摘要:
A display-type viewer particularly adapted for use in commercial areas, such as retail shops, marts, and other populous areas, and in elevated, easily viewable locations, the same including continuously operable means for successively shifting the front picture or sign of a vertical pack of such item and successively and continuously exposing them to the view of the people in the locale.
摘要:
A display device includes a number of image elements which may be selectively exposed in accordance with a predetermined program to provide, in cooperation with other such elements, several graphic presentations. A programming mechanism is provided to enable such operation, and includes a motor and transmission means for transferring drive motion from the motor to the means for moving the image elements.
摘要:
A visual display system including two major members having a display member and a slider member whereby the slider member is fixedly and slidably attached to the display member. Information on the front and rear surfaces of the display member is selectively shown in accordance with the position of the slider member on the main display member. A pair of end stops are provided to control the maximum movement of the slider on the display member. Optional adhesive on the slider can serve as a means for affixing the system for display.
摘要:
A device such as for use in an advertising display intended to be hung and rocked to attract the attention of a viewer. The device includes a self-contained power supply permitting the device to be installed independently of electrical outlet means.
摘要:
A PAIR OF OPPOSITELY DISPOSED SUBSTRATES SANDWICH A FILM OF LIQUID CRYSTAL MATERIAL THEREBETWEEN. SIDE BY SIDE ELECTRODES, BETWEEN WHICH A VOLTAGE IS APPLIED TO SWITCH THE LIGHT TRANSMITTING CHARACTERISTICS OF THE LIQUID CRYSTAL MATERIAL, ARE DISPOSED ON A SINGLE ONE OF THE SUBSTRATES.
摘要:
An optical annunciator in which any one of alternate visual displays is revealed for viewing over the entire obverse surface of a lenticulate lens by the displacement of display means juxtaposed with the reverse surface of the lenticulate lens, the display means including alternate visual displays, each divided into portions, each portion of a display being located between adjacent portions of another display, and masking means for blocking from view those portions of the display means which do not form a part of the revealed display.
摘要:
A display device in which one or more prisms are moved between at least two fixed positions. Each prism has an image surface, an object surface and a reflecting surface and there is indicia placed adjacent the path defined by movement of each object surface. The indicia is visible at an image surface in only one position of the prism.
摘要:
A display is formed by directing an optical beam onto an acousto-optical medium having a single small region of substantial strain which is caused to traverse the medium controllably.
摘要:
WITH A MAGNETICALY ACTUABLE REVERSIBLE SIGN ELEMENT A STATIONARY RATCHET ELEMENT LIMITS ROTATION IN ONE DIRECTION AND HOLDS THE ELEMENT AT A POINT WHERE IT MAY ALWAYS BE ROTATED BY REVERSING AN EXTERIOR MAGNETIC FIELD.
摘要:
A HOLLOW TRANSPARENT BALL HAS TWO OPPOSITELY DISPOSED FLATS WHEREBY THE BALL CAN BE HELD IN PLACE BY RESTING ON EITHER FLAT. MEANS IN THE BALL PROVIDE A FIRST DISPLAY WHEN THE BALL RESTS ON ONE FLAT AND PROVIDE A SECOND DISPLAY AUTOMATICALLY CHANGED FROM EITHER ONE TO THE OTHER WHEN THE BALL IS INVERTED FROM ITS ORIGINAL POSITION.