Magnetic Patents (Class 40/449)
  • Patent number: 10222825
    Abstract: An automotive display device on which an image may be displayed, the automotive display device being for a vehicle interior, the automotive display device including an automotive frame, at least part of the automotive frame being bendable; and a bending controller to control bending of the automotive frame.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seong Min Wang, MuGyeom Kim, Soo Youn Kim, Hyeonjeong Sang, Jae Won Lee
  • Patent number: 8739441
    Abstract: An exemplary power regulator apparatus provides power for illumination of a display object, such as a merchandise package or container, which has a light emitting apparatus comprising a secondary inductor and an illumination source. A support structure, such as a point of purchase display, typically contains or supports one or more power regulators and display objects. The power regulator comprises a controller and a primary inductor, and the controller is adapted to provide a voltage or current to the primary inductor to generate a primary inductor voltage. The controller may also comprise a plurality of switches and a memory adapted to store values for switching frequency or switch on-time durations or pulse widths. The illumination source emits visible light when the power regulator is in an on state and when the secondary inductor is within a predetermined distance of the primary inductor.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: June 3, 2014
    Assignee: NthDegree Technologies Worldwide Inc
    Inventors: Mark D. Lowenthal, William Johnstone Ray, David R. Bowden, Peter Michael Bray
  • Patent number: 8514170
    Abstract: A smaller sized flip dot display utilizes a magnetically actuated pixel that rotates between two orientations. The orientations display two different optical states. A simulated dot matrix design improves the aesthetics and consumer appeal, and also permits a flip dot display capable of producing a positive contrast display image with darker colored “ON” pixels contrasting with brighter background and “OFF” pixels by reducing the visibility of the spacing gap between each rotating pixel and the surrounding background. An interwoven configuration of magnetic actuators with a coil around each arm of a U-shaped core may result in lower power consumption, low production cost, and small size required for use in consumer and small mobile devices such as watches and mobile phones.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: August 20, 2013
    Assignee: Art Technology Inc.
    Inventors: Donald R. Brewer, David B. Cope, Andrew M. Wright, Christopher J. Corcoran
  • Patent number: 8020326
    Abstract: Composite magneto-optical elements with unique shapes and architectures comprising a magnetic component and a colored component. These magneto-optical elements can also be manufactured by a small variety of low-cost processes resulting in their use in a variety of applications including low-cost, large-format, reflective display devices.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: September 20, 2011
    Assignee: TRED Displays Corporation
    Inventors: Charles O. Edwards, James Caruso
  • Patent number: 7992332
    Abstract: An exemplary power regulator apparatus provides power for illumination of a display object, such as a merchandise package or container, which has a light emitting apparatus comprising a secondary inductor and an illumination source. A support structure, such as a point of purchase display, typically contains or supports one or more power regulators and display objects. The power regulator comprises a controller and a primary inductor, and the controller is adapted to provide a voltage or current to the primary inductor to generate a primary inductor voltage. The controller may also comprise a plurality of switches and a memory adapted to store values for switching frequency or switch on-time durations or pulse widths. The illumination source emits visible light when the power regulator is in an on state and when the secondary inductor is within a predetermined distance of the primary inductor.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: August 9, 2011
    Assignee: NthDegree Technologies Worldwide Inc.
    Inventors: Mark D. Lowenthal, David R. Bowden, William Johnstone Ray, Peter Michael Bray
  • Patent number: 7814691
    Abstract: Coatings with left-handed metamaterials (which are man-made materials comprising micro-structures having unusual electro-magnetic properties) are provided around an appliance, such as a hotplate or hob, incorporating induction heating coils that functions as an optical display. In one embodiment, operation of induction heating coils in the cook top alters the optical properties of the metamaterial. Thus, if the metamaterials were previously transparent, they can now become opaque. Doing so changes a display, which can be detected by an operator. This makes it possible to create an automatic operating display for an appliance, such as an induction based hob.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: October 19, 2010
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventor: Wolfgang Thimm
  • Patent number: 7806568
    Abstract: Reconfigurable lighting fixtures, household apparatuses and household fixtures include fixed components and a plurality of removable and interchangeable decorative adornments. The adornments each include at least one magnet that magnetically couples the adornment to a portion of the fixture or apparatus. Some or all of the set of interchangeable adornments may be interchanged to provide the fixtures or apparatus with a different appearance. The adornments may be of different shapes, sizes, and colors and they may be coupled to various non-fixed locations. The adornments may include multiple pieces coupled together and to the magnet using wire, string, chain or metal links. The fixtures or apparatus may be easily disassembled and reassembled by removing and replacing the adornments for cleaning or to change the appearance thereof. The fixture/apparatus may be a chandelier, candle holder, sconce, lamp, bobeche, tract lighting, ceiling fan, curtain rod, lampshade and the like.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: October 5, 2010
    Assignee: Magnificent Trimmings, Inc.
    Inventor: Colleen Nielson
  • Patent number: 7377060
    Abstract: A display unit that does not use any characters, but uses pieces (or chips) that are housed within prearranged slots on a base unit to form human recognizable characters. The slots are arranged into a group, with each group of slots forming a specific topography within a group that enables a variety of characters to be displayed.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: May 27, 2008
    Inventors: Grigor Abramyan, Edgar Abramyan
  • Publication number: 20040098892
    Abstract: A visual display apparatus (1) is disclosed which finds particular use as a sign in retail advertising or as a toy whereby a child can arrange display elements (5) in an appealing pattern. The sign (1) includes a ferromagnetic support (2) upon which magnetic display elements (5) can be positioned. Each element (5) comprises a magnetic base (10), an axle (11) projecting up from the magnetic base (10) through the bore (30) of a peripherally-toothed disc-like gear (13) and through the bore (31) of a spacer (19), the spacer (19) being affixed to the toothed gear (13), and a disc-shaped display sheet (15) mounted on the spacer (19) and fast therewith. The toothed gears (13) of adjacent elements (5) engage so that rotational movement of one element (5) causes movement of the adjacent element (5). Adjacent elements (5) are placed on the support surface to spell out a word or other required advertising.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 27, 2004
    Inventor: John Michael Brennan
  • Patent number: 6705874
    Abstract: Colored magnetic particles for magnetophoretic display capable of substantially preventing peeling of a pigment therefrom, to thereby prevent contamination of a dispersion medium during use of a magnetophoretic display panel, and a method for manufacturing the same. The colored magnetic particles include magnetic particle elements and a coloring layer formed on each of the magnetic particle elements from a first dispersion liquid using a coating apparatus of a tumbling, fluidizing and granulating type, to thereby color each of the magnetic particles. The first dispersion liquid is constituted of a coloring pigment, synthetic resin and water. The synthetic resin is in the form of an aqueous emulsion. The colored magnetic particles each include a protective layer formed on the coloring layer. The protective layer is formed from a second dispersion liquid constituted of synthetic resin dispersed in water.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: March 16, 2004
    Assignees: Marktec Corporation, Takara Co., Ltd
    Inventor: Akihiro Koyama
  • Patent number: 6603458
    Abstract: An electromagnetic display apparatus includes a panel having substantially square pixel, which are divided into two parts. Each pixel is provided with a rotatably-mounted, bistable tilting flap, which is asymmetrical in relation to its rotational axis. The tilting flap covers one of the two portions of the panel surface in the pixel zone when the flap lies in each of its two stable positions. The side of the tilting flap facing the front side of the panel and the portion of the panel in the pixel zone, which is covered by the tilting flap and the other portion of the panel in the pixel zone has a second color. A permanent magnet is fitted to the tilting flap in close proximity to the rotational axis. The tilting flap is displaced from a first position into a second position by an electromagnet, which is located on the reverse side of the panel and is allocated to the pixels and which has a coil body and core.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: August 5, 2003
    Assignee: Annex Anzeignsysteme GmbH
    Inventors: Helmut Fischer, Wolfgang Kögler, Rudolf Pongratz
  • Publication number: 20030041492
    Abstract: A small dot or disk flip dot display element and a method of making a flip dot display formed of such elements is shown where the disks or dots (24) flip between an ON position showing a bright surface and an OFF position showing a dark surface. The dots are flipped by electromagnets (36, 38) having poles (32) with a first coil (36, 38) wound thereon for producing a reversible magnetic field operating the flip dots. A second coil (40, 42) is wound on the poles in series with the first coil. The second coil is dipped in molten solder to form an electrical contact for energizing the first coils, and for mounting the elements to a circuit board. Separate terminal pins are not required for electrical connections to the coils, thus allowing flip dots as small as 5 mm or less to be used.
    Type: Application
    Filed: October 7, 2002
    Publication date: March 6, 2003
    Inventors: Sandor Weinacht, Veso S. Trianic
  • Patent number: 6510632
    Abstract: A small dot or disk flip dot display element and a method of making a flip dot display formed of such elements is shown where the disks or dots flip between an ON position showing a bright surface and an OFF position showing a dark surface. The dots are flipped by electromagnets having poles with a first coil wound thereon for producing a reversible magnetic field operating the flip dots. A second coil is wound on the poles in series with the first coil. The second coil is dipped in molten solder to form an electrical contact for energizing the first coils, and for mounting the elements to a circuit board. Separate terminal pins are not required for electrical connections to the coils, thus allowing flip dots as small as 5 mm or less to be used.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: January 28, 2003
    Assignee: Mark IV Industries Limited
    Inventors: Sandor Weinacht, Veso S. Trianic
  • Publication number: 20020189145
    Abstract: A display system for displaying display members such as numbers, letter or other indicia, e.g., for use in signage for displaying the price of gasoline on the premises of a service station. The display system of the invention utilizes magnets to facilitate easy substitution of display elements. The display system has a support surface supporting at least one securing member, which is preferably a V-shaped member having an upwardly facing recess. A magnet is provided proximate the securing member. A display member is provided with at least one secured member, e.g., an inverted isosceles triangle having a downwardly facing apex for complementary engagement with said upwardly facing recess of the securing member. A metallic mass is located proximate to the secured member for magnetic engagement with the magnet proximate the securing member. An extendable arm is preferably provided for manipulating the display members when the display members are mounted high off of the ground.
    Type: Application
    Filed: May 14, 2002
    Publication date: December 19, 2002
    Inventor: Reza Toraby-Payhan
  • Patent number: 6468614
    Abstract: An apparatus for displaying paper, fabric, photographs or the like, comprises a long, narrow strip of thin ferromagnetic spring steel, and a number of small tacks embedded with rare earth magnets or other magnets. A tape-like dispenser stores unused tacks and a portion of the strip that has yet to be used. The strip of spring steel is covered on one face by a strong adhesive. The adhesive side, when the strip has not been used, is covered by a protective layer, such as wax paper. The spring steel is rolled up inside the dispenser. The strip may be divided at regular intervals by a cut through the protective paper and adhesive layer, the cut line scoring the spring steel.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: October 22, 2002
    Inventors: Anna L. LeVine, Kermit S. Westergaard
  • Patent number: 6326945
    Abstract: A magnetic writing board providing a thin, lightweight, durable writing board, which has an internal array of closely arranged magnet assemblies. The magnetic writing board is operated to contemporaneously create a display which may be transferred to a computer for the modification thereof. The image may then be redisplayed, printed, stored, and/or remotely displayed such as at a computer monitor. A portion or all of an image may be completely and immediately erased. The magnetic writing board includes a grid disposed behind a display surface and a plurality of display elements, one each disposed within each cell defined by the grid. Each grid cell receives a masking agent to obscure the contrasting color of at least the forward edge of the display element when the display element is in the back position. The magnet assemblies are each oriented with their magnetic poles in the same direction, with the positive and negative poles being oriented to face either the front or back of the magnetic writing board.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: December 4, 2001
    Inventor: Carl K. Williams, III
  • Patent number: 6278431
    Abstract: A magnetically operated display unit includes a frame with a color, a plate pivotably mounted on the frame and including a first surface with a color different to that of the frame and a second surface with a color identical to that of the frame, a magnet embedded in the plate, a pair of bobbins mounted on the frame so that two tips of the magnet are located between two tips of the pair of bobbins, a solenoid mounted on the U-shaped ferromagnetic element and a light emitting diode mounted on the frame. The plate defines a cutout for receiving the light emitting diode and one of the bobbins. The light emitting diode includes a tip located on a level between the plate and the tips of the pair of bobbins. Opposite polarities are selectively induced in the pair of bobbins.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: August 21, 2001
    Assignee: Lite Vision Corporation
    Inventor: Pin-chi Kao
  • Patent number: 6272778
    Abstract: Display element for an electromagnetic display device comprising a frame and a disc mounted to the frame for pivoting of the disc about a pivoting axis, the disc having two differently colored sides, an ON-side the color of which contrasts against the background color of the frame and an OFF-side having a non-contrasting color. An electromagnetic drive system drives the disc from a first operating position where its ON-side is directed towards the main viewing direction to a second operating position where its OFF-side is directed towards the viewing direction. The drive system comprises a permanent magnet attached to the disc and an electromagnet attached to the frame.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: August 14, 2001
    Assignee: Lite Vision, Inc
    Inventor: Joseph Tang
  • Patent number: 6216370
    Abstract: A sign having a changeable array constituted by a plurality of pivotally mounted disks which have opposite bright and dark surfaces. The bright surface of each disk is illuminated by an adjacent light emitter when positioned in a direction of viewing. Light from each light emitter is blocked from illuminating disks other than the adjacent disk in the array.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: April 17, 2001
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 6209243
    Abstract: A display element includes a disk which rotates preferably through 160°-180° to display a bright or a dark side in a viewing direction in ON and OFF positions respectively. A constantly on LED is arranged to illuminate the disk in ON position for viewing in a first arc including the viewing direction. The disk masks the LED to viewers in the OFF position of the disk. In addition to light from the illuminated disks, the components may be arranged so that viewers over a second arc may view the LED directly when the disk is in ON position. The elements may be arranged in arrays to form a changeable sign. Thus the array may be made up of single elements, of columns of such elements or of a combination of elements and columns.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: April 3, 2001
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 6181315
    Abstract: A method of operating a magnetically operated display unit that includes a frame of a color, a plate pivotably mounted on the frame which includes a first surface of a color different from that of the frame and a second surface of a color identical to that of the frame, a magnet embedded in the plate, a U-shaped ferromagnetic element mounted on the frame so that two tips of the magnet are located between two tips of the U-shaped ferromagnetic element, a solenoid mounted on the U-shaped ferromagnetic element and a light emitting diode mounted on the frame. The plate contains a cutout designed for receiving the light emitting diode and one of the tips of the U-shaped ferromagnetic element. The tip of the light emitting diode is located on a level between the plate and the tips of the U-shaped ferromagnetic element. The light emitting diode is visible sufficiently above the surface of the plate so that its light can shine on that surface.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: January 30, 2001
    Assignee: Lite Vision Corporation of Taiwan
    Inventor: Pin-Chi Kao
  • Patent number: 6163994
    Abstract: A changeable display element is edgewise mounted on an insulating board and carries to rotate through about 180.degree. to show one color face or the other to a viewer. The board provides a similarly colored face for each face to form a pixel. The element carries a permanent magnet and is driven by a switchable magnetic field provided from the board. Soft iron pads on the board cooperate with the magnet on each position to retain the element against incidental displacement between application of the field. The board may support arrays of such elements.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: December 26, 2000
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 6147623
    Abstract: A smart cross electronic traffic sign for the control of vehicle and pedestrian traffic with programming and control by infrared remote control. The device is lightweight and easily portable. Messages can be displayed in the color of the normal traffic sign for the condition displayed. An audible message duplicates the message displayed.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: November 14, 2000
    Inventor: Craig R. Rippen
  • Patent number: 6111759
    Abstract: A display array including a board resembling a printed circuit board or printed wiring board to which are pivotally mounted a plurality of display elements whose appearance in a viewing direction is controlled by a sense of magnetization of a core which extends through a bore in the board. A conducting coil formed on the surface of the board is located so that current in the coil will magnetize the core.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: August 29, 2000
    Assignee: Mark IV Industries Limited
    Inventors: Veso S. Tijanic, Matthew D. Dennis, Coeman L. S. Wong, Van H. Le
  • Patent number: 6025825
    Abstract: A magnetically operated display unit includes a frame of a color, a plate pivotably mounted on the frame which includes a first surface of a color different from that of the frame and a second surface of a color identical to that of the frame, a magnet embedded in the plate, a U-shaped ferromagnetic element mounted on the frame so that two tips of the magnet are located between two tips of the U-shaped ferromagnetic element, a solenoid mounted on the U-shaped ferromagnetic element and a light emitting diode mounted on the frame. The plate contains a cutout designed for receiving the light emitting diode and one of the tips of the U-shaped ferromagnetic element. The tip of the light emitting diode is located on a level between the plate and the tips of the U-shaped ferromagnetic element. The light emitting diode is visible sufficiently above the surface of the plate so that its light can shine on that surface. Two opposite currents are selectively directed through the solenoid.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: February 15, 2000
    Assignee: Lite Vision Corporation of Taiwan
    Inventor: Pin-chi Kao
  • Patent number: 6009648
    Abstract: A changeable display element is edgewise mounted on an insulating board and carries to rotate through about 180.degree. to show one color face or the other to a viewer. The board provides a similarly colored face for each face to form a pixel. The element carries a permanent magnet and is driven by a switchable magnetic field provided from the board. Soft iron pads on the board cooperates with the magnet on each position to retain the element against incidental displacement between application of the field. The board may support arrays of such elements.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: January 4, 2000
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 6000812
    Abstract: An array of disks faces a viewing direction is composed of disk's rotatable about an axis approximately perpendicular to the viewing direction between alternating orientations where bright and dark sides are respectively displayed in the viewing direction. There is provided a row of LED's located forwardly of the array and out of the normal viewing path located to illuminate the disks of said array. Masking means prevents direct illumination from said LED's being visible in the viewing direction.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: December 14, 1999
    Assignee: Mark IV Industries Limited
    Inventors: Timothy A. Freeman, Veso S. Tijanic
  • Patent number: 5933329
    Abstract: A board usually resembling a PCB or a PWB mounts a display element, whose appearance in a viewing direction is controlled by the sense of magnetization of a core which extends through a bore in the board. A conducting coil formed on the surface of said board is located so that current in said coil will magnetize the core.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: August 3, 1999
    Assignee: Mark IV Industries Limited
    Inventors: Veso S. Tijanoc, Matthew D. Dennis, Coeman L. S. Wong, Van H. Le
  • Patent number: 5909971
    Abstract: A display element has a disk which rotates on an axis to show its bright or dark side in the viewing direction. When the bright side is showing the disk allows passage of light from an LED. When the dark side is showing the disk masks the light from the LED. Preferably, an opaque shroud surrounds the LED and projects a short distance forwardly thereof to help define the cone in which light from the LED may be viewed in ON position. A side wall of said element projects forwardly of the rotation axis to mask the escape of light on that side transverse to the viewing direction. A second side wall may be placed on the other side for the same purpose or the adjacent element may provide the second wall.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: June 8, 1999
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 5901483
    Abstract: A display element includes a disk which rotates through 160.degree.-180.degree. to display a bright or a dark side in a viewing direction in ON and OFF positions respectively A constantly on LED is arranged to illuminate the disk in ON position for viewing in a first arc including the viewing direction. The disk masks the LED to viewers in the OFF position of the disk. In addition to light from the illuminated disks, the components may be arranged so that viewers over a second arc may view the LED directly when the disk is in ON position. The elements may be arranged in arrays to form a changeable sign. Thus the array may be made up of single elements, of columns of such elements or of a combination of elements and columns.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: May 11, 1999
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 5898418
    Abstract: A magnetically operated display unit includes a frame of a color, a plate pivotably mounted on the frame which includes a first surface of a color different from that of the frame and a second surface of a color identical to that of the frame, a magnet embedded in the plate, a U-shaped ferromagnetic element mounted on the frame so that two tips of the magnet are located between two tips of the U-shaped ferromagnetic element, a solenoid mounted on the U-shaped ferromagnetic element and a light emitting diode mounted on the frame. The plate contains a cutout designed for receiving the light emitting diode and one of the tips of the U-shaped ferromagnetic element. The tip of the light emitting diode is located on a level between the plate and the tips of the U-shaped ferromagnetic element. The light emitting diode is visible sufficiently above the surface of the plate so that its light can shine on that surface. Two opposite currents are selectively directed through the solenoid.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: April 27, 1999
    Inventor: Pin-Chi Kao
  • Patent number: 5887541
    Abstract: Display devices are disclosed using a display surface through which are seen a plurality of indicating elements. The indicating elements have an axis parallel to the display surface and are provided with at least two information display faces preferably of different colors. The indicating elements are provided with permanent magnets and are rotatable about axes which allow alternative faces of the indicating elements to be viewed through the display surface. Locking elements are provided so that the indicating elements are maintained with one of the information carrying faces aligned with the display surface. The arresting elements may include a permanent magnet. The arrangement is particularly applicable for manually-controlled signal display devices.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: March 30, 1999
    Inventors: Laszlo Jaki, Sandor Szenassy, Laszlo Szidor, Jessie D. Swinea
  • Patent number: 5846630
    Abstract: A magnetic migration display panel including a dispersion liquid layer composed of a magnetic particle, a dispersion medium composed of an organic solvent, a thickening agent composed of fatty acid bis-amide with a hydroxyl group having a melting point of 120.degree. C. to 160.degree. C., and a coloring material as desired, on a substrate is provided.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: December 8, 1998
    Assignee: Kabushiki Kaisha Pilot
    Inventors: Hiroshi Tazaki, Teruaki Nojima
  • Patent number: 5818414
    Abstract: A signal display device with passive components is disclosed, in particular for displaying characters which consist of a plurality of matrix-arranged picture elements. The device has an information-carrying base plate, suitable in particular for color information. Display elements made of generally cylindrical bodies can preferably swivel around an axis that coincides with their centroidal axis. Said display elements are provided with at least one signal display surface which can swivel in the direction of the information display surface of the base plate and which is suitable for carrying information, preferably information that differs from the information carried by the base plate. The invention is characterized in that the display elements are provided with three such parts which are mutually offset in the direction of their axes and of which two front faces are arranged perpendicularly to the axis and are secured to each other forming a single piece with the signal display surface.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: October 6, 1998
    Inventors: Laszlo Jaki, Sandor Szenassy, Laszlo Szidor, Jessie D. Swinea
  • Patent number: 5809675
    Abstract: A board usually resembling a PCB or a PWB mounts a display element, whose appearance in a viewing direction is controlled by the sense of magnetization of a core which extends through a bore in the board. A conducting coil formed on the surface of said board is located so that current in said coil will magnetize the core.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: September 22, 1998
    Assignee: Mark IV Industries Ltd.
    Inventors: Veso S. Tijanic, Matthew D. Dennis, Coeman L. S. Wong, Van H. Le
  • Patent number: 5793343
    Abstract: A portable display signage for all weather and ambient lighting conditions has dual matrices of character generating elements. One matrix is provided by a multiplicity of passive display units arranged in an array for cooperatively displaying graphics or characters. Each of the passive display elements comprises a flat disk having a reflective side and a non-reflective side. An electromagnet on each display element rotates the disk to display its reflective or non-reflective side to form an information display from the first matrix. The second matrix is formed from active display elements including light emitting diodes arranged in an array for cooperatively displaying graphics or characters. Each active display element is co-located with a passive display element to form a set and are positioned to be visible between gaps in the first matrix. A display is built from a plurality of modules containing subsets of the two matrices.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: August 11, 1998
    Assignee: American Signal Company
    Inventors: Stephen P. Hart, Patrick Henry Ryan, Jr.
  • Patent number: 5793349
    Abstract: A light shutter for selectively masking the light emitted from an optic fibre is combined with a transparent panel through which the emitted light will travel. The transparent panel may be lens shaped and used, for example, to reduce light divergence about a transverse axis or to expand light divergence about a transverse axis.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: August 11, 1998
    Assignee: Mark IV Industries Limited
    Inventor: John Browne
  • Patent number: 5787619
    Abstract: A magnetic display erasing apparatus is provided wherein the distance by which an erasing head is moved when an unerasing operation is to be performed can be made as short as possible, thereby allowing the apparatus to be miniaturized and various designs obtained. A magnetic stripe an a magnetic display sheet are formed on a magnetic card. An erasing head is disposed on the side of the back face of the magnetic card which is conveyed. During an erasing operation, a magnetic field which is substantially parallel is formed at the position where the magnetic display sheet passes. When the magnetic display sheet is not to be erased, the erasing head is retracted from a card conveying path and then housed in a magnetic shield so as to be hermetically sealed. Accordingly, the magnetic field from the erasing head is weakened and cannot reach the magnetic display sheet.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: August 4, 1998
    Assignee: Star Micronics Co., Ltd.
    Inventor: Kiyoshi Urushibata
  • Patent number: 5771616
    Abstract: A display element has a disk which rotates on an axis to show its bright or dark side in the viewing direction. When the bright side is showing the disk allows passage of light from an LED. When the dark side is showing the disk masks the light from the LED. Preferably, an opaque shroud surrounds the LED and projects a short distance forwardly thereof to help define the cone in which light from the LED may be viewed in ON position. A side wall or said element projects forwardly of the rotation axis to mask the escape of light on that side transverse to the viewing direction. A second side wall may be placed on the other side for the same purpose or the adjacent element may provide the second wall.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: June 30, 1998
    Assignee: Mark IV Industries Limited
    Inventor: Veso S. Tijanic
  • Patent number: 5627563
    Abstract: A large multicolor display apparatus displays pictures and animations of high quality with multiple colors. The apparatus is used for advertisement and information purposes. The apparatus comprises unit blocks, which are divided into a plurality of sections. In each of the sections, there is arranged a multicolor display element having a rotary color display member. The color of each unit block is determined by the multicolor display elements disposed in the unit block. Each of the unit blocks, therefore, can display multiple colors, to improve the quality of images displayed on the apparatus. Since the multicolor display elements can be prepared in small sizes, they operate at high speed to display animations and make the apparatus thinner and lighter.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 6, 1997
    Assignees: Citizen Watch Co., Ltd., T.I.C.-Citizen Co., Ltd.
    Inventors: Tadahiko Nakagiri, Kazuo Teramoto, Mitsuhiro Okamoto
  • Patent number: 5627562
    Abstract: Apparatus for magnetically erasing and writing data stored in human readable displays of product label. The product label includes a display area with magnetic particles which can be oriented by external magnetic field in shapes including human readable figures and symbols. The so oriented magnetic particles retain their position when the external field ie removed, thereby storing the recorded information in the form of the figures and symbols. A portable apparatus includes electrically controllable write magnets for writing the figures and symbols, and an electrically controllable erase magnet for erasing previously recorded figures and symbols. The controllable magnets are mounted in a write/erase head which is self-adapting to the surface of the label.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: May 6, 1997
    Inventor: Rafael Skodlar
  • Patent number: 5609788
    Abstract: Magnetic paint additives are formulated from ferromagnetic particles having a mixed particle range of from about 0.01.mu. to about 74.mu., preferably from about 0.01.mu. to about 37 to 44.mu.. Iron powder is preferred. Preferred additives are formulated by blending the particles with a surfactant or surfactant mixture, or a surfactant and alcohol mixture, in amounts sufficient to suspend the particles. The additive may be blended with any oil-, latex-, or lacquer-based paint or coating to form a magnetic paint or coating having a viscosity substantially similar to the paint containing no particles and/or additive. Some embodiments employ from about 500 to about 2000 grams of particles per gallon of paint. One preferred additive embodiment comprises 2 to 3 parts 6 to 9 micron iron powder and 1 part surfactant. Surfaces such as wood, wall board, sheet rock, foam, plywood, plastic, fiberboard and the like so coated may be cut with conventional woodworking tools to form magnetic signs.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: March 11, 1997
    Inventor: Dayton J. Deetz
  • Patent number: 5600908
    Abstract: A display element is adapted to be arranged together with other similar elements in rows and columns for displaying signs and comprises a housing (2), a surface element (6) connected to said housing and movable between two positions for displaying different surface information (4,5), as well as a coil (9) optionally magnetizable in opposite directions, connected to the housing and adapted to actuate the surface element to occupy one or the other of said positions depending upon the direction of said magnetizing. The display element is adapted to be selected to magnetize the coil thereof by activating the column or row to which it belongs through lines interconnecting all display elements arranged in a column and a row, respectively.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: February 11, 1997
    Assignee: Mobitec AB
    Inventor: Bo Hogberg
  • Patent number: 5550558
    Abstract: A back illuminated array of display elements each of which comprises a vane rotatable between two positions by interaction between an electromagnet and a permanent magnet attached to the vane. The electromagnet includes a monolithic member of soft magnetic material having a U-shaped portion and a flange portion end is configured in such a way as to reduce the reluctance of the magnetic circuit comprised by the electromagnet and permanent magnet. The monolithic member can be arranged to provide a bearing for the rotatable vane.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: August 27, 1996
    Assignee: Unisplay S.A.
    Inventor: Hassan Paddy A. Salam
  • Patent number: 5526016
    Abstract: A large multicolor display apparatus displays pictures and animations of high quality with multiple colors. The apparatus is used for advertisement and information purposes. The apparatus comprises unit blocks, which are divided into a plurality of sections. In each of the sections, there is arranged a multicolor display element having a rotary color display member. The color of each unit block is determined by the multicolor display elements disposed in the unit block. Each of the unit blocks, therefore, can display multiple colors, to improve the quality of images displayed on the apparatus. Since the multicolor display elements can be prepared in small sizes, they operate at high speed to display animations and make the apparatus thinner and lighter.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: June 11, 1996
    Assignees: Citizen Watch Co., Ltd., T.I.C.-Citizen Co., Ltd.
    Inventors: Tadahiko Nakagiri, Kazuo Teramoto
  • Patent number: 5515075
    Abstract: A large multicolor display apparatus displays pictures and animations of high quality with multiple colors. The apparatus is used for advertisement and information purposes. The apparatus comprises unit blocks, which are divided into a plurality of sections. In each of the sections, there is arranged a multicolor display element having a rotary color display member. The color of each unit block is determined by the multicolor display elements disposed in the unit block. Each of the unit blocks, therefore, can display multiple colors, to improve the quality of images displayed on the apparatus. Since the multicolor display elements can be prepared in small sizes, they operate at high speed to display animations and make the apparatus thinner and lighter.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 7, 1996
    Assignees: Citizen Watch Co., Ltd, T.I.C. Citizen Co., Ltd.
    Inventors: Tadahiko Nakagiri, Kazuo Teramoto, Mitsuhiro Okamoto
  • Patent number: 5485043
    Abstract: In display comprising a display surface member with a plurality of display surfaces, and a permanent magnet type motor mechanism composed of a stator having magnetic members each forming a magnetic pole at one free end and excitation windings wound on the magnetic members and a rotor having a magnet member with a double-pole permanent magnet, the number of display surfaces of the display surface member is three or more odd number; the numbers of magnetic members and excitation windings of the rotor are also odd in accordance with the number of display surfaces and the magnet member of the rotor has a first magnetic pole opposed to the magnetic pole of one of the odd number of magnetic members and a second magnetic pole opposed to the magnetic poles of the other two adjacent magnetic members.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: January 16, 1996
    Inventors: Yoshimasa Wakatake, Masayuki Wakatake
  • Patent number: 5481816
    Abstract: A sign displaying characters in a manner emulating a digital display, in that the characters are formed using character elements to define parts of a particular font of characters. However, unlike a digital character that uses electrical control to activate character elements making up particular characters in the font, the present sign defines particular characters by covering the character elements not required for that character. The digital characters are formed on one or more sign inserts that removably fit within a sign body. The sign body includes a window exposing to view the character elements of each insert. The sign inserts may be of ferrous material and the cover members of magnetic material attachable to the inserts, so that the cover members are readily repositionable to change the message displayed by the digital characters.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: January 9, 1996
    Assignee: APCO Graphics, Inc.
    Inventors: Jeffrey B. Cobb, Jerry L. Kilgore
  • Patent number: 5475939
    Abstract: An electromagnetic display matrix includes easily replaceable modules mounted on a panel that is fitted with electromagnets, each module carrying an array of rotatable reflective vanes and a display sheet having an array of back-lit diffusers. The display sheet is removable by sliding it on the surface of the module, and the module is removable by sliding it on the surface of the panel. Tabs are provided by which the module can be released from the panel.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: December 19, 1995
    Assignee: Unisplay S.A.
    Inventor: Hassan P. A. Salam
  • Patent number: 5463827
    Abstract: A display device comprising a frame which is flexible along its length carrying at least one circuit board which can be flexed and which has electric circuit means for magnetically controlling electromagnetic display elements. By deliberately designing the frame so as to resiliently flex along its length, the display device can be resiliently flexed to conform to a curved transparent fronting screen, e.g. a vehicle windscreen.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: November 7, 1995
    Assignee: Hanover Displays Limited
    Inventor: David G. Williams