Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8079343 | Positive-displacement turbine engine A positive-displacement turbine engine comprising two rotors, exhaust opening for discharging exhaust gas, intake opening for receiving air and fuel or air-fuel mixture, turbine channels, turbine shaft, plurality of turbine blades, and spark plug. The rotors share a... | 12/20/2011 |
| 7909013 | Hybrid cycle rotary engine An internal combustion engine includes in one aspect a source of a pressurized working medium and an expander. The expander has a housing and a piston, movably mounted within and with respect to the housing, to perform one of rotation and reciprocation, each complet... | 03/22/2011 |
| 7866296 | Rotary piston machine with an oval rotary piston An internal combustion engine having at least one working chamber limited by a piston and means for fuel injection, wherein said fuel injection means are arranged in a separate ignition chamber communicating with said working chamber, and means for tuning said ignit... | 01/11/2011 |
| 7421998 | Modular engine An engine is shown and disclosed having individual components that can be optimized depending upon the situation, application or desired performance of the engine. The individual components perform the intake, compression, combustion, expansion and exhaust elements ... | 09/09/2008 |
| 7341042 | Rotary positive displacement control system and apparatus A rotary positive displacement control system and apparatus includes a transmission assembly, at least a compression assembly and buffer assembly, and an expansion assembly, the buffer assembly disposed between the compression and expansion assembly. The compression... | 03/11/2008 |
| 7314035 | Rotary vane engine and thermodynamic cycle A heat engine having a rotary vane compressor and a rotary vane turbine operates in a highly efficient thermodynamic cycle which includes a power expansion phase up to ambient pressure and a limited temperature constant volume combustion followed by a constant press... | 01/01/2008 |
| 7234924 | Rotary combustion engine with device for conveying lubricating oil A rotary combustion engine with one or more working units, which include a peripheral housing, a front housing plate, a rear housing plate on the output side, an eccentric shaft, and a piston, where the eccentric shaft includes an eccentric, and front and rear seali... | 06/26/2007 |
| 7185625 | Rotary piston power system The rotary piston power system includes a housing having a drum and a cover rotatably mounted on the drum. The drum has high pressure and low pressure ports defined in its peripheral wall and a central separator wall having arcuate end faces and a pair of semicylind... | 03/06/2007 |
| 7117839 | Multi-stage modular rotary internal combustion engine A three-stage internal combustion rotary engine, comprised of: a compressor feeding compressed air to a combustor for compression, fuel injection, combustion, and expansion of gases which rotate the rotor. The combustor rotor generates torque and drives the compress... | 10/10/2006 |
| 7118361 | Rotary pistons A rotary piston for use in pumps or motors, the piston having a radially movable vanes seated within the pumps rotor. The vanes are biased outwardly and forced inwardly by a cam action of the interior wall of the housing of the piston. Operation of the piston may be... | 10/10/2006 |
| 7117840 | Rotary piston machine with an oval rotary piston guided in an oval chamber A rotary piston machine with a housing forming a prismatic cavity with a cavity wall. The cross section of the prismatic cavity is a cavity oval. A rotary piston is guided for rotary movement in the cavity. The rotary piston moves in consecutive intervals of motion ... | 10/10/2006 |
| 7111606 | Rotary positive displacement device A device to convert energy having exterior and interior rotors where the number of legs (Λ) of an interior rotor divided by the number of chambers (X) defined by the fins of the outer rotor is equal to the effective radius of the inner reference circle ri | 09/26/2006 |
| 7100566 | Operating method for a rotary engine and a rotary internal combustion engine The invention relates to propulsion engineering and particularly to internal-combustion engines. The problem solved by the present invention is improving fuel efficiency and ecological compatibility, as well as providing the ability to set advance ignition at higher... | 09/05/2006 |
| 7073477 | Gorski rotary engine A rotary engine is provided with solid vanes which extend through the rotor and engage opposing interior wall portions of the stator housing. A series of grooves in the interior wall permit the expanding exhaust gases to by-pass the minimal surface area of vanes pro... | 07/11/2006 |
| 7040278 | Integrated microturbine system A microturbine for the generation of mechanical and electrical power comprising a positive displacement axial vane rotary compressor and an axial vane rotary expander. The compressor and expander are joined by a common shaft. The system further includes at least one... | 05/09/2006 |
| 6988482 | Dual rotor internal combustion engine An engine including a housing formed with a pair of side-by-side intersecting substantially cylindrical cavities, and a pair of counter-rotating power rotors rotatably mounted within the cavities. The pair of power rotors include intermeshing lobes that each define ... | 01/24/2006 |
| 6978758 | High Efficiency rotary piston combustion engine A computer controlled rotary piston engine includes a blower housing containing a rotatable impeller assembly, for pushing ambient air into the housing, and forcing the air to pass through a normally open valve mechanism into a combustion chamber. A plurality of fue... | 12/27/2005 |
| 6907855 | Geroter type internal combustion engine An internal combustion engine including a housing, an intake port defined in the housing, an exhaust port defined in the housing, and a generally cylindrical combustion chamber defined in the housing. The combustion chamber communicates with the intake port and the ... | 06/21/2005 |
| 6799549 | Combustion and exhaust heads for fluid turbine engines An internal combustion rotary engine which includes a housing encased rotor having: cam actuated inwardly and outwardly extending vanes, a combustion chamber communicating with a fluid inlet port to the vanes within the housing, and an exhaust chamber ... | 10/05/2004 |
| 6725644 | Combined input and output system for an internal combustion engine and turbine power plant The engine has an input system formed with a fluid displacement pump that enables substantially continuous pumping from a low-pressure side to a high-pressure side substantially without any backflow or backpressure pulsations. The output system, in one embodiment, i... | 04/27/2004 |
| 6688276 | Internal combustion engine of circular impulsion The engine includes a cylindrical rotor, set up in the interior of a stator, limited by two flat surfaces forming a first chamber to provided the admission phase and the compression phase and another chamber to provided the expansion phase (D1) and the ex... | 02/10/2004 |
| 6564172 | Method and apparatus for onboard locomotive fuel usage indicator A method for determining the ideal fuel usage value of a locomotive or other off-highway vehicle is disclosed. The time spent in each of a plurality of operating modes is determined and applied to an algorithm for calculating the ideal fuel usage associat... | 05/13/2003 |
| 6526937 | Economical eccentric internal combustion engine An eccentric engine has been used for many different purposes, such as in a piston motor, in a steam engines in a compressor and pump. An eccentric engine include two or more cylinders (stator and rotors) located one within other. The stator has two secti... | 03/04/2003 |
| 6481410 | Rotary piston engine/positive displacement apparatus An engine displacement device including a casing with two internal overlapping rotor chambers, and rotors within the rotor chambers which are arranged to contra rotate to provide internal combustion and/or compression chambers. The casing provides for pri... | 11/19/2002 |
| 5755196 | Rotary positive displacement engine An engine has a pair of rotors, both housed within the same housing. The housing has an interior cavity which is preferably spherical but need only be partially spherical, the remainder at least having rotational symmetry. Each rotor is mounted on an axis... | 05/26/1998 |
| 5709188 | Heat engine A rotary vane combustion engine, having a compressor, a combustion chamber, an expander, sensors for sensing critical conditions, and a microprocessor for controlling the engine responsive to sensed conditions. Projection of vanes from the compressor or e... | 01/20/1998 |
| 5568796 | Rotary compressor and engine machine system A rotary device employs an outer housing having an interior surface with a central axis associated therewith, an outer hub assembly, disposed inside said outer housing, having a central axis associated therewith located at a distance from the central axis... | 10/29/1996 |
| 5537974 | Method and apparatus for using exhaust gas condenser to reclaim and filter expansion fluid which has been mixed with combustion gas in combined cycle heat engine expansion process A continuous combustion, pinned vane type, positive displacement, rotary compressor and expander engine system comprises a compressor which outputs compressed air, a combustor which effects continuous combustion of a combustion gas mixture containing fuel... | 07/23/1996 |
| 5522356 | Method and apparatus for transferring heat energy from engine housing to expansion fluid employed in continuous combustion, pinned vane type, integrated rotary compressor-expander engine system A continuous combustion, pinned vane type, positive displacement, rotary compressor and expander engine system comprises a compressor which outputs compressed air, a combustor which effects continuous combustion of a combustion gas mixture containing fuel... | 06/04/1996 |
| 5511525 | Sliding-blade heat engine with vortex combustion chamber A sliding-blade heat engine having a vortex combustion chamber and oval-shaped turbine and compressor chambers with cylindrical turbine and compressor rotors rotatably mounted eccentrically therein, Each rotor has at least two rectangular blades slidably ... | 04/30/1996 |
| 5427068 | Rotary compressor and engine machine system A rotary device employs an outer housing having an interior surface with a central axis associated therewith, an outer hub assembly, disposed inside said outer housing, having a central axis associated therewith located at a distance from the central axis... | 06/27/1995 |
| 5410998 | Continuous external heat engine A thermal engine utilizing a positive displacement rotary expander and preferably a positive displacement rotary compressor in conjunction with an external substantially steady-state thermal source, such as a continuous fuel combustor, the external source... | 05/02/1995 |
| 5379736 | Gas compressor/expander The invention is an air compressor and a gas expander. The compressor/expander has an inner chamberwall-forming member attached eccentrically to a drive shaft and being rotatable with it, an outer chamberwall-forming member attached eccentrically to the d... | 01/10/1995 |
| 5357923 | Rotary piston internal combustion engine A rotary piston internal combustion engine, includes a common housing; a stationary hollow hub; two rotary piston systems in the housing, each system including at least one piston rotor having partial cylindrical areas and front areas, the second rotary p... | 10/25/1994 |
| 5251593 | Thermodynamic liquid ring machine A liquid ring machine comprises an outer drum having a cylindrical outer wall 1 surrounding a central axis 2, a vaned rotor 3 rotatable within the drum about an axis 4 which is parallel to, but offset from, the central axis 2 of the drum, and a liquid dis... | 10/12/1993 |
| 5228309 | Portable self-contained power and cooling system An integrated, self-contained portable power and cooling system includes a combustion generator and a scroll-type expander driven by combustion gas discharged from the gas generator, wherein the expander is connected in driving relationship to a scroll ai... | 07/20/1993 |
| 5101782 | Rotary piston engine with slide gate A rotary piston engine comprising two segregated body chambers of compression and expansion, and one separable combustion chamber, carrying out air suction and compression, combustion resultant expansion and exhaust, and fuel injection and constant-volume... | 04/07/1992 |
| 4877385 | Positive displacement rotary mechanism A positive displacement rotary mechanism has four identical rotary helical intermeshing lobes that cooperate with a stationary cylindrical member extending centrally thereof to define repetitive working space internal of the lobes having boundaries along ... | 10/31/1989 |
| 4860705 | Positive displacement rotary mechanism A positive displacement rotary mechanism has three and alternatively four identical rotary helical intermeshing lobes of continuously varying pitch that cooperate with a stationary cylindrical member extending centrally thereof to define a repetitive work... | 08/29/1989 |
| 4854279 | Three chamber continuous combustion engine A three chamber continuous combustion engine is a rotary vane, concentric rotor type of internal combustion engine having a burner assembly, three crescent shaped static chambers serving as compressor, expander and oil pump; and six dynamic chambers defin... | 08/08/1989 |
