EP1277887A3 - Verdrängerbohrer und Gerät, welches den Bohrer benutzt - Google Patents

Verdrängerbohrer und Gerät, welches den Bohrer benutzt Download PDF

Info

Publication number
EP1277887A3
EP1277887A3 EP02291716A EP02291716A EP1277887A3 EP 1277887 A3 EP1277887 A3 EP 1277887A3 EP 02291716 A EP02291716 A EP 02291716A EP 02291716 A EP02291716 A EP 02291716A EP 1277887 A3 EP1277887 A3 EP 1277887A3
Authority
EP
European Patent Office
Prior art keywords
tool
helical flight
stem
tip
drilling tool
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
EP02291716A
Other languages
English (en)
French (fr)
Other versions
EP1277887A2 (de
EP1277887B1 (de
Inventor
Lewis Compagnie du Sol Stansfield
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9918662&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1277887(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP1277887A2 publication Critical patent/EP1277887A2/de
Publication of EP1277887A3 publication Critical patent/EP1277887A3/de
Application granted granted Critical
Publication of EP1277887B1 publication Critical patent/EP1277887B1/de
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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices
    • E21B7/267—Drilling devices with senders, e.g. radio-transmitters for position of drilling tool
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
EP02291716A 2001-07-17 2002-07-09 Verdrängerbohrer und Gerät, welches den Bohrer benutzt Expired - Lifetime EP1277887B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0117410A GB2377235A (en) 2001-07-17 2001-07-17 Drilling tool
GB0117410 2001-07-17

Publications (3)

Publication Number Publication Date
EP1277887A2 EP1277887A2 (de) 2003-01-22
EP1277887A3 true EP1277887A3 (de) 2004-09-08
EP1277887B1 EP1277887B1 (de) 2008-08-27

Family

ID=9918662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02291716A Expired - Lifetime EP1277887B1 (de) 2001-07-17 2002-07-09 Verdrängerbohrer und Gerät, welches den Bohrer benutzt

Country Status (8)

Country Link
EP (1) EP1277887B1 (de)
AT (1) ATE406481T1 (de)
DE (1) DE60228527D1 (de)
ES (1) ES2312534T3 (de)
GB (1) GB2377235A (de)
HK (1) HK1052537A1 (de)
PL (1) PL211015B1 (de)
PT (1) PT1277887E (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400869B (en) * 2003-04-22 2006-11-15 Cie Du Sol Threading equipment
WO2004101897A1 (en) * 2003-05-15 2004-11-25 Pass, Jonathan, Charles A method of constructing a pile
US20050039952A1 (en) 2003-08-20 2005-02-24 Hill John L. Drilling apparatus, method, and system
NL1027150C2 (nl) * 2004-09-30 2006-04-03 Ecodrie B V Grondboor; werkwijze voor het verdiepen van een schacht in een bodem; en werkwijze voor het voortbrengen van een funderingspaal.
NL1027112C2 (nl) * 2004-09-24 2006-03-27 Ecodrie B V Grondboor en werkwijze voor het vervaardigen van een boorgat en een funderingspaal.
DE602006016690D1 (de) * 2005-07-28 2010-10-21 Soletanche Freyssinet Bohrschnecke
FR2889241B1 (fr) * 2005-07-28 2013-05-17 Cie Du Sol Tariere a ergot mobile
DK1942247T3 (da) * 2007-01-04 2009-06-02 Bauer Maschinen Gmbh Fremgangsmåde og indretning til tilvejebringelse af en boring i jorden ved hjælp af fortrængningsboring
BE1018097A3 (nl) * 2008-04-16 2010-05-04 Noterman Putboringen Boorvoorziening en werkwijze voor het vervaardigen van een funderingspaal en verbeterde funderingspaal met schroefvorm.
IT1394002B1 (it) 2009-04-21 2012-05-17 Soilmec Spa Attrezzatura di scavo e costipazione per la costruzione di pali a vite.
MD4011C2 (ro) * 2009-08-26 2010-08-31 Григоре ЧАПА Procedeu de înălţare a pilonului armat monolit şi dispozitiv de montare auxiliar pentru realizarea lui
PL2295645T3 (pl) 2009-08-28 2012-09-28 Bauer Maschinen Gmbh Narzędzie wiertnicze
IT1403419B1 (it) * 2010-12-23 2013-10-17 Soilmec Spa Metodo ed apparato per la perforazione del terreno.
GB2538003B (en) 2013-12-27 2020-11-25 Halliburton Energy Services Inc Threaded connection with high bend and torque capacities
ES2813410T3 (es) 2014-04-10 2021-03-23 Sentek Pty Ltd Barrena para suelo y método de fabricación
AT15492U1 (de) * 2016-05-20 2017-10-15 Dywidag-Systems Int Gmbh Verfahren zum Schlag- oder Drehschlagbohren von Löchern sowie gleichzeitigem Profilieren von Bohrlochwänden in Erd-, Boden- oder Gesteinsmaterial
EP3467205B1 (de) 2017-10-06 2019-12-04 BAUER Maschinen GmbH Verfahren zum erstellen eines pfahls im boden und bodenbearbeitungsgerät hierfür
US20200308791A1 (en) * 2017-12-18 2020-10-01 Nordwind S.R.L. Method for strengthening soils and operating vehicle usable in the method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994002687A1 (en) * 1992-07-24 1994-02-03 Wagstaff Piling Pty. Ltd. Apparatus and method for forming piles
EP0588143A1 (de) * 1992-09-01 1994-03-23 Strabag Hoch- Und Ingenieurbau Ag Erdbohrer zum Herstellen eines Ortbeton-Verdrängungspfahles
US5722498A (en) * 1993-10-28 1998-03-03 Hareninvest Soil displacement auger head for installing piles in the soil
GB2316700A (en) * 1996-09-26 1998-03-04 Kvaerner Cementation Found Ltd Bearing capacity enhancement for piling applications
GB2329204A (en) * 1997-09-11 1999-03-17 Bicc Plc Earth auger
US6033152A (en) * 1997-04-11 2000-03-07 Berkel & Company Contractors, Inc. Pile forming apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061197A (en) * 1975-11-06 1977-12-06 Skidmore Jr Sam C Method and apparatus for drilling in permafrost and the like
JPH01312193A (ja) * 1988-06-13 1989-12-15 Shiomigumi:Kk アースオーガ装置に使用する掘削ヘッド
JPH0711233B2 (ja) * 1991-08-05 1995-02-08 信 高橋 基礎杭の無排土施工装置および基礎杭の無排土施工方法
JPH07116707B2 (ja) * 1993-12-24 1995-12-13 小井 輝夫 基礎地盤の掘孔工法とその装置
JP3015935B2 (ja) * 1996-07-30 2000-03-06 小井 輝夫 基礎地盤の掘孔装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994002687A1 (en) * 1992-07-24 1994-02-03 Wagstaff Piling Pty. Ltd. Apparatus and method for forming piles
EP0588143A1 (de) * 1992-09-01 1994-03-23 Strabag Hoch- Und Ingenieurbau Ag Erdbohrer zum Herstellen eines Ortbeton-Verdrängungspfahles
US5722498A (en) * 1993-10-28 1998-03-03 Hareninvest Soil displacement auger head for installing piles in the soil
GB2316700A (en) * 1996-09-26 1998-03-04 Kvaerner Cementation Found Ltd Bearing capacity enhancement for piling applications
US6033152A (en) * 1997-04-11 2000-03-07 Berkel & Company Contractors, Inc. Pile forming apparatus
GB2329204A (en) * 1997-09-11 1999-03-17 Bicc Plc Earth auger

Also Published As

Publication number Publication date
ES2312534T3 (es) 2009-03-01
DE60228527D1 (de) 2008-10-09
PL355067A1 (en) 2003-01-27
PT1277887E (pt) 2008-12-03
PL211015B1 (pl) 2012-03-30
EP1277887A2 (de) 2003-01-22
GB2377235A (en) 2003-01-08
ATE406481T1 (de) 2008-09-15
HK1052537A1 (en) 2003-09-19
GB0117410D0 (en) 2001-09-05
EP1277887B1 (de) 2008-08-27

Similar Documents

Publication Publication Date Title
EP1277887A3 (de) Verdrängerbohrer und Gerät, welches den Bohrer benutzt
EP0666059A3 (de) Verdichtungsbohrer
EP1182364A3 (de) Selbstschneidende Schraube für eine Trockenmauer
EP0895754A3 (de) Eine Reibahle zum Ausräumen von Knochenkanälen
CA2364076A1 (en) Wall anchor with improved drilling tip
EP1093761A3 (de) Querverbindung für die Wirbelsäule
EP1336720A3 (de) Verfahren zur Herstellung eines Fensters in einem Rohr und Vorrichtung zum Gebrauch in diesem Verfahren
ZA939368B (en) Cutting tool having hard tip with lobes.
EP0846835A3 (de) Beton- oder Gesteinbohrwerkzeug mit wendelförmigen Abfuhrnuten
EP0941794A3 (de) Bohrwerkzeug
EP1356777A3 (de) Schraubenführung für einen Marknagel
EP1837128A3 (de) Bohrer, Wandschutz und Bohrverfahren
EP1406347A3 (de) Dieelektrische Stielantenne zur Verwendung in einer Pegelmesseinrichtung
EP1118718A3 (de) Drehende Pfahlverdrängeinrichtung
EP0962620A3 (de) Zweistufiger Bohrkopf
CA2426020A1 (en) Guide tube with threaded ends and waist
EP3023575A1 (de) Bohrstrangstange mit schulter
WO2003009335A3 (en) Ultra fine pitch capillary
CA2260612A1 (en) Pneumatic hammer drilling assembly for use in directional drilling
TW200507123A (en) Bonding tool with contained inner chamfer
WO2004047908A3 (en) A helical formation for a conduit
EP0865766A3 (de) Vorrichtung zur Herstellung einer Querbohrung in einem Röhrenknochen
BG107323A (en) Perforating drill
EP1039095A3 (de) Bohrmeissel
CA2074296A1 (en) Bent Sub

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7E 21B 10/44 B

Ipc: 7E 02D 5/66 B

Ipc: 7E 21B 7/26 B

Ipc: 7E 02D 7/22 B

Ipc: 7E 21B 10/62 B

Ipc: 7E 02D 5/36 A

17P Request for examination filed

Effective date: 20041206

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60228527

Country of ref document: DE

Date of ref document: 20081009

Kind code of ref document: P

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1052537

Country of ref document: HK

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20081120

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

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2312534

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081127

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KELLER HOLDING GMBH

Effective date: 20090527

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

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

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

NLR1 Nl: opposition has been filed with the epo

Opponent name: KELLER HOLDING GMBH

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081127

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

Ref country code: MC

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

Effective date: 20090731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: CH

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

Effective date: 20090731

Ref country code: LI

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

Effective date: 20090731

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081128

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

Ref country code: LU

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

Effective date: 20090709

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080827

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

Ref country code: PT

Payment date: 20120109

Year of fee payment: 11

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

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

Effective date: 20140109

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

Ref country code: PT

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

Effective date: 20140109

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

REG Reference to a national code

Ref country code: DE

Ref legal event code: R100

Ref document number: 60228527

Country of ref document: DE

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20151127

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

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

Ref country code: ES

Payment date: 20190801

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20200623

Year of fee payment: 19

Ref country code: IE

Payment date: 20200623

Year of fee payment: 19

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

Ref country code: GB

Payment date: 20200624

Year of fee payment: 19

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

Ref country code: DE

Payment date: 20200622

Year of fee payment: 19

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

Ref country code: IT

Payment date: 20200622

Year of fee payment: 19

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20200801

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200731

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

Ref country code: NL

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

Effective date: 20200801

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

Ref country code: BE

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

Effective date: 20200731

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20211202

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

Ref country code: ES

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

Effective date: 20200710

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60228527

Country of ref document: DE

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

Effective date: 20210709

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

Ref country code: GB

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

Effective date: 20210709

Ref country code: DE

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

Effective date: 20220201

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

Ref country code: FR

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

Effective date: 20210731

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

Ref country code: IT

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

Effective date: 20210709

Ref country code: IE

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

Effective date: 20210709