Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1993-07-23
1994-09-13
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335306, 446 92, 446137, 273239, H01F 702, A63H 3304, A63H 3326, A63F 300
Patent
active
053472535
ABSTRACT:
A non-magnetic case 3 made of acrylic acid or like synthetic resin has a case body 3a, a lid 3b and a right hexahedron shape. The case body 3a has a substantially spherical accommodation space 3c in which a spherical magnet body 2 having paired N and S poles arranged in a uni-axial direction is sealed together with oil or a like transparent liquid having a high specific gravity and also having a considerably high viscosity to provide buoyancy to the magnet body 2 and facilitate the rotation thereof with a lubricating action. The clearance between the magnet body 2 and the wall surface of the accommodation space 3c is set to be small such that the magnet body 2 can be rotated smoothly. The case 3 with the magnet body 2 therein is applicable to combination toys such as toy blocks and puzzle sets or various attracting articles having mutual attraction requirement. The thickness of a central portion of each side wall of the case is reduced to facilitate the attraction of the magnet bodies to each other.
REFERENCES:
patent: 2570625 (1951-10-01), Zimmerman
patent: 3059910 (1962-10-01), Moriya
patent: 3406363 (1966-05-01), Tate
patent: 3411120 (1968-11-01), Miyata
patent: 3982334 (1976-09-01), Tate
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patent: 4741534 (1988-05-01), Rogahn
patent: 5057363 (1991-10-01), Nakanishi
patent: 5127652 (1992-07-01), Unger
MagX Co., Ltd.
Picard Leo P.
Ryan Stephen T.
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