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1. (WO1992009789) ROCK BOLT
Latest bibliographic data on file with the International Bureau

Considered void 08.01.1993


Pub. No.: WO/1992/009789 International Application No.: PCT/FI1991/000356
Publication Date: 11.06.1992 International Filing Date: 27.11.1991
Chapter 2 Demand Filed: 21.05.1992
IPC:
E21B 17/042 (2006.01) ,E21B 17/07 (2006.01) ,E21B 17/22 (2006.01) ,E21D 21/00 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02
Couplings; Joints
04
between rod and bit, or between rod and rod
042
threaded
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
02
Couplings; Joints
04
between rod and bit, or between rod and rod
07
Telescoping joints for varying drill string lengths; Shock absorbers
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
22
Rods or pipes with helical structure
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:
TAMROCK OY [FI/FI]; Pihtisulunkatu 9 SF-33330 Tampere, FI (AllExceptUS)
SAARELAINEN, Pertti [FI/FI]; FI (UsOnly)
Inventors:
SAARELAINEN, Pertti; FI
Agent:
OY KOLSTER AB; Stora Robertsgatan 23 P.O. Box 148 SF-00121 Helsinki, FI
Priority Data:
90586228.11.1990FI
Title (EN) ROCK BOLT
(FR) BOULON DE ROCHE
Abstract:
(EN) The invention relates to a rock bolt (1) comprising a sleeve-like outer bolt portion (2) and an inner bolt portion (3) within the outer bolt portion, which bolt portions can be pushed within each other. The outer bolt portion is provided at its front and rear end with internal threads (5, 11) opposite in screw direction. The inner bolt portion (3) is provided at the front end with adjacent threads (5, 12) opposite in screw direction with respect to each other but equal in screw direction with respect to the thread (4, 11) of the outer bolt portion on that side. The bolt can be installed in a hole by pushing it first into the hole with the portions (2, 3) within each other, whereafter the inner bolt portion is screwed off the outer bolt portion, withdrawn from within the outer bolt portion and attached to the rear end of the outer bolt portion by means of the threads (12, 11).
(FR) Boulon de roche (1) comportant une partie externe (2) en forme de manchon et une partie interne (3) aptes à s'emboîter l'une dans l'autre. Les extrémités avant et arrière de ladite partie externe sont dotées de filetages internes (5, 11) à sens opposés. L'extrémité avant de ladite partie interne (3) est dotée de filetages voisins (5, 12) dont les sens sont opposés l'un à l'autre mais égaux au sens du filetage (4, 11) situé du même côté sur ladite partie externe. On peut installer le boulon dans un trou d'abord en l'introduisant dans le trou pendant que lesdites parties (2, 3) sont emboîtées l'une dans l'autre, puis en dévissant ladite partie interne de ladite partie externe, en la retirant de cette dernière et en la fixant à l'extrémité arrière de la partie externe à l'aide des filetages (12, 11).
Designated States: AT, AU, BB, BG, BR, CA, CH, CS, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MN, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: Finnish (FI)
Also published as:
AU1991089276