Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7347119 | Turning machine To provide a turning device that involves a small number of components, is inexpensive, and can be easily operated. A turning device (1) is composed of a base plate (2) and a rotating case (10) rotatably provided on the base plate (2 | 03/25/2008 |
| 7238078 | Airplane types changeable model flight toy A changeable model flight toy which can simulate the takeoff and landing attitudes and flight attitudes at low cost in accordance with different types of airplanes is provided. A plurality of airplane bodies having different outer appearance forms which can be maint... | 07/03/2007 |
| 7156054 | Horse walker/animal conditioning system An animal walker or conditioning system. The preferred embodiment of the present invention contemplates a horse walker or conditioner incorporating a direct drive hydraulic motor, the motor configured to provide a powered bearing surface to support and axially rotat... | 01/02/2007 |
| 6572482 | Radio frequency controlled tethered aircraft The present invention 10 discloses a model aircraft 14 for preventing the fouling of control lines for tethered aircraft controlled by means of radio frequency transmission 12. The present invention 10 has a coupling 22 for model aircraft attached by a se... | 06/03/2003 |
| 5664785 | Airplane game A toy airplane game involving a central upright member, flying device, airplane tether mechanism attached to the flying device, and landing area, wherein the operator controls the operation of the flying device in takeoff, flying and landing to different ... | 09/09/1997 |
| 5102126 | Airplane flying game A toy game consists of a map hung beneath a ceiling or a pole, a model aircraft suspended from a map by flexible, plastic string, and a double remote control--one for flight control and another for altitude control. It is operated indoors or outdoors. The... | 04/07/1992 |
| 5030156 | Electronic remote control and method for control-line airplane models A control apparatus for model airplanes is presented which includes a remote radio transmitter which communicates with a rotatably mounted receiver positioned on a fixed pylon. The receiver has a control handle joined thereto whereby control lines are act... | 07/09/1991 |
| 4688787 | Captive flight device A device for the captive flight of a propeller-driven model airplane is disclosed. The device having a fixed arm with a pulley mounted on the free end thereof, a swingable arm with a motor mounted on the free end thereof, a cable attached to the motor and... | 08/25/1987 |
| 4238791 | Model aircraft with altitude change indicating means A model aircraft with wireless earth-to-craft control. A device is aboard to emit signals indicating altitude change and visible by the operator on earth, this device being triggered operatively by signals produced by an air-pressure transducer of small s... | 12/09/1980 |
| 4161843 | Electrically powered toy aircraft The specification describes a toy including a flying body and a flexible cable interconnecting the flying body and means for operating the flying body. The flying body is provided with four identical propellers rotatable in the horizontal plane and arrang... | 07/24/1979 |
| 4153243 | Remote control device for model airplane A remote control device for a model airplane including a mast, a rotary bracket, a yoke member projecting upward from and rotatable with the bracket, and a guide arm having its proximal end journaled in said yoke member for swinging movement through a com... | 05/08/1979 |
| 4138103 | Model aircraft control system A control mechanism for captive model airplanes enabling the operator to remain outside the flight circle while controlling the flight of the plane including a flexible tower mounted on a fixed base, and on the tower a rotating disc, a bracket assembly ha... | 02/06/1979 |
| 4095784 | Toy aircraft system A toy aircraft system with an aircraft powered by an electrically driven propeller and motor mounted in the aircraft which, in turn, is mounted on a boom which can rotate about a central point and move up and down in response to changes of the vertical po... | 06/20/1978 |
