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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 4079629 | Oil to gasoline ratio measuring device Various two cycle engines require different gasoline to oil ratios for proper operation of the engine. These ratios may vary as much as from 15 to 1 to 50 to 1 or possible even greater. Usually the gasoline used is contained in one to two one-half gallon ... | 03/21/1978 |
| 4040790 | Moisture and rust detector for hydraulic control systems Steam turbine hydraulic control system utilizing hydraulic fluid more dense than water accumulates any moisture present as vapor over the fluid reservoir. A detector for such moisture vapor which indicates unacceptable moisture admixed with the hydraulic ... | 08/09/1977 |
| 4026239 | Grease level indicator A threaded plug in a grease filling opening on the periphery of a rotating sleeve is formed with a tube-shaped extension having lateral openings near its base, whereby the plug may be used as a grease level indicator.... | 05/31/1977 |
| 4024644 | Gauge for measuring the headspace in a container A gauge for determining the headspace in a liquid-filled container. The gauge is composed of a flat bar of transparent material having a beveled upper horizontal edge, and a series of probes of progressively increasing length extend downwardly from the lo... | 05/24/1977 |
| 4021943 | Pressing iron water level gauge In the preferred form, the present invention is directed to a water gauge which indicates the amount of water in the reservoir of a pressing iron. The gauge is so positioned with respect to the reservoir and the contents thereof that the indication functi... | 05/10/1977 |
| 4023137 | Device for indicating the oil level in a combustion engine crankcase A device for indicating the oil level of an internal combustion engine crankcase comprises a crankcase oil level sensor electrically connected to a change-over switch provided in the electrical connection between the engine fuel tank level sensor and its ... | 05/10/1977 |
| 4020785 | Plant moisture indicator A plant moisture indicator is provided comprising a piece of wood cut across the grain with a moisture retardant substance applied to one side of the indicator, whereby the indicator will tend to bend in the presence of moisture and straighten up when dry... | 05/03/1977 |
| 3987294 | Illuminated gasoline tank A transparent fuel tank for motorcycles and like vehicles, in which an illuminator provides light to the plastic wall, not only giving a clearer indication of the level of liquid in the tank, but also having decorative and safety advantages as well.... | 10/19/1976 |
| 3972234 | Liquid level indicator A liquid level indicator as applied to an internal combustion engine, having a crankcase forming an oil reservoir therein, has conduit means extending downwardly generally into the reservoir with a lower open end of said conduit means being positioned at ... | 08/03/1976 |
| 3935835 | Apparatus for checking the level of liquid in containers Apparatus for checking the presence of liquid at a predetermined level in a container is disclosed. The apparatus comprises valve means disposed externally of such container, manually operable suction means to generate vacuum pressure and connected to the... | 02/03/1976 |
