Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 6520854 | Roulette wheel assembly and table arrangement A roulette wheel assembly and table arrangement includes a roulette wheel rotatably mounted in a wheel bowl, and driven by an electric motor. Thirty seven slot compartments are located around the wheel circumference to receive a roulette ball. In operatio... | 02/18/2003 |
| 6047965 | Randomized roulette wheel In a roulette wheel assembly, canoes, which equiangularly spaced around a circle intermediate a wheel and an upper track where travel of a roulette ball begins, are modified. Air outlets are provided in each canoe. Air from a source is controlled to provi... | 04/11/2000 |
| 6042114 | Gaming machine A gaming apparatus is provided including a rotating wheel assembly having an inner portion with a plurality of sections and an outer portion with a plurality of ball receiving areas. A spinning assembly is rotatably mounted on the rotating wheel assembly ... | 03/28/2000 |
| 5836583 | Detection system for detecting a position of a ball on a roulette wheel A detection system for detecting the position of an object of a movable member and, In particular, for detection the position of a ball in a moving roulette wheel which has a light source for emitting visible light which is modulated. A sensor is provided... | 11/17/1998 |
| 5785594 | Spinning wheel amusement device A spinning wheel amusement device having a receiving guide for receiving a token or coin which is deposited on to a spinning wheel which is rotated via a motor. The spinning wheel is provided with a plurality of receptacles spaced about its periphery for ... | 07/28/1998 |
| 5553851 | Revolving rings gaming apparatus Gaming apparatus in which a ball is traveled onto a revolving surface has a plurality of rings of differing diameters which jointly form the revolving surface. The rings are centered on a vertical axis of rotation and may rotate in opposite directions or ... | 09/10/1996 |
| 4941665 | Rotator game device A rotator game device for the generation of randomly selected data has a circular housing with a recess, and a base wheel rotatable within the housing recess upon a bearing arrangement. The base member has an upstanding handle member fitting over the bear... | 07/17/1990 |
| 4373281 | Device for displaying indicia A device for displaying indicia is provided comprising: (a) at least one cover member having at least one visual display means on at least one surface thereof; and (b) at least one display member slidably movable by gravity with respect to at least one of said... | 02/15/1983 |
| 4206921 | Roulette-type game apparatus Roulette-type game apparatus comprising a housing consisting of a base and a transparent hood, a disc for providing a plurality of game fields, a drive actuating and attenuating mechanism consisting of a rotatably mounted drive spindle, a weight slidable ... | 06/10/1980 |
