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1. (WO2018106300) DOUBLE HEADED DRILL BIT FOR A CONTINUOUS COAL MINING MACHINE
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Pub. No.: WO/2018/106300 International Application No.: PCT/US2017/050387
Publication Date: 14.06.2018 International Filing Date: 07.09.2017
IPC:
E21C 27/24 (2006.01) ,E21C 27/22 (2006.01) ,E21C 25/00 (2006.01) ,E21C 25/22 (2006.01) ,E21C 35/19 (2006.01) ,E21C 35/197 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
27
Machines which completely free the mineral from the seam
20
Mineral freed by means not involving slitting
24
by milling means acting on the full working face
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
27
Machines which completely free the mineral from the seam
20
Mineral freed by means not involving slitting
22
by rotary drills with breaking-down means, e.g. wedge-shaped drills
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
25
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
25
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
22
Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
35
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/-E21C33/182
18
Mining picks; Holders therefor
19
Means for fixing picks or holders
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
C
MINING OR QUARRYING
35
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/-E21C33/182
18
Mining picks; Holders therefor
19
Means for fixing picks or holders
197
using sleeves, rings or the like, as main fixing elements
Applicants:
ALLIANCE COAL, LLC [US/US]; 1146 Monarch Street, 3rd Floor Lexington, KY 40513, US
Inventors:
TOD, Hill; US
Agent:
MARTIN, C., Richard; US
Priority Data:
15/371,29607.12.2016US
Title (EN) DOUBLE HEADED DRILL BIT FOR A CONTINUOUS COAL MINING MACHINE
(FR) TRÉPAN À DEUX TÊTES POUR MACHINE D'EXTRACTION CONTINUE DU CHARBON
Abstract:
(EN) A double headed drill bit for a cutting element carried on a rotary drum member of a continuous mining machine is provided according to the invention. The drill bit is formed from a length of hardened material and includes a first tapered bit portion extending from a point located at a first end of the length of hardened material toward a mid-portion of the length of hardened material, and a second tapered bit portion extending from a point located at a second end of the length of hardened material toward the mid-portion of the length of hardened material. The drill bit is removably positioned within the central opening of an annular sleeve located in a block member. Positive retention means for securing the drill bit against longitudinal movement within the annular sleeve are provided in the form of a retaining clip which engages an annular groove of the drill bit.
(FR) Cette invention concerne un trépan à double tête pour un élément de coupe porté sur un élément de tambour rotatif d'une machine d'exploitation minière continue. Le trépan est constitué d'une longueur de matériau durci et comprend une première partie de trépan conique s'étendant à partir d'un point situé à une première extrémité de la longueur de matériau durci vers une partie centrale de la longueur de matériau durci, et une seconde partie de trépan conique s'étendant à partir d'un point situé à une seconde extrémité de la longueur de matériau durci vers la partie centrale de la longueur de matériau durci. Le trépan est positionné de manière amovible à l'intérieur de l'ouverture centrale d'un manchon annulaire disposé dans un élément de bloc. Des moyens de retenue positifs pour fixer le trépan contre un mouvement longitudinal à l'intérieur du manchon annulaire sont fournis sous la forme d'une pince de retenue qui vient en prise avec une rainure annulaire du trépan.
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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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)