BOPI 09 BR/2023 REPERTOIRE NUMERIQUE 40 (11) 21176 (51) B29C 43/00 (2018.01); C08J 3/12 (2018.01); C08J 3/20 (2018.01); E02D 29/02 (2018.01) ; E04C 1/00 (2018.01) (21) 1202300069 - PCT/CA2021/051200 (22) 21/08/2021 (30) CA n° 3091815 du 31/08/2020; US n° 17/133, 959 du 24/12/2020 (54) Interlocking building blocks and mortarless interlocking building system. (72) BOWERS, Dustin (CA) (73) PLAEX BUILDING SYSTEMS INC., 5196 route 102, HAMPTON, New Brunswick E5M 2B6 (CA) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS Sarl, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-Saint John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A mortarless interlocking building block for constructing walls and/or partitions of a building including a solid moulded plastic body having a front face, a rear face, opposed top and bottom faces and opposed end faces, the opposed front and rear faces being substantially identical and including at least two vertically extending dovetail protrusions defining a dovetail recess for matingly receiving a dovetail protrusion of another building component, one of the opposed end faces having at least one vertically extending recess and the other of the end faces having at least one vertically extending protrusion for mating with a recess of another building block to interconnect adjacent blocks in end-to-end relation, and the top face having at least two tubular protrusions and the bottom face having at least two tubular recesses to lock stacked building blocks. Figure 1 Consulter le mémoire ________________________________________ (11) 21177 (51) G01C 21/00 (2018.01) ; G01C 21/16 (2018.01) (21) 1202300074 - PCT/EP2021/074174 (22) 01/09/2021 (30) EP n° 20193816.4 du 01/09/2020 (54) Underground worksite vehicle positioning control. (72) HÄMÄLÄINEN, Jyrki (FI) et TARIQ, Usama (FI) (73) SANDVIK MINING AND CONSTRUCTION OY, Pihtisulunkatu 9, 33330 TAMPERE (FI) (74) S.C.P AKKUM, AKKUM & Associates, n° 1777, Rue 6.261, Auditorium Jean Paul II, Quartier Mbankolo, B.P. 4966, YAOUNDE (CM). (57) According to an example aspect of the present invention, there is provided a method, comprising: defining first confidence level information for position information by a satellite based first positioning source of a vehicle at a worksite comprising an underground tunnel system,defining second confidence level information for position information by a second positioning source configured to position the vehicle based on environment scanning, selecting a positioning correction source for the vehicle on the basis of the first confidence level information and the second confidence level information, and applying the selected positioning correction source for correcting dead-reckoning based positioning for the vehicle.
RkJQdWJsaXNoZXIy MTM1NDc3MA==