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Pub. No.:    WO/2018/158562    International Application No.:    PCT/GB2018/050494
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Wed Feb 28 00:59:59 CET 2018
IPC: H02K 49/10
Inventors: LEWIS, Simon
A magnetic coupling apparatus, for transmitting drive from a driving member to a driven member, wherein the driving member has at least one first magnet and the driven member has a plurality of second magnets, and wherein the driving member and the driven member are arranged so that, as the driving member rotates, the at least one first magnet approaches one of the second magnets and thus exerts a force upon it which causes the driven member to rotate. Power is supplied (3) to motor (1), which drives member (2) rotationally (12). Mounted on driving member (2) are cylindrical bar magnets (5). Member (2) rotates (12) close to, but does not contact, driven member (7) and a magnet (5) engages with a magnet (11) located at the circumferences of members (2) and (7) respectively. The driving member and driven member are broadly planar, more preferably circular, disk-like or annular bodies. All magnets (5) and (11) are mounted normally so that (for example) their N poles are close to members (2) and (7) and thus their S poles are at their distal ends. Members (2) and (7) are coplanar and thus magnets (5) and (11) are parallel to each other and approach with the two N poles adjacent and the two S poles adjacent so that a maximum repulsive force (14) is generated causing driven member (7) to rotate (13) away from each magnet (5). When motor (1) is energised, driving member (2) will rotate and bring a magnet (5) towards a magnet (11), which will cause driven member (7) to turn. As member (2) reaches operating speed, the repeated repulsive "kicks" (14) from magnets (5) to magnets (11) will synchronise the rotations (12) and (13); as member (2) carries four magnets (5) and member (7) has eight magnets (11), member (7) will rotate at half the speed of member (2). Member (7) drives an item (8), e.g. a pump, or a generator - thereby generating power - via shaft (9).