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Patent No. 6368227

Method of swinging on a swing

A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.

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Class 335/296 - Magnet structure or material


Subclass of Class 335 - Electricity: magnetically operated switches, magnets, and electromagnets
Definition: Subject matter including magnets or electromagnets, per
No. of patents: 433
Last issue date: 02/12/2013


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NumberTitleIssue Date
8373528Magnetic field control method and magnetic field generator
There is provided a magnetic field control method and a magnetic field generator which are capable of moving a local maximum point of magnetic field intensity on a predetermined plane easily to any given point within a predetermined area on the predetermined plane. ...
02/12/2013
8368496Permanent magnet having improved field quality and apparatus employing the same
A ring magnet assembly has a generally cylindrical magnet body defining an air gap having an upper end and a lower end. Upper and lower face plates dispose respectively at an upper portion of the ring magnet and lower portion of the ring magnet. The face plates pref...
02/05/2013
8362864Magnet assembly
A magnet assembly (200) is provided according to the invention. The magnet assembly (200) includes at least one magnet (210), a magnet keeper (220) including a substantially planar magnet receiving face (222) for receiving the at l...
01/29/2013
8294542Magnetic suspension device
A magnetic suspension device comprises a magnetic base and a suspension body. The suspension body is suspended above the magnetic base. The suspension body is provided with a receiving coil and at least one luminous body. The magnetic base is provided with a transmi...
10/23/2012
8294543Confined field magnet system and method
A system and method of generating a magnetic field that is uniform in magnitude and direction may generally restrict the field from expanding away from a longitudinal axis. In some instances, such a magnetic field may be controllable in magnitude and direction. In a...
10/23/2012
8248196Magnet arrangement for magnetic levitation vehicles and method for the production thereof
The invention relates to a magnet arrangement for magnetic levitation vehicles. Said arrangement comprises a magnetic back box and a plurality of magnetic poles that are connected to said back box and that have magnetic pole faces bordering on a common reference sur...
08/21/2012
8228151Electromagnetic energy transducer
An electromagnetic energy transducer configured to convert mechanical energy into electrical energy comprises two magnetic elements including a permanent magnetic element and a soft-magnetic element and an electrical coil. The permanent magnetic element and the soft...
07/24/2012
8222984Electromagnetic transducer
Two layers of a plurality of rod-like permanent magnets each having a width Wm, a thickness Tm and a predetermined length are aligned on a plane in such a way that they have opposite magnetic pole orientations alternately and are aligned at a fixed pole pitch τp ar...
07/17/2012
8207806Magnetic oscillation element
According to one embodiment, magnetization directions of a magnetic free layer and a magnetic pinned layer are parallel to junction planes between the magnetic free layer and a spacer layer and between the magnetic pinned layer and the spacer layer. The magnetic fre...
06/26/2012
8179220Confined field magnet system and method
A system and method of generating a magnetic field that is uniform in magnitude and direction may generally restrict the field from expanding away from a longitudinal axis. In some instances, such a magnetic field may be controllable in magnitude and direction. In a...
05/15/2012
8138873Permanent magnet device
A magnet arrangement for creating a magnetic field. The magnet arrangement includes a first magnet having a first surface defining a first pole and a second surface defining a second pole opposite the first pole, and a second magnet having a third surface defining a...
03/20/2012
8098123Power inductor with reduced DC current saturation
A power inductor includes a first magnetic core having a first end and a second end, an inner surface and an outer surface, and an inner cavity defined by the inner surface. A slotted air gap in the first magnetic core extends from i) the first end to the second end...
01/17/2012
8022800Field coil assembly for electromagnetic clutch
A field coil assembly for an electromagnetic clutch, which includes an electromagnetic coil body formed by winding an electromagnetic coil; a bobbin for supporting the electromagnetic coil body; a field core for receiving the bobbin and the electromagnetic coil body...
09/20/2011
8013699MRI-safe electro-magnetic tranducer
An electro-magnetic transducer includes a housing. At least one coil is associated with the housing. A spherical magnet within the housing is capable of turning in any direction and of moving along an axis. A first keeper and a second keeper are positioned on opposi...
09/06/2011
8013700Field element
The present invention relates to a field element which reduces a harmonic component of a magnetic flux density. Permanent magnets (20) are in contact with first magnetic plates (1, 3) in a direction parallel to a rotation axis (P). The first magnetic p...
09/06/2011
7986205Magnetic field control method and magnetic field generator
There is provided a magnetic field generator 10 which is capable of varying an orientation of a magnetic field at a target position P easily in all directions. The magnetic field generator 10 includes a pair of magnetic field generating units 16...
07/26/2011
7940150Six-degree-of-freedom precision positioning system
In a six-degree-of-freedom precision positioning system, magnetic force and fluid buoyancy are used to levitate a platform, and the non-contact magnetic force between electromagnets and magnets forms a main driving force for the platform. Therefore, no friction is p...
05/10/2011
7843294System and method for moving an object
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlati...
11/30/2010
7839245System and method for producing circular field emission structures
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlati...
11/23/2010
7834728Method for producing two dimensional codes for defining spatial forces
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlati...
11/16/2010
7791440Microfabricated system for magnetic field generation and focusing
A method of forming, in or on a Si substrate, planar micro-coils with coil windings of high aspect ratio (>3) and a wide variety of geometric shapes. The micro-coils may be formed on a Si substrate and be embedded in a dielectric, or they may be formed in trenches w...
09/07/2010
7772949Magnet structure for nuclear magnetic resonance imaging apparatus
A magnet structure for a Nuclear Magnetic Resonance imaging apparatus includes at least two opposing magnetic pole pieces, which are located at a certain distance from each other and delimit an imaging region. The pole pieces are formed by at least one massive layer...
08/10/2010
7750775Control unit
A control unit includes a plurality of electronic components; and at least two metal busbars disposed along each other. Each of the at least two metal busbars establishes an electrical connection between the electronic components and includes a magnetic-material por...
07/06/2010
7737812Method for opening hollow structures made from magnetic nanoparticles
A method is proposed for opening of hollow structures made of magnetic nanoparticles. To avoid an unwanted heating, the hollow structures are opened by a strong, preferably rotating magnetic field. The method can be used, in particular, for the releasing of a diagno...
06/15/2010
7728707Split-coil magnet arrangement with improved mechanical construction
A magnet arrangement with a magnet coil system (M) with two coil systems (C, D) that are each arranged in a container (B1, B2) positioned around the z axis and that are axially mechanically separated by a split (G), wherein each coil system (C, D) comp...
06/01/2010
7719396Actuator
A first virtual axis orthogonally intersects with a second virtual axis, and a third axis (axis passing a support center point) vertical to the first and second virtual axes is permitted to be a reference axis. A magnetic drive mechanism is provided with first magne...
05/18/2010
7714685Electromagnetically operated unit, in particular a clutch, brake and/or lock
An electromagnetically operated unit for controlling a radial connection. The unit has a first device which is optionally coupleable with a second device. The second device includes a magnet and/or electromagnet. The unit also has radially movable switching elements...
05/11/2010
7646274Apparatus and method for non-invasive measurement of cardiac output
A comparatively light and compact permanent magnet arrangement for an MRI apparatus has a pair of opposed permanent magnet arrays with a shimming system to adjust the uniformity and strength of a magnetic field in a central chamber of the apparatus. The MRI apparatu...
01/12/2010
7642887System and method for reducing effect of magnetic fields on a magnetic transducer
An electro-magnetic driver transducer free of torque in the presence of an external magnetic field, of any direction and orientation (such as in a Magnetic Resonance Imaging environment). The transducer includes a housing. At least one coil is associated with the ho...
01/05/2010
7595713Magnetic field generator for MRI and method of covering magnetic field generator for MRI
A magnetic field generator for MRI comprises a generator main body and a covering member for covering the whole generator main body, and the covering member is made of a non-magnetic material, for example a closely woven fabric of stainless steel, aluminum, copper, ...
09/29/2009
7592890Magnetic-path member, electromagnetic coupling device using magnetic-path member, and method of manufacturing magnetic-path member
A magnetic-path member includes first and second magnetic portions positioned on inner and outer peripheral sides of the magnetic-path member respectively. The magnetic-path member includes a non-magnetic portion interposed between the first and second magnetic port...
09/22/2009
7583171Magnetic field generator, photomagnetic information storing system, and photomagnetic information storing apparatus
The present invention efficiently radiates heat generated by a coil while suppressing a decrease in the efficiency of generation of magnetic fields caused by an eddy current. The present invention includes a coil extending spirally in a plane and covered with a diel...
09/01/2009
7583172Multi-frequency electromagnetic field generator
Disclosed is a multi-frequency electromagnetic field generator that is capable of generating electromagnetic flux fields that are projected at a distance from the device. Radial fields, horizontal fields and spiral fields are generated by the electromagnetic field g...
09/01/2009
7522026Alignment method and system for electromagnet in high-energy accelerator
New and useful alignment method and system for electromagnets used in the high energy accelerator that can make the installation simple and less time consuming are disclosed. By measuring the multiple of measurement reference points for obtaining the position and po...
04/21/2009
7498915Application of superconductive permanent magnets
A fixed remanence rigid permanent magnetic structure is provided. The fixed remanence rigid permanent magnetic structure is fabricated from a number of superconductive magnetic segments composed of high temperature superconductive particles. The superconductive magn...
03/03/2009
7479859Apparatus and method for processing material in a magnetic vortex
An apparatus and method in which three or more permanent or electromagnets are mounted in a support structure on rotatable axes in spaced relationship to each other such that the magnetic lines of force of the same magnetic polarity continuously repel each other to ...
01/20/2009
7453342Method of controlling and stabilizing laser output
This invention describes a means by which lasers and laser beam controllers mounted on moving vehicles or other unstable platforms can be isolated from vibrations. By magnetically levitating the entire laser or just the beam controller hardware, targeting efficiency...
11/18/2008
7439836Magnetic field generating apparatus for magnetic resonance imaging
A Magnetic Resonance Imaging (MRI) system is disclosed. The MRI system includes a cryogenic magnet assembly with a cryogenic vessel housing a superconducting magnet. Disposed radially inboard of the cryogenic magnet assembly are a gradient coil module and a pluralit...
10/21/2008
7436179Magnet device
A magnet device has main coils in a pair positioned facing each other to form a static magnetic field space in between and external magnetic flux shielding coils placed coaxially to the main coils. The external magnetic flux shielding coils have a first coil group h...
10/14/2008
7432791Magnet arrangement for carrying, guiding and/or braking systems in magnetic levitation vehicles
A magnet arrangement (1) for magnetic levitation vehicles is described that is comprised of an electromagnet having a plurality of magnet poles, said magnet poles having cores connected via pole backs (4) and coils (5) coiled onto them, said coi...
10/07/2008
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