Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8403721 | Toy set and relay segments A linking toy segment for pivotal securement to another linking toy segment is disclosed herein, the linking toy segment having: a base structure; an actuatable device secured to the base structure, the actuatable device being capable of movement from a first positi... | 03/26/2013 |
| 5725409 | Sound-emitting toppling game element and method for playing a game A game element, a game and a method for playing a game employing a plurality of game elements. The game element comprising a body that is disposed in contact with a playing surface and in an upright position relative to the surface. Incorporated in the bo... | 03/10/1998 |
| 5533919 | Toppling toy A toppling toy having a housing on which a plurality of toppling members are sequentially arranged, having a reset mechanism which resets the toppling members simultaneously. The housing has a top wall, a bottom wall, and a continuous side wall, defining ... | 07/09/1996 |
| 5405281 | Toppling tone-producing toy apparatus A toppling tone-producing toy apparatus for producing a plurality of tones comprising a plurality of tiles, each tile having a front face, a back face, and a peripheral edge; a plurality of striker bars, each striker bar coupled to the back face of a tile... | 04/11/1995 |
| 5349129 | Electronic sound generating toy The electronic device uses domino-shaped sound elements in combination with a support track to generate audible sounds or musical notes. The sound elements are placed in indentations on a support track in a selected sequence corresponding to the sequence ... | 09/20/1994 |
| 5122087 | Domino game A toppling toy game is provided which consists of an elongated flexible cord member and a plurality of plate members. A mechanism is for pivotally mounting each of the plate members to the elongated flexible cord member, so as to move about an axis of rot... | 06/16/1992 |
| 5083960 | Domino effect toy with return cascade A children's toy employing the domino effect in which the cascadable elements are hinged to linkable sections of track in such a manner that upon completion of the forward cascade a further cascade ripples through the same cascadable elements in the rever... | 01/28/1992 |
| 4998902 | Toppling toy An improved toppling toy is characterized by a resetting capability that comprises a plurality of finger tip operated actuators, each of which is associated with and coupled to an associated one of the pivotally mounted tiles for joint pivotal movement th... | 03/12/1991 |
| 4946342 | Article positioning device A device for positioning a plurality of generally elongate objects such as dominos on a flat surface in upstanding orientation and in evenly spaced relationship with each other includes an elongate structure for storing a plurality of dominos in face to f... | 08/07/1990 |
| 4880235 | Simulated animal racing track apparatus A simulated animal race track apparatus including a track and having a first and second plurality of animal-shaped members spaced apart in two lines and which are tippable from an upright position to a tipped position using a domino affect and simulating ... | 11/14/1989 |
| 4783918 | Cascading card holder A system for the vertical display of information provided on a plurality of cards or similar display members includes an extended heads on each display member. The extended heads are supported on each side by a pair of parallel slideways. Each slideway in... | 11/15/1988 |
| 4740185 | Toppling toy and construction set A toppling toy unit and construction set enables a plurality of toy units to be assembled into a variety of structures of different configurations. Each toppling toy unit includes end-connectable track-like base sections of different shapes and configurat... | 04/26/1988 |
| 4632664 | Toppling game apparatus A toppling game apparatus having a plurality of connectable toppling units is disclosed. The toppling units each contain a toppling member attached to a base member in a manner permitting pivotal rotation of the toppling member. The axis of pivotal rotati... | 12/30/1986 |
| 4438586 | Game device with template for arranging objects A game apparatus includes a vertically adjustable template with a plurality of openings in a preselected configuration. A plurality of generally elongated objects may be placed in an upstanding orientation on a supporting surface within the openings defin... | 03/27/1984 |
| 4437260 | Domino toppling toy A domino toppling toy is provided which is capable of toppling a plurality of domino pieces in domino trains located at different vertical elevations. The last domino piece in a lower domino train actuates an actuation lever and hence a locking lever. The... | 03/20/1984 |
| 4428147 | Domino toppling toy A domino toppling toy is provided which comprises a housing, an actuation lever and a plurality of domino toppling levers. The actuation lever is pivotally mounted on the housing and is responsive to the toppling movement of one domino train. The pluralit... | 01/31/1984 |
| 4423876 | Game-toy anthropomorphic (human-robot-shaped) dominoes This game-toy, a domino-man, is a human-robot-shaped figure to be used either in playing dominoes by formal game rules, or in construction, stacking and knock-over play usually done with traditional domino pieces. The domino-dot number equivalents are pri... | 01/03/1984 |
| 4416247 | Domino toppling toy There is provided a domino toppling toy which includes a movable member capable of moving toward and away with respect to the first domino piece in the domino train. The movement can be held at the position away from the first domino in a normal position ... | 11/22/1983 |
| 4358274 | Game and teaching device construction A game and teaching device construction is described to include a plurality of indicia bearing blocks bound together by a pair of flexible straps. Each block is generally shaped in the form of a solid rectangle whereby a first strap is affixed to each blo... | 11/09/1982 |
| 4248433 | Chain reaction falling playing pieces board game An action game in which a plurality of elongated playing pieces are placed in upstanding condition on a game board in selected positions in an attempt to form a continuous unbroken line of playing pieces from one player's king playing piece at a playing s... | 02/03/1981 |
| 4138797 | Sequential multiple toppling pull toy A multiplicity of rectangular base blocks or toppling member carriers are drilled to form aligned bores for the reception of a flexible pull cord and are spaced apart from each other by ovoid bead-like spacers. Mounted on each base block or toppling membe... | 02/13/1979 |
| 4047322 | Amusement device of pictorial display An amusement device of pictorial display including a base member with markings thereon depicting an object and with the markings being located in rows for identifying locations of elongated blocks which are standable on end along the rows. The blocks can ... | 09/13/1977 |
