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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8159102 | Motor and electronic apparatus using the same A rotor 14 is rotatably disposed around a stator 13 that is provided with a plurality of magnetic poles 13a. The inner circumferential face of a rotor frame 14b of the rotor is provided with a magnet 15 magnetized to ... | 04/17/2012 |
| 8067870 | Motor and electronic apparatus having the same The motor of the invention is an outer rotor type motor, and a rotor includes a cylindrical rotor frame that is opened at one end thereof in an axial direction, and a hollow cylindrical magnet attached to an inner periphery of the rotor frame. The magnet has a joini... | 11/29/2011 |
| 7394174 | Brushless D.C. motor The brushless direct current motor comprises a housing 10, a stator 13 and a rotor 11 within the housing, windings on the stator, sensors for sensing the position of the rotor relative to the stator and electronic circuitry for switching the cur... | 07/01/2008 |
| 7356906 | Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same A method of manufacturing a radial core type double rotor brushless direct-current motor is provided. A double rotor structure is employed with inner and outer rotors which are doubly disposed such that a stator core is completely divided. A rotational shaft is rota... | 04/15/2008 |
| 7350283 | Method for making rotor for permanent magnet electric machine A method for making a rotor for a permanent magnet electric motor comprising the steps of providing an annular permanent magnet and an annular back-up member. Affixing the magnet to the inner surface of the back-up member in an un-magnetized condition and overmoldin... | 04/01/2008 |
| 7329373 | Control method of rotational speed of screw for injection molding machine A control method of a rotational speed of a screw for an injection molding machine, wherein rotation of a motor is transmitted the screw disposed within a cylinder member attached to an injection frame, includes the steps of (a) sending an electric current to a stat... | 02/12/2008 |
| 7317272 | Rotor of motor A rotor for an electric motor includes a base plate (13) made of a magnetic material and coupled to a rotational shaft (12), a rotor core (18) provided on the base plate (13) and including a protrusion protruding axially relative to the b... | 01/08/2008 |
| 7312543 | Driving device A stepping motor includes a magnet having a magnetized portion, first and second coils, a first yoke having a first-magnetic-pole portion, a second yoke having a second-magnetic-pole portion, and a rotating yoke having a third-magnetic-pole portion fixed to the sing... | 12/25/2007 |
| 7294944 | Brushless motor A compact, highly accurate and inexpensive brushless motor is disclosed. A bearing is fixed to the inner periphery of a cylindrical portion of a housing, and a shaft is rotatably inserted through the bearing to cover the housing. A yoke arranged at the forward end o... | 11/13/2007 |
| 7271517 | Three-phase alternating current generator A three-phase alternating current generator includes a bowl-shaped flywheel, sixteen permanent magnets provided on an inner circumferential surface of the flywheel, and a stator located in the flywheel. Further, The stator is composed of twelve teeth provided opposi... | 09/18/2007 |
| 7247960 | Motor/encoder assembly for tape drives A magnetic/encoder assembly has a compact design and combines the features of motor, encoder and chuck locating feature within a single motor housing. The motor/encoder includes a DC brushless motor with an inner magnetic rotor. The motor windings and the commutatio... | 07/24/2007 |
| 7245051 | Three-phase brushless motor A three-phase brushless motor in one mode of the present invention is comprised of a rotation axis, a rotor yoke rotating around said rotation axis, a drive magnet formed into a ring shape and attached on said rotor yoke, said drive magnet having a plurality of magn... | 07/17/2007 |
| 7242121 | Brushless motor with speed detector having noise cancel pattern A drive/control circuit integrated brushless motor is provided that has high rotating precision, satisfactory noise resistance and high output, and is suited to be smaller to save as much space as possible. The motor is a brushless motor provided with circuit integr... | 07/10/2007 |
| 7193343 | Electric motor A stator having a stator core about which a coil is wound is secured to an aluminum frame. A magnet-embedded type rotor is rotatably accommodated inward of the stator. A circuit substrate is attached to the surface of the aluminum frame opposite to the surface to wh... | 03/20/2007 |
| 7166940 | External rotor motor An external rotor motor is disclosed, which features a stator (11) and a rotor (13) surrounding the stator (11) while leaving an air gap. A damper (16) made of an elastic material is arranged on the outside of the rotor (13) in ord... | 01/23/2007 |
| 7166942 | Magneto-generator A magneto-generator includes: a plurality of magnets disposed being bonded to an inner circumferential surface of a flywheel; and a magneto coil that is disposed in the flywheel being opposed to the magnets and coaxial with the flywheel, and that generates an electr... | 01/23/2007 |
| 7145272 | Motor/encoder assembly for tape drives A magnetic/encoder assembly has a compact design and combines the features of motor, encoder and chuck locating feature within a single motor housing. The motor/encoder includes a DC brushless motor with an inner magnetic rotor. The motor windings and the commutatio... | 12/05/2006 |
| 7132771 | Motor for washing machine A motor for a drum type washing machine is disclosed, wherein noise is reduced. To this end, the drum type washing machine is provided with a washing motor having a stator fitted at a rear surface of a tub and having a plurality of slots on which a coil is wound; a ... | 11/07/2006 |
| 7126786 | Motor/encoder assembly for tape drives A magnetic/encoder assembly has a compact design and combines the features of motor, encoder and chuck locating feature within a single motor housing. The motor/encoder includes a DC brushless motor with an inner magnetic rotor. The motor windings and the commutatio... | 10/24/2006 |
| 7119470 | Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is ... | 10/10/2006 |
| 7095193 | Brushless DC motors with remote Hall sensing and methods of making the same A brushless DC motor apparatus includes a housing and a stator assembly coupled to the housing. The apparatus further includes a magnetic rotor assembly rotatably coupled to the housing. The magnetic rotor assembly is configured to rotate within the housing in respo... | 08/22/2006 |
| 7095149 | Magnetization pattern of rotor magnet for stepping motor A magnetization pattern of a rotor magnet for a stepping motor includes a plurality of magnetization portions, which is provided on the rotor magnet in a rotation direction of the rotor magnet. The magnetization portions have different magnetic poles which are alter... | 08/22/2006 |
| 7038336 | Construction of power assisting synchronous motor An improved synchronous electric motor incorporating a stator and large current terminal unit made into a single unit with solidified molding resin thus a separate casing is unnecessary and thus the constitution is simplified. The large current terminal unit and a m... | 05/02/2006 |
| 6998748 | Motor rotor and manufacturing method thereof A motor rotor includes a magnetic yoke and a rubber magnet located within the magnetic yoke. At least one pattern is formed on a surface of the rubber magnet, which faces the magnetic yoke. The manufacturing method of the motor rotor is to provide a rubber magnet ha... | 02/14/2006 |
| 6974522 | Method and apparatus for mounting a plurality of magnet segments on a back ring A method and apparatus for assembling permanent magnet segments and a back ring wherein a fixture holds segments in circumaxially spaced relationship, adhesive is applied to the segments, externally from pressure sensitive adhesive tape and the fixture then expands ... | 12/13/2005 |
| 6940236 | Parallel connected double-phase full-wave brushless dc motor A parallel connected double-phase full-wave brushless dc motor includes a first drive member, a second drive member, a first sensor member, a second sensor member, a first motor coil and a second motor coil. The first drive member is connected to the first sensor me... | 09/06/2005 |
| 6927524 | Rotary electric motor having separate control modules for respective stator electromagnets A rotary brushless electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The stator is formed of a plurality of individual power modules and corresponding core segments, each module including electrical control ... | 08/09/2005 |
| 6891295 | Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w... | 05/10/2005 |
| 6867523 | Brush motor A brush motor has a magnetic sensor provided for detecting a change in a field magnet occurring in correspondence with a change in a rotational position of a rotor core. ... | 03/15/2005 |
| 6858956 | Magnetic pole position detector for rotor A rotor (17, 31, 71, 91, 101, 121, 131, 141, 201, 401) of a motor (13, 51) is provided with a rotation shaft (21, 59, 410) and a plurality of magnets (15, 53, 75, 105, 210A, 210B, 411) on a circular periphery. Plates (25,... | 02/22/2005 |
| 6819022 | Brushless motor for power tool It is an object of the present teachings to provide a technique that rationalizes the structure of the brushless motor so as to save space in the power tool. According to the present teachings, a representative brushless motor utilized in a power tool may comprise a... | 11/16/2004 |
| 6788013 | Permanent magnet electric motor and method of making same A motor for reducing torque ripple includes a shaft having a shaft axis, a rotor positioned about the shaft, a first magnet ring positioned on the rotor, the first magnet ring having magnets each occupying a magnet angle δ on the rotor, and a second magnet ring pos... | 09/07/2004 |
| 6759773 | Electronically controlled electric motor provided for use in an environment containing solvents An electronically controlled electric motor has, as position sensors (6), coils (5) which are arranged in a stator (2) and opposite permanent magnets (4) of a rotor (3). The coils (5) are produced integrally with connecting ... | 07/06/2004 |
| 6753629 | Brushless DC motor A brushless DC motor includes: a motor section which has a rotor, a stator and a housing; a control circuit section which is integrated with the motor section and separated from the motor section by a partition; and a casing member which covers the control circuit s... | 06/22/2004 |
| 6750586 | DC brushless motor structure A DC brushless motor structure comprises a cylinder-like base having a through-hole or a chamber. The through-hole acts as an axle hole for rotatably receiving a shaft of a rotor. Alternatively, the shaft of the rotor is rotatably received in the chamber. An axle ho... | 06/15/2004 |
| 6713981 | Pole position detector for motor A pole position detector correctly detects a pole position of a permanent magnet motor. Each magnetic sensor (27) provides an electric signal in response to leakage flux from a magnet rotor (17). A computation unit (2) detects a change in the ou... | 03/30/2004 |
| 6712585 | Magnetic pump A brushless direct current magnetic pump includes a drive shaft that passes through and that is coupled to a magnet carrier. The magnet carrier with an annular sleeve with at least six outer ribs that define at least six slots that extend axially along the sleeve. T... | 03/30/2004 |
| 6707201 | Cylinder for guiding at least one yarn A cylinder for guiding yarn comprises a hollow-cylindrical jacket seated on a support by radially acting magnetic bearings having plural pole windings distributed circumferentially. The cylinder jacket position is detected by plural sensors coupled with the pole win... | 03/16/2004 |
| 6680553 | Rotating electrical apparatus A brushless DC rotating machine that employs permanent magnets on the rotor and a magnet carrier that is juxtaposed to the rotor and which cooperates with a sensor for providing signals indicative of the angular position of the rotor. The magnets are carr... | 01/20/2004 |
| 6657348 | Rotor shield for magnetic rotary machine A magnet machine includes a magnet rotor. The rotor includes a sleeve and a magnet. The magnet is positioned within the sleeve. A highly electrically conductive, nonmagnetic shield surrounds the magnet. The shield reduces rotor eddy current losses and low... | 12/02/2003 |
