...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7264248 | Magnetic toss game A game of dexterous skill and accuracy involving a magnetically attractive pendulous game piece and an objective target which provides a magnetic field. The game is more specifically evolved from the known ring toss game so as to provide a unique challenge and numer... | 09/04/2007 |
| 7063588 | Wobbling toy A wobbling toy having a wobbling part which wobbles centering around a predetermined shaft; a solar battery power source; an integrated circuit for a watch powered by the solar battery; a magnet coil excited by a voltage pulse from the integrated circuit and switchi... | 06/20/2006 |
| 6396375 | Driving mechanism for liquid-containing ornament A driving mechanism is located below a transparent hollow casing of a liquid-containing ornament and includes a coupling member that engages with and rotates along with a rotary shaft of a movement of a music box located below the mechanism, stationary ma... | 05/28/2002 |
| 6193581 | Toy with moving parts The invention relates to a toy having a play base and an article typically depicting a human or animal character which is movable along said play base by manipulation of magnetic or mechanical mechanism which, preferably, are not in direct contact with sa... | 02/27/2001 |
| 6131318 | Aquarium-used toy structure An aquarium toy structure includes a back body and a front body with an observation window. A transparent water tank is inserted in the observation window and toy fish having magnets are placed in the water tank. A motor and a rotary shaft having magnets ... | 10/17/2000 |
| 6062938 | Magnetically driven animated display An animated display for use with magnetically-attractable, movable figurines includes a display surface and a magnet for attracting one of the figurines across the display surface. A drive mechanism is provided for intermittently moving the magnet in a cl... | 05/16/2000 |
| 6037853 | Apparatus for displaying the interactions between magnetic fields A device for displaying the loose coupling between magnetic fields is provided, comprising a first disk having a plurality of magnetic elements attached to the first disk so that the magnetic field of said magnets extend radially from an outer edge of the... | 03/14/2000 |
| 5886608 | Apparatus for displaying the interactions between magnetic fields A device for displaying the loose coupling between magnetic fields is provided, comprising a first disk having a plurality of magnetic elements attached to the first disk so that the magnetic field of the magnets extend radially from an outer edge of the ... | 03/23/1999 |
| 5685096 | Swimming toy fish aquarium having magnetic drive system for magnetically driving the toy fish in the aquarium A toy fish drive causes one or more toy fish to swim in a natural fashion in a transparent aquarium (viewing tank). A magnetic drive is connected to the external side of the wall or bottom portion of the aquarium and is supported from the side. The drive ... | 11/11/1997 |
| 5595141 | Animal scratching and entertainment device An animal scratching and entertainment device comprises a thin circular ridge 22, a platform 28 covered with carpeting 30, a motor 10, a bar magnet 14 coupled to the motor output shaft 12, a vertical post 35 covered with carpeting 36 connected to a horizo... | 01/21/1997 |
| 5463826 | Swimming toy fish aquarium having multiple toy fish and different magnet positions A marine display device include a liquid vessel containing one or more toy fish, each fish containing an air chamber to impart buoyancy to the fish and a magnetic member. A pair of spaced apart chambers project upwardly from the base of the vessel, and a ... | 11/07/1995 |
| 5419706 | Apparatus for forming images of non-visible elements underlying an opaque surface Apparatus for forming an image on a scanner includes a scanning screen formed of ferrofluidic material and one or more magnetic elements shaped to form a defined peripheral outline(s). The magnetic elements are disposed on one side of a surface and are no... | 05/30/1995 |
| 5405465 | Method of making a magnetic toy fish A method is provided for making a magnetic toy fish. The method comprises conformally joining two premolded plastic half-shell sections containing a magnetic member and a counterweight, and applying sonar energy across the joints to permanently join the h... | 04/11/1995 |
| 5360366 | Wobbling toy A wobbling toy includes a hollow platform, a first magnet unit a soft toy housing including a head and a body and a driving mechanism. The first magnet unit is disposed horizontally and mounted rotatably adjacent to the top surface of the platform. The dr... | 11/01/1994 |
| 5301444 | Swimming toy fish A marine display is provided having a housing and a transparent vessel at least partially filled with liquid. A magnetic animated marine life such as a toy fish is freely suspended in the liquid and at least one rotating magnet in the housing generate mag... | 04/12/1994 |
| 5189821 | Liquid wave display ornament Waves are imparted to liquids of different specific gravities having an ornament floating therein by a movable diaphragm provided with a magnet alternatively exposed to additional magnets of different polarities to alternatively attract and repulse the ma... | 03/02/1993 |
| 5052968 | Magnetically actuated amusement device A magnetically actuated amusement device comprising a flat magnet of vertically oriented polarity and a bar magnet of longitudinally oriented polarity; the flat magnet is contained in a base and the bar magnet is suspended above the center of the base by ... | 10/01/1991 |
| 5050876 | Magnetic fishing toy A fishing toy being magnetic, differently constructed and simplified in structure is provided. The toy includes a base plate mounting thereon rotating magnetic pieces, a vessel containing therein buoied fishes each of which connects thereto a connecting l... | 09/24/1991 |
| 4881335 | Door sign device A door sign device includes an actuator mounted on the inner door surface of a door that has inner and outer door surfaces so that a user can move the actuator between first and second actuator positions, and a follower mounted on the outer door surface s... | 11/21/1989 |
| 4878878 | Method and apparatus for stabilizing and powering walking animated figures A system for stabilizing, powering and controlling walking animatronic figures or vehicles by magnetically attracting and/or repelling the feet of such structures, using various cooperative combinations of interacting ferromagnetic plates and electromagne... | 11/07/1989 |
| 4852283 | Rotatably-twisting display device A display device includes: a base, a crystal ball mounted on the base, an inner cylinder plugged in an opening of the crystal ball, a musical base driving a lower disk having a plurality of magnets fixed thereon, a creature mounted on an upper disk rotata... | 08/01/1989 |
| 4690657 | Magnetically actuated amusement device An amusement device comprising first and second magnetic members; the first magnetic member being freelymovable in a base and the second magnetic member suspended from a tether and support arm attached to the base to a position within the influence of the... | 09/01/1987 |
| 4578044 | Magnetically movable model toy A toy including a movable model, components for generating and alternating a magnetic field in response to a direct current, a permanent magnet disposed in the generated magnetic field, and a component for transmitting movement of the permanent magnet in ... | 03/25/1986 |
| 4568301 | Magnetically controlled toy A flight unit is tethered by a thread to a base with the thread being attached to the flight unit at a point offset from the longitudinal center of gravity of the flight unit so that one end hangs lower than the other end. The flight unit has a bar magnet... | 02/04/1986 |
| 4486729 | Device to make an object float through the utilization of magnets A magnetic road is provided with a series of magnets having the same pole oriented upwards and an upstanding non-magnetic sidewall extending along at least one side. A magnetic object is provided having longitudinally spaced magnets which either have that... | 12/04/1984 |
| 4417725 | Method for transferring energy between suspended objects This invention is a method and apparatus for alternately transferring energy between two objects suspended from a common swiveled point. The first of the objects is put into motion in a circular fashion about the second object which is in a stationary con... | 11/29/1983 |
| 4159594 | Doll and simulated feeding apparatus A toy feeding spoon is provided for use with a baby doll having a head with a permanent magnet mounted therein adjacent the mouth portion thereof. The spoon includes a hollow bowl portion with a circular disc rotatably mounted therein and a top wall cover... | 07/03/1979 |
| 4052864 | Mobile jewelry mounting moved by unbalanced magnetic member A mechanism operative to allow various jewelry settings mounted to a ring, bracelet, or locket to freely rotate in an oscillating manner about a fixed center point. The mechanism includes a mounting base member having a perpendicular mounting stem affixed... | 10/11/1977 |
| 3968898 | Magnetostrictive closure member A bimetallic closure member comprised of two materials having dissimilar magnetostrictive characteristics does not require a hinge, when subjected to a magnetic field, or alternatively, when removed from a magnetic field, the materials contract or expand ... | 07/13/1976 |