Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Reexamination Certificate
2005-09-27
2005-09-27
Donovan, Lincoln (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
C359S544000
Reexamination Certificate
active
06949999
ABSTRACT:
An apparatus for holding a stable condition at two positions comprising a driving magnet130having driving magnetic poles and adapted to be movable in two directions; a driven magnet140having driven magnetic poles arranged to be always repulsed by the driving magnetic poles and adapted to be movable in two directions; a motion limiting means for limiting the movement of the driven magnet; and a driving means for driving the driving magnet in two directions. A direction of the repulsion force applied to the driven magnet by the driving magnet is changed, at a stage during which the driving magnet is moved to a first moving direction by the driving means, to a second acting direction of repulsion force opposite to a first acting direction of repulsion force which has been caused until said stage; and at a stage during which the driving magnet is moved to the second moving direction opposite to the first moving direction by the driving means, to the first acting direction of repulsion force opposite to the second acting direction of repulsion force which has been caused until said stage.
REFERENCES:
patent: 6157779 (2000-12-01), Kosaka et al.
patent: 2002021923 (2002-01-01), None
Donovan Lincoln
Jacobson & Holman PLLC
Tamron Co., Ltd.
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