Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8419439 | Apparatus and related methods for the controlled illumination of a convex surface Illumination provided to the interior of a convex surface can be controlled using a plurality of internal barriers separating light sources such as light emitting diodes. Such controlled illumination can simulate phases of the moon using logic which can be limited t... | 04/16/2013 |
| 8133058 | Apparatus and related methods for the controlled illumination of a convex surface Illumination provided to the interior of a convex surface can be controlled using a plurality of internal barriers separating light sources such as light emitting diodes. Such controlled illumination can simulate phases of the moon using logic which can be limited t... | 03/13/2012 |
| 7251198 | Moon phase wheel chart A moon phase wheel chart for determining the phase of the moon for a particular date, past, present, or future, has three wheel members adapted to rotate about a common center. The first wheel member has in its center indicia representing the phases of the moon and ... | 07/31/2007 |
| 7121667 | Geometrically correcting method and system for image distortion with the aid of an auxiliary line An auxiliary line created on a computer is displayed on a user interface screen, and is projected onto a curved screen by a projector. The user adjusts real numbers substituted into variables of an approximate expression held in the computer for drawing auxiliary li... | 10/17/2006 |
| 6909543 | Foveated display system An improved theater geometry which is capable of providing improved image resolution and improved image contrast over prior systems is achieved with a unique projection geometry and image re-mapping technique. The projected image is provided with a continuously vari... | 06/21/2005 |
| 6821125 | Planetarium A planetarium has a planet projection system comprising: a rotatable stage positioned concentrically with a precession axis of a fixed star projection globe and performing an X-axis motion; and a sleeve-type planet projector positioned at an eccentric position with ... | 11/23/2004 |
| 6769778 | Slide projector A slide projector that is portable, easy to use and suitable for use by an individual, or individuals in the home. The slide projector comprises means in which to project an image perpendicularly from a slide onto a projection surface. In use, the projected image of... | 08/03/2004 |
| 4881899 | Sunshine simulator for small scale models A sunshine simulator and a method for using same for simulating sunshine on a small scale model attached to the simulator. The model is positioned on a support plateau which is pivotally attached to a support post for adjustable displacement of the platea... | 11/21/1989 |
| 4726773 | Device for depicting constellations on a ceiling Constellations are depicted on a ceiling with phosphorescent indicators of a predetermined planar surface area, which indicators are proportionally related to each other by a constant multiplication factor, to depict various star brightness magnitudes. A ... | 02/23/1988 |
| 4568287 | Light charged celestial simulation device A body portion of non-luminous material has an enlarged surface area on which design elements are applied of luminous material. The design elements are shaped to depict celestial bodies and the arrangement is such that when these design portions are charg... | 02/04/1986 |
| 4271604 | Portable planetarium A portable planetarium is disclosed for ascertaining the position of the sun, the planets and their satellites and the stars throughout the year. The planetarium includes a frame having a configuration defined by a frustrum of a cone with a substantially ... | 06/09/1981 |
| 4194306 | Planetarium educational device A planetarium educational device which illustrates the relative positioning and movement of the earth, moon, sun and other celestial objects in the solar system. The device also provides an illustrative means for depicting the changes in the ocean tides w... | 03/25/1980 |
| 4083121 | Universal planisphere, sight reduction finder and identifier, guidance and computer system A planisphere including a navigation west and east dial and scales, sky map, Greenwich and transit indicator dials having an Ariers indicator, a Greenwich indicator and a transit scale indicator respectively thereon, and a reference rule, constructed and ... | 04/11/1978 |
| 4012851 | Universal planisphere complete guidance and computer system A planisphere for providing displays and effecting calculations in both astronomy and navigation and the method of operation thereof. The planisphere structure includes a plurality of substantially circular, concentric, flat dials which are progressively ... | 03/22/1977 |
