ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRIS..MTNORS......................JBDM Ver 0.1.50 (10 Nov 2016) - 1620000/02050922EUROPEAN PATENT APPLICATIONA320170308EP08166631.520081015enenenMI2007199220071016IT2017030820171020090422200917E21B 17/042 20060101AFI20170130BHEP F16L 15/06 20060101ALI20170130BHEP deGewinde für Dreh-Schlag-BohrrohrenThread for roto-percussion drill pipefrFiletage pour tube de forage roto-percussion1Foxley Ventures LLC101069860G70577 VA.be101 Main Street Suite OneTappan, NY 10983USThompson, Jamie67 Eleftherias st. Parekklisia4520, LimassolCYRipamonti, Enrico100042583Giambrocono & C. S.p.A., Via Rosolino Pilo, 19/B20129 MilanoITATBEBGCHCYCZDEDKEEESFIFRGBGRHRHUIEISITLILTLULVMCMTNLNOPLPTROSESISKTRALBAMKRS20170308201710

A roto-percussion pipe, comprising a tubular portion having at its ends a female coupling carrying a female thread, and a male coupling carrying a male thread, said male coupling and female coupling enabling the pipe to be connected to other pipes identical therewith to form a roto-percussion drill string of the required length, said threads having at least three starts.

G70577 VA.beEP08166631.5Foxley Ventures LLC2, 3DH20170203E21BDE19803304A1BOART HWF GMBH CO KG [DE]19981203X1,2,4-6,8-11Y3* column 3, line 10 - line 19 *DE10020388A1KLEMM BOHRTECHNIK ZWEIGNIEDERL [DE]20011031X1* paragraphs [0002], [0008], [0023] *GB1120388ASANDVIKENS JERNVERKS AB19680717X1,7* page 1, line 47 - line 50 ** page 2, line 1 - line 2 ** page 2, line 21 - line 23 *US6120067AMOSING DONALD J [US] ET AL20000919Y3* column 1, line 17 - line 24 ** column 6, line 64 - line 66 *US4625814AHELASUO KALEVI [FI] ET AL19861202Y3* column 5, line 65 - line 68 *Rampelmann, KlausThe Hague20170126DE19803304A119981203NONEDE10020388A120011031NONEGB1120388A19680717AT269777B19690410BE683860A19661216CH492116A19700615DE1483863A119700305DK113561B19690408GB1120388A19680717NL6609441A19670109US6120067A20000919DK0897504T320040209EP0897504A119990224US5810401A19980922US6120067A20000919WO9742441A119971113US4625814A19861202AU562563B219870611CA1217761A19870207DE3370051D119870409EP0126740A119841205FI824126A19840531JPS60500266A19850228US4625814A19861202WO8402158A119840607