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| Number | Title | Issue Date |
| 8056275 | Waterless system for providing fan-shaped fountain effect An apparatus for creating a water disk effect without water. The apparatus includes first and second disks, each having a first side with a substantially planar surface and a second side with a surface textured with a three dimensional (3D) pattern or topography inc... | 11/15/2011 |
| 7610704 | Display structure with moving attraction elements A tension fabric display structure incorporates segmented tubular framework permitting easy on-site assembly and disassembly and includes an integral drive motor coupled to a drive shaft that is supported for rotation within a framework tube. Each one of a plurality... | 11/03/2009 |
| 6971880 | Deformable drawing tablet A deformable drawing tablet in which contiguous longitudinal edge portions of a stack of individual elongate strips which are confined for relative sliding movement to form a drawing surface. A user can shift individual strips longitudinally to deform the drawing su... | 12/06/2005 |
| 6944983 | Changing color object A device displaying a polychromatic effect, comprising a light source a first linear polarizing layer optically coupled to said light source a first bi-refringent layer a second linear polarizing layer a motor coupled to said first linear polarizing layer so that sa... | 09/20/2005 |
| 6594929 | Display device A circular sealed panel 1 includes transparent walls 10-13 separated by spacer rings 14-16 to form intervening sealed chambers 18-20. The chambers are filled with different colored translucent liquids leaving colorless air spaces in each chamber. The pane... | 07/22/2003 |
| 6286873 | Visual display device with continuous animation A visual display device for providing a continuous, non-reversing animated sequence of displayed images to an observer with a separation member; a plurality of interposed coded images fixed to a first surface of the separation member to form an image memb... | 09/11/2001 |
| 6134818 | Apparatus for formation of visual sense effect An apparatus for the formation of a visual sense effect comprises a first object A having a plurality of windows disposed around an axis of rotation C and a second object B so disposed as to show part thereof through the windows W of the first object A, w... | 10/24/2000 |
| 5959554 | Traffic control device A traffic control device has a base (14) and a sign (16) rotatably carried by the base. The sign has at least two sides, one of which bears a "GO" indication and the other a "STOP" indication. A radio control means (11) causes a motor in the base to posit... | 09/28/1999 |
| 5806219 | Display device A display device consisting of a plurality of rotating segments each carrying elements of a message or sign, each rotating relative to each other, the center of rotation of each being contained within the circumference of its adjacent segment, either ecce... | 09/15/1998 |
| 5611162 | Apparatus for formation of visual sense effect and method for formation of visual sense effect An apparatus for the formation of a visual sense effect comprises a first object A having a plurality of windows disposed around an axis of rotation C and a second object B so disposed as to show part thereof through the windows W of the first object A, w... | 03/18/1997 |
| 5493292 | Traffic control system for construction zones and the like A traffic control signal particularly adapted for alternate one-way traffic situations such as are frequently encountered in highway construction zones whereby `STOP` AND "SLOW" sign panels can be alternately displayed with suitable control mechanism whic... | 02/20/1996 |
| 5355600 | Point-of-purchase displays and signs with light transmitting visual effects A point-of-purchase display assembly or signage includes gear discs which rotate about parallel axes and have light transforming material disposed on their outer faces. The discs are rotated (at about 10-20 rpm) to continuously change the visual perceptio... | 10/18/1994 |
| 5065156 | Computer controlled parking meter A computer-controlled coin parking meter for managing the use of a parking lot having up to about ten parking spaces. It includes a first display device which singularly identifies the parking places and push button switches for operating it; a second dis... | 11/12/1991 |
| 4989124 | Solar powered sign The present invention relates to an improved solar powered sign including one or more solar panels used to charge batteries which power various components of the sign. The sign may include a rotary display which is electrically powered and may also includ... | 01/29/1991 |
