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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 |
| 8011896 | Fan system A fan system is electrically connected with a driving source generator and includes a first fan, a second fan and an energy storage element. The second fan is rotated by the first fan for generating an electric energy. The energy storage element is electrically conn... | 09/06/2011 |
| 7753659 | Axial cam air motor A motor assembly including a body that includes a plurality of cylinders and a plurality of air channels and a conical shaped piston slidably coupled within each of said plurality of cylinders. The motor assembly also includes a rotatable timing shaft positioned con... | 07/13/2010 |
| 7347673 | Fluid machine served as expansion device and compression device A fluid machine is served as an expansion device and a compression device. The fluid machine compresses gas in an operation chamber upon functioning as the compression device. The fluid machine expands the gas in the operation chamber upon functioning as the expansi... | 03/25/2008 |
| 7275916 | Integrated engine/compressor control for gas transmission compressors A method and system for controlling an engine that drives a reciprocating compressor, such as the large compressors used for natural gas transmission. A controller receives data from the compressor representing operation conditions, such as load step, suction pressu... | 10/02/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 6994528 | Air compressor with improved hand portability An air compressor package having improved stability and portability. The air compressor package is positionable in an operational position, wherein the air compressor package is positioned on a base, and a transport position, wherein the air compressor package may b... | 02/07/2006 |
| 6942464 | Air compressor with improved hand portability An air compressor package having improved stability and portability. The air compressor package is positionable in an operational position, wherein the air compressor package is positioned on a base, and a transport position, wherein the air compressor package is ha... | 09/13/2005 |
| 6926814 | Automatable measuring, cleaning and calibration device for pH-electrodes or electrodes for measuring redox potentials An automatable measuring, cleaning and calibrating device for pH-electrodes or electrodes for measuring redox potentials, specifically in process engineering, having an electrode armature which keeps the measuring electrode in an operating position or in a maintenan... | 08/09/2005 |
| 6406270 | Fuel tank and belt guard arrangement for compressor An air compressor includes a fuel tank at least partially supported by the air compressor guard, allowing for a larger fuel tank and eliminating the need for a separate fuel tank support. The air compressor includes a gasoline engine connected to an air p... | 06/18/2002 |
| 5947697 | Monoblock gas compressor for pressurized gas A monoblock gas compressor for use in compressing gas having a supply pressure greater than the atmospheric pressure is provided. The compressor includes a compressor head mounted to a cylinder block such that a plurality of valve receiving bores formed i... | 09/07/1999 |
| 5400751 | Monoblock internal combustion engine with air compressor components Monoblock engine/air compressor combinations, particularly those providing high pressure gas, experience problems in lubricating the piston pins connecting the compressor piston assemblies to the engine connecting rods. To alleviate this problem, addition... | 03/28/1995 |
| 5230609 | Air brake system for a vehicle An air brake system for a vehicle including a valve disposed between a fuel tank and a fuel pump and a cylinder of an engine for switching fuel flow from the fuel pump to either the fuel tank or the cylinder, another valve coupled between the cylinder and... | 07/27/1993 |
| 5090867 | Rotating fluid machine for reversible operation from turbine to pump and vice-versa A rotating fluid machine for reversible operation from turbine to pump and from pump to turbine having a simple structure which allows for easy manipulation when reversing operation, and having a low change in efficiency when the machine operates in rever... | 02/25/1992 |
| 4961691 | Integral gas compressor and internal combustion engine An integral gas compressor and internal combustion engine. The compressor is built by converting a portion of an internal combustion engine to a compressor by removing the original engine head and valve train and replacing these with a compressor head ass... | 10/09/1990 |
| 4781104 | Rotary fluid energy translation device A rotary fluid energy converter which can be used either as a hydraulic pump or as a motor, can recover energy with high efficiency. The converter has a spring for biasing a pintle, which supports a torque ring, in one direction, and a hydraulic actuator ... | 11/01/1988 |
| 4700663 | Air compressor A novel air compressor utilizing a simple modification of an opposing 4 cylinder air cooled Volkswagen internal combustion engine.... | 10/20/1987 |
| 4631000 | Variable displacement hydraulic pressure intensifier A hydraulic pressure intensifier for boosting normal system pressure in a hydraulic system to a higher level in order to increase the force provided by a pressure-operated actuator. The hydraulic pressure intensifier has a motor-pump unit with a rotatable... | 12/23/1986 |
| 4536132 | Gas compressor A gas compressor drivably connected to an engine operates to supply compressed gas to a tank. The compressor has a housing including a commercial air cooled internal combustion engine block and cooling air system having a single cylinder chamber accommoda... | 08/20/1985 |
| 4463554 | Method of generating gas pressure in an internal combustion engine, and apparatus for carrying out this method In an internal combustion engine a rotary gas motor, driven by the intake gas of the engine, drives pump providing secondary air to the engine exhaust at low engine load, and at high load a clutch connects the pump and the motor to the engine shaft, the o... | 08/07/1984 |
| 4391568 | Gas compressor A gas compressor drivably connected to an engine operates to supply compressed gas to a tank. The compressor has a housing including a commercial air cooled internal combustion engine block and cooling air system having a single cylinder chamber accommoda... | 07/05/1983 |
| 4349320 | Piston compressor derived from a reciprocating thermal engine A compressor of the piston-type enclosed in a sealed housing. The specific cylinder head of the compressor is completed by an assembly of mass-produced internal combustion engine parts and the compressor is driven through the wall of the housing from an e... | 09/14/1982 |
| 4255090 | Manufacture of powered air compressors The conversion of a multi-cylinder liquid cooled internal combustion engine into a powered air compressor by placing inserts into parts of the cylinder head above certain of the cylinders after removal of the valve gear therefrom. The insert seals the coo... | 03/10/1981 |
| 4209998 | Air source heat pump with displacement doubling through multiple slide rotary screw compressor/expander unit A closed loop refrigeration system such as an air source heat pump includes a hermetic screw compressor and a helical screw rotary expander connected to an electric induction drive motor. The closed loop refrigeration circuit permits an air source evapora... | 07/01/1980 |
| 4205945 | Unitized fluid delivery system and method of operating same A centrifugal boost pump, a primary centrifugal pump and a dynamic machine are driven through a common drive shaft. At low speeds, such as during pump start-up, the elements are in the aforementioned fluid serial relationship such that the dynamic machine... | 06/03/1980 |
| 3963379 | Convertible engine-air compressor apparatus for driving a vehicle A vehicle is provided with an engine which is adapted to serve as an air compressor. Air supply apparatus is provided for interrupting the supply of fuel to the engine and for supplying air to the engine. Compressed air from the engine is delivered to an ... | 06/15/1976 |
| 3958900 | Convertible engine-air compressor apparatus mounted on a vehicle for driving said vehicle A combination engine and air compressor apparatus in which an engine action and an air compression action are changed over to each other by changing valve timing of inlet and exhaust valves.... | 05/25/1976 |
