-19
EP0187971B1 EP0187971B1 (en) 1991-03-13

Family

ID=6259294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115973A Expired - Lifetime EP0187971B1 (en) 1985-01-05 1985-12-14 Drill bit

Country Status (3)

Country Link
US (1) US4696355A (en)
EP (1) EP0187971B1 (en)
DE (2) DE3500202A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707798A1 (en) * 1987-03-11 1988-09-22 Hawera Probst Kg Hartmetall ROCK DRILL
DE3820695C2 (en) * 1988-06-18 1996-07-25 Hawera Probst Kg Hartmetall Rock drill
US4976325A (en) * 1989-06-02 1990-12-11 Carolina Twist Drill, Inc. Fluted cutting tool and method of producing same
US5172775A (en) * 1991-03-06 1992-12-22 Kennametal Inc. Rotary drill bit insert
US6168355B1 (en) * 1994-05-06 2001-01-02 Lon J. Wardell End-mill tool with multiple cutting edges
US5918105A (en) * 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
TW299385B (en) 1994-12-12 1997-03-01 Black & Decker Inc Cutting tools for drilling concrete, aggregate, masonry or the like materials
US5641028A (en) * 1995-08-10 1997-06-24 Black & Decker Inc. Drill bit with debris conveying flute
US20120308319A1 (en) * 2011-06-03 2012-12-06 Karthik Sampath Rotary cutting tool having coated cutting tip and coolant holes and method of fabricating

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856589C (en) * 1942-12-15 1952-11-24 Hartmetallwerkzeugfabrik Meuts Rock percussion drill with hard metal inserts
FR1118255A (en) * 1955-01-26 1956-06-04 Drill bit for marble, granite, earthenware, cast iron and other materials
EP0048908A1 (en) * 1980-09-26 1982-04-07 Hawera Probst GmbH + Co. Drill, particularly for rotary percussion drilling

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE520130C (en) * 1927-03-03 1931-03-07 John Joseph Rawlings Twist drill for chunky rock types
DE1027608B (en) * 1952-09-06 1958-04-10 Boehler & Co Ag Geb Drill bit with flushing channels opening into grooves on the drill casing surface
GB776353A (en) * 1954-05-05 1957-06-05 Rawlplug Co Ltd Improved rotary drills
RO60181A7 (en) * 1969-12-27 1976-07-15
DE2211532C2 (en) * 1972-03-10 1982-07-01 Hawera Probst Gmbh + Co, 7980 Ravensburg Drill bit with helical drill dust flute
US4314616A (en) * 1980-01-28 1982-02-09 Acme-Cleveland Corporation Die-cast masonry drill with leading hard insert

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856589C (en) * 1942-12-15 1952-11-24 Hartmetallwerkzeugfabrik Meuts Rock percussion drill with hard metal inserts
FR1118255A (en) * 1955-01-26 1956-06-04 Drill bit for marble, granite, earthenware, cast iron and other materials
EP0048908A1 (en) * 1980-09-26 1982-04-07 Hawera Probst GmbH + Co. Drill, particularly for rotary percussion drilling

Also Published As

Publication number Publication date
EP0187971A2 (en) 1986-07-23
EP0187971B1 (en) 1991-03-13
US4696355A (en) 1987-09-29
DE3582147D1 (en) 1991-04-18
DE3500202A1 (en) 1986-07-10

Similar Documents

Publication Publication Date Title
GB8528777D0 (en) Drill bit
GB2184373B (en) Drilling tool
GB8618252D0 (en) Drilling well
GB8601089D0 (en) Hammer drill
GB8618979D0 (en) Drag-type drill bit
EP0202211A3 (en) Drill
GB2177954B (en) Boring tool
GB8531627D0 (en) Drilling borehole
DE3567054D1 (en) Rotary drill bit
EP0187971A3 (en) Drill bit
GB8612767D0 (en) Rock drills
GB8625584D0 (en) Drill
GB8428829D0 (en) Drill bit
GB8515078D0 (en) Drilling rig
GB8626651D0 (en) Boring tools
GB8618457D0 (en) Drill bit
GB8726868D0 (en) Drill bit
PL254989A1 (en) Drill bit
GB8527556D0 (en) Drill bit
DE3663895D1 (en) Drill chuck
PL251563A1 (en) Drilling bit
PL255510A1 (en) Drilling bit
PL254009A1 (en) Drilling bit
ZA87174B (en) Drill bit
GB8609713D0 (en) Drill bit & cutter

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19880205

17Q First examination report despatched

Effective date: 19881209

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

ITF It: translation for a ep patent filed

Owner name: UFFICIO TECNICO ING. A. MANNUCCI

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3582147

Country of ref document: DE

Date of ref document: 19910418

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19931115

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931229

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941214

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960212

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19961231

Ref country code: CH

Effective date: 19961231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010116

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702