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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 6615165 | Cable connections between an unmanned aircraft and a detachable data handling module A power and communications connection arrangement for a miniature, unmanned aircraft having data handling capability. The aircraft has a microprocessor for managing flight control, a GPS receiver, a communications radio frequency transceiver, and data han... | 09/02/2003 |
| 5810289 | High velocity propeller A propeller for fluid propulsion comprises a pair of substantially rigid blades which rotate about their longest dimension in opposite directions, the blades each being oppositely helically twisted along the longest blade dimension and positioned together... | 09/22/1998 |
| 5810288 | High velocity propeller A propeller for fluid propulsion (such as air or water) comprises a pair of substantially rigid blades. The blades are mounted for rotation about respective, separate, parallel rotation axes, with the axes being also substantially parallel to the longest ... | 09/22/1998 |
| 5807149 | Airboat systems and methods for increasing engine efficiency while reducing torque and noise An airboat propelling system is provided wherein a propeller is rotated by a hollow driven shaft. A further embodiment is provided wherein two propellers are rotated in opposite directions by counter-rotating coaxial hollow driven shafts. Floating stiffen... | 09/15/1998 |
| 5653404 | Disc-shaped submersible aircraft An aircraft of disc-shaped configuration provides the capability of vertical take-off and landing; straight horizontal flight; and three-dimensional maneuverability in the air by means of a plurality of counter-rotating lifting rotors assembled of fixed p... | 08/05/1997 |
| 5645250 | Multi-purpose aircraft Several innovative systems for an aircraft, and aircraft incorporating them, are disclosed. Features include inboard-mounted engine(s) with a belt drive system for turning wing-situated propellers; compound landing gear integrating ski, pontoon and wheel ... | 07/08/1997 |
| 5381985 | Wingtip mounted, counter-rotating proprotor for tiltwing aircraft A tiltwing aircraft, capable of in-flight conversion between a hover and forward cruise mode, employs a counter-rotating proprotor arrangement which permits a significantly increased cruise efficiency without sacrificing either the size of the conversion ... | 01/17/1995 |
| 5054998 | Thrust reversing system for counter rotating propellers A method of creating thrust reversal for an engine having counter-rotating forward and rear propeller blades. The forward blades are set at a positive angle of attack to produce an orderly flow of air toward the rear blades. The rear blades are set at a n... | 10/08/1991 |
| 4936526 | Foldable counter-rotating propfan blades An unducted turbofan engine comprises first and second fan blades journaled for rotation from a folded position substantially parallel to the axis of rotation of the engine to a radially orientated propulsion condition. A releasable shroud normally retain... | 06/26/1990 |
| 4934630 | Powered airfoil canopy aircraft Load lines connect chordwise spaced portions of a ram air inflated, airfoil canopy to spaced anchors connected to a pilot supporting vehicle frame on which a forward thrust producing unit is removably mounted. The geometry of the assembled aircraft enhanc... | 06/19/1990 |
| 4883240 | Aircraft propeller noise reduction In one form of the invention, a counterrotating pair of aircraft propellers produces noise in the form of a frequency-modulated carrier wave. The frequency modulation allows a designer to manipulate the energy spectrum of the noise in order to, for exampl... | 11/28/1989 |
| 4828205 | Device for carrying and lifting loads and moving same by aerodynamic lifting The disclosure describes a device for carrying and lifting loads and moving ame by aerodynamic lifting, rotary-wing aerial propulsion, having two coaxial rotors of same diameters rotating at the same speed and in reversed direction through a double crown w... | 05/09/1989 |
| 4796424 | Intake for a turbopropeller gas turbine engine The invention relates to intakes for turbopropeller gas turbine engines of the tractor type. A tractor turbopropeller gas turbine engine comprises a gas generator, an upstream propeller and a downstream propeller. The propellers are positioned upstream of... | 01/10/1989 |
| 4500053 | Propeller and engine mounting device A device for mounting an aircraft engine and a propeller on a longitudinal member or fuselage of a lightweight aircraft. A sleeve is disposed about the longitudinal member and securing devices which prevent longitudinal movement of the sleeve relative to ... | 02/19/1985 |
| 4426049 | Dual propeller and engine drive system for aircraft An aircraft drive system having two propellers, each of which is driven independently by a drive belt which is connected to a separate engine. The engines are mounted in cantilever fashion in a spaced relationship on a hollow sleeve. The sleeve is attache... | 01/17/1984 |
| 4402475 | Thrusters for airship control The use of thrusters at the bow and stern of an airship for control of the direction, attitude, and orientation of such an airship is described. The thruster utilizes an electric motor or a gas turbine for power. In the electric motor embodiment, the moto... | 09/06/1983 |
