Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Reexamination Certificate
2006-07-07
2008-09-09
Enad, Elvin (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
C335S281000, C335S283000, C335S285000, C335S296000, C335S302000
Reexamination Certificate
active
07423506
ABSTRACT:
An annular magnet is formed by coupling a plurality of arc-shaped divided magnets with each other in an annular shape as well as such being magnetized with N and S magnetic poles on the end surfaces thereof in an axial direction, wherein the annular magnet is formed such that each of the divided magnets has joint portions at both ends thereof so that the divided magnets are joined to each other. Each of the joint portions also has a joint surface to overlap the joint portions of adjacent divided magnets in the axial direction. The joint surface is magnetized to a magnetic pole different from that of a joint surface to which such is joined, and the divided magnets are coupled with each other by the magnetic attraction force of different magnet poles.
REFERENCES:
patent: 2360928 (1944-10-01), Beechlyn
patent: 2660726 (1953-12-01), Weingart
patent: 3585550 (1971-06-01), Dorsch et al.
patent: 3852692 (1974-12-01), Moorman
patent: 4002937 (1977-01-01), Anson
patent: 4405286 (1983-09-01), Studer
patent: 4555685 (1985-11-01), Maruyama
patent: 4793241 (1988-12-01), Mano et al.
patent: 4835505 (1989-05-01), Hattori et al.
patent: 4998084 (1991-03-01), Alff
patent: 5323133 (1994-06-01), Heath et al.
patent: 5615618 (1997-04-01), Berdut
patent: 5625239 (1997-04-01), Persson et al.
patent: 6020805 (2000-02-01), Børja
patent: 6094119 (2000-07-01), Reznik et al.
patent: 6310473 (2001-10-01), Zhao
patent: 6703829 (2004-03-01), Tola
patent: 2001/0018862 (2001-09-01), Sakurai et al.
patent: 2002/0017190 (2002-02-01), Sakurai
patent: 2004/0250632 (2004-12-01), Schroeder et al.
patent: 2007/0052312 (2007-03-01), Stanetskiy et al.
patent: 3084074 (2000-06-01), None
Enad Elvin
Musleh Mohamad A
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
SMC Corporation
LandOfFree
Annular magnet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Annular magnet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Annular magnet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3992712