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1. (WO2019033133) SELF DRILLING EXPANSION FRICTION BOLT
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/033133 International Application No.: PCT/ZA2018/050043
Publication Date: 14.02.2019 International Filing Date: 07.08.2018
IPC:
E21D 21/00 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
D
SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21
Anchoring-bolts for roof, floor, or shaft-lining protection
Applicants:
SWEMMER, Theodore Daniel [ZA/ZA]; ZA
Inventors:
SWEMMER, Theodore Daniel; ZA
Agent:
MCCALLUM RADEMEYER & FREIMOND; 390 Kent Avenue, Ferndale (P.O. Box 1130, Randburg) 2125 Johannesburg, ZA
RADEMEYER, Montague Ampie John; ZA
BRENNAN, Hillary; ZA
Priority Data:
2017/0395909.08.2017ZA
Title (EN) SELF DRILLING EXPANSION FRICTION BOLT
(FR) BOULON À FRICTION EXTENSIBLE AUTOPERCEUR
Abstract:
(EN) A rock bolt which includes an elongate tubular member (14), a sacrificial drill bit (20) at one end of the member, a flushing passage (42) to direct fluid to the drill bit (20), and a valve (34) which closes the passage (42) thereby to allow the fluid to pressurize the tubular member internally and so expand the member radially.
(FR) La présente invention concerne un boulon d'ancrage qui comprend un élément tubulaire allongé (14), un trépan sacrificiel (20) au niveau d'une extrémité de l'élément, un passage de rinçage (42) pour diriger un fluide vers le trépan (20), et une valve (34) qui ferme le passage (42), ce qui permet au fluide de mettre sous pression l'élément tubulaire de l'intérieur et de dilater ainsi radialement ledit élément.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)