Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7183939 | Shining fan structure for displaying images A shining fan structure for displaying images of patterns or characters by reflection mainly includes a fan. A plurality of blades of the fan are provided with reflective patterns or characters. Light-emitting elements are provided on the periphery of the fan base. ... | 02/27/2007 |
| 5504481 | Fail-safe stop light apparatus An apparatus for covering a face of a traffic light with a warning sign as a result of a power failure to the traffic light. A first member is rotatably mounted to one side of the traffic light and a second member is rotatably mounted to the other side of... | 04/02/1996 |
| 5475373 | Power conserving electronic parking meter A power conserving electronic parking meter system for receiving at least one type of payment element. The electronic parking meter has: a power source; a processor connected to the power source, the processor having at least an operational mode and a sta... | 12/12/1995 |
| 5191618 | Rotary low-frequency sound reproducing apparatus and method Apparatus for reproducing low frequency sound in response to an applied audio signal having a rotary acoustic radiator comprised of an enclosure having a cylindrical sidewall and end walls adjoining the sidewall and forming a cylindrical chamber. A rotor ... | 03/02/1993 |
| 5132675 | Display devices and display elements thereof A display device, e.g. for sports stadium or airport, consists of a large array of individual `pixels` representing single dots of a large display. Each `pixel` or display element consists of a number of sets of different colored vanes, some moveable to a... | 07/21/1992 |
| 4958150 | Display devices and display elements thereof A display device comprising a plurality of pixels arranged in a matrix to form a total image display area. Each pixel is comprised of a plurality of sets of two or more vanes with the vanes of each set lying in closely adjacent parallel planes. Driving me... | 09/18/1990 |
| 4949082 | High speed display device Display element has electromagnetic drive and two rotatable vanes which exhibit a display area to the viewer in ON mode and occlude it in OFF mode. Side walls may be used to prevent viewing the display area from the side in the OFF mode.... | 08/14/1990 |
| 4823490 | Signal display element for the selective display of information with electromagnetically actuated tilting plates Signal display element for the display of more than two informations by electromagnetically excited magnetic tilting plates, wherein at least two tilting plates in stable condition are arranged and supported in bearings on a baseplate for covering the sur... | 04/25/1989 |
| 4819357 | Information display devices A display device of the matrix type utilizes coincident current selection of display elements by the provision of row conductors (R) activating row electromagnets (D) and column conductors (C) activating column electromagnets (H). Each display element inc... | 04/11/1989 |
| 4800381 | Electromagnetic indicator device An electromagnetic indicator device which has a plurality of triangle-shaped vanes, asymmetrical in relation to the rotation axis, which are arranged on a plate in the form of a matrix. A polarization magnet is applied to the vane in the vincinity of the ... | 01/24/1989 |
| 4775863 | Signal display element for the display of more, than two informations for signal displays with electromagnetically excited tilting plates A signal display element for the display of more than two informations with electromagnetically excited magnetic tilting plates supported in bearings on a baseplate (1 ) and displaced axially in relation to one another, provided with at least one magnetic... | 10/04/1988 |
| 4514730 | Pipeline monitoring apparatus An apparatus is described for providing a visual display of the presence or absence of a change from the normal to the abnormal in the condition of a pipeline, for example an adverse change in the current supply to the pipeline for cathodic corrosion cont... | 04/30/1985 |
| 4462177 | A.C. connection circuit for display or indicator An electromagnetic display element is controlled by one or more high remanence cores which have control windings. A circuit is connectable to an A.C. outlet and provides to the windings a D.C. pulse in one sense (to switch the display element in one direc... | 07/31/1984 |
| 4163332 | Matrix display device A matrix display comprises an array of display elements arranged in vertical and horizontal rows. Each element comprises a vane pivotally mounted for movement between stable positions in one of which the vane covers a light-transmissive area contained in ... | 08/07/1979 |
