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| Number | Title | Issue Date |
| 7252269 | Asymmetrical low-profile bulkhead An asymmetrical bulkhead for a pressure vessel, tank or other storage facility is disclosed. The bulkhead is configured so that there is a high region extending past a cylindrical portion of the vessel on one side of the bulkhead, with a contour of the bulkhead tran... | 08/07/2007 |
| 5709580 | Control and power mechanism for model aircraft An electrically powered model aircraft is disclosed in which an on-board electric motor is powered from a ground based electric storage battery. Flight attitude of the aircraft is controlled by torsion control system in which a torsion member is attached ... | 01/20/1998 |
| 5683250 | Flight demonstrator A novel instrument for demonstrating flight principles is disclosed wherein a simulated aircraft is mounted to the end of a tube member by an arrangement wherein finger tip linear and rotational manipulation of a single control enables tail and wing contr... | 11/04/1997 |
| 5104344 | Line controlled electrically powered toy aircraft A toy aircraft electrically powered through control lines attached to a control handle held by a ground controller is improved by provision of a break resistant connection of electrical transmission wires which also function as elevator control cables to ... | 04/14/1992 |
| 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 |
| 4867725 | Horn for control surfaces of model aircraft A horn for attachment to a control surface of a model aircraft. The horn includes a spine to pass through the structure, a shoulder to bear against one face of the structure, and a unidirectional abutment body applicable to the spine to bear against the o... | 09/19/1989 |
| 4246724 | Aeroplane with circular flight This invention relates an electric aeroplane with circular flight whose mr can be controlled in flight by the pilot and whose endurance is increased in a general manner.... | 01/27/1981 |
| 4177984 | Captive flying toy airplane having simulated motor sounds A captive flying toy airplane is tethered to a boom pivotally mounted to a turntable for pivoting the boom for altitude adjustment of a toy airplane, the turntable being mounted to a pylon base housing containing drive gears therein. A control housing is ... | 12/11/1979 |
| 4103453 | Adjustable U-control handle This invention relates to an improved handle for attachment of a pair of control cables to a model airplane for control of the latter during flight. The handle consists of a gripping portion which has adjustable parallel bolts extending perpendicularly to... | 08/01/1978 |
| 4011684 | Control mechanism for model aircraft A torsional control system for model aircraft is disclosed in which a torsional control line extends from the aircraft to a control handle for rotating the control line, and carries all tensional forces between the aircraft and handle. A flexible shaft ha... | 03/15/1977 |
| 3955310 | Automatic control device for tethered model airplane A model airplane control device for automatically adjusting to wind conditions to maintain a generally level flight. The control device is responsive to changes in the inertial forces of the model airplane while in flight, eliminating the need for control... | 05/11/1976 |
