Class / Patent application number | Description | Number of patent applications / Date published |
123018000 | OSCILLATING PISTON | 22 |
20080314350 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 12-25-2008 |
20090151683 | Fluid System for Oscillating-Piston Engines - The fluid system is intended for an oscillating-piston engine ( | 06-18-2009 |
20090188460 | Sealing System For An Oscillating-Piston Engine - The sealing system for oscillating-piston engines, comprising at least two oscillating pistons ( | 07-30-2009 |
20100000488 | Conversion Mechanism - The invention relates to a conversion mechanism for an internal combustion ( | 01-07-2010 |
20100206258 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, a radial impulse engine includes first and second movable V-members operably disposed between first and second end wall portions. The first V-member can have a first wall portion with a first distal edge portion and a second wall portion with a first cylindrical surface. The second V-member can have a third wall portion with a second distal edge portion and a fourth wall portion with a second cylindrical surface. In this embodiment, the first distal edge portion of the first wall portion can be configured to slide across the second cylindrical surface of the fourth wall portion, and the second distal edge portion of the third wall portion can be configured to slide across the first cylindrical surface of the second wall portion, when the first V-member pivots about a first pivot axis and the second V-member pivots about a second pivot axis. | 08-19-2010 |
20100242891 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems and assemblies are disclosed herein. In one embodiment, an assembly includes a first end wall portion spaced apart from a second end wall portion to at least partially define a pressure chamber therebetween. In this embodiment, the assembly also includes a plurality of movable wall portions disposed between the first and second end wall portions. Each movable wall portion includes a cylindrical surface extending at least partially between a distal end portion and a pivot axis. In this embodiment, the assembly further includes a power take out member operably coupled to the distal end portion of each of the corresponding movable wall portions. | 09-30-2010 |
20100263616 | Internal combustion two stroke oscillating engine - The invention relates to heat engines and more specifically to positive displacement internal combustion engines, and is particularly concerned with oscillating engines i.e. engines, in which piston executes oscillating motion. The invention provides the optimal, “canonical” form for the two stroke oscillating engine of unique strength and compactness. | 10-21-2010 |
20100282201 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In this embodiment, the engine further includes a plurality of movable wall portions disposed between the first and second end wall portions. Each movable wall portion includes a cylindrical surface extending at least partially between a distal edge portion and a pivot axis. Upon ignition in the combustion chamber, the distal edge portion of each movable wall portion slides across the cylindrical surface of the adjacent movable wall portion as the movable wall portions pivot outwardly in unison about their respective pivot axes. | 11-11-2010 |
20130025556 | Combustion Chamber Promoting Tumble Flow - A combustion chamber in an opposed-piston, internal-combustion engine is disclosed in which the pistons tops are designed so that when they approach each other, they induce a tumble flow in one or two hemispherical spaces defined in the piston tops. The combustion chamber further includes injectors side mounted in the cylinder wall. In one embodiment, the tumble flows in the two hemispheres are in the same direction and in another embodiment, in opposite directions. In yet another embodiment, there is only one injector and one hemisphere in which a tumble flow is induced. | 01-31-2013 |
20150059681 | POLYGON OSCILLATING PISTON ENGINE - A Polygon Oscillating Piston Engine having multiple pistons on one of two oscillating disks. Each piston moves in a straight line along one of the sides of a polygon within a cylindrical chamber, while the oscillating disks move in an arc about a central shaft. The difference in the straight motion of the piston and angular motion of the oscillating disk is accommodated by a slip sleeve within the piston that slides on a peg or bar mounted to each disk. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. This engines compact design results in a high power-to-weight ratio. | 03-05-2015 |
20150068480 | OSCILLATING PISTON ENGINE HAVING A POLYGONAL PISTON - An engine housing has the shape of a regular dodecagonal, and includes a piston of the same shape that moves with a circular pivot movement about the axis of a main shaft. The piston is guided in parallel by three crankshafts synchronously rotating about this centre of rotation. Through this pivot movement, the piston in six combustion chambers each consecutively brings about the four cycles of a spark ignition or diesel engine. The three crankshafts are in permanent engagement through gears which are attached in a fixed manner with a sun wheel, which is seated on a main shaft in a fixed manner, driving it. | 03-12-2015 |
20150300242 | INTERNAL COMBUSTION ENGINE WITH ASYMMETRIC PORT TIMING - An internal combustion engine enabling asymmetric port timing has an engine mechanism including a crankshaft having a crankpin to which each piston of an opposed pair of pistons is connected and by which the pistons are reciprocatable in a respective one of axially inline cylinders. The mechanism also includes a crosshead having opposite ends on each of which a respective piston is mounted, and a coupling between the crosshead and the crankpin by which the pistons are caused to oscillate circumferentially as the pistons are driven to reciprocate. | 10-22-2015 |
20090031979 | Oscillating Piston Machine - An oscillating piston engine comprises a housing in which at least one piston is arranged which can revolve in the housing about an axis of rotation which is fixed in relation to the housing, and which performs when revolving about the axis of rotation reciprocating pivoting movements about pivot axis extending perpendicularly to the axis of rotation between a first end position and a second end position, the at least one piston having a running element which runs, as the piston revolves about the axis of rotation, along at least one control cam which is configured in such a way that the pivoting movements of the at least one piston are derived from the revolving movement of the running element along the control cam. A second running element mounted to the piston and/or a negative-pressure source applying a negative pressure to the backside of the piston are provided for assisting the return of the piston from the first end position to the second end position of the pivoting movement of the piston. | 02-05-2009 |
20090308342 | ROTARY ENGINE WITH CYLINDERS OF DIFFERENT DESIGN AND VOLUME - A rotary internal combustion engine including a housing structure defining a toroidal volume and including first and second housing sections, a rotor structure mounted for rotation in the housing structure and including first and second rotor members respectively that coact with first and second housing sections to define first and second toroidal cylinders. The intake and compression strokes are performed in the first toroidal cylinder and the resultant compressed charge being thereafter transferred by a transfer mechanism through a transfer passage to the second toroidal cylinder where combustion occurs and expansion and exhaust strokes are performed. In the device at least one of the following is true: the transfer mechanism is operative to maintain the volume of the charge substantially constant during the transfer operation; the first and second cylinders have disparate configurations; the second toroidal cylinder has a larger volume that the first toroidal cylinder with the transfer mechanism maintaining the volume of the charge substantially constant during the transfer operation irrespective of the larger volume of the second toroidal cylinder as compared to the first toroidal cylinder. | 12-17-2009 |
20100018490 | Rotary internal combustion engine with annular chamber - The rotary nasal annular engine with internal combustion operates on the principle of a pair of the first rotor ( | 01-28-2010 |
20100251986 | Heterocentric distributive oscillating transmission mechanism and toroidal hermetic rotary engine as its application - Heterocentric Distributive Oscillating Transmission mechanism, as a combination of interlaced planetary systems which interconnect a drive shaft ( | 10-07-2010 |
20110132309 | OSCILLATORY ROTARY ENGINE - An oscillatory rotary engine comprising a toroidal housing having an intake port and an exhaust port. The housing supports an output shaft and a plurality of stacked rotors are disposed within the housing and coupled to the output shaft. Each rotor includes a plurality of pistons disposed in spaced relation to each other about a circumference of the rotor. A resilient coupler connects the rotors to the output shaft. Preferably, the coupler comprises a plurality of nested spiral cuts extending through the rotor. Each piston may include a pawl that is operative to engage ratchets located around the housing, thereby allowing rotation of each rotor in only one direction. The oscillatory rotary engine may further include a compression bypass port that is operative to relieve intake air pressure during compression, whereby the engine has a compression ratio that is less than its expansion ratio. | 06-09-2011 |
20110185998 | TOROIDAL ENGINE - A toroidal engine that can be powered by a fuel/air mixture or by a compressed gas source. The toroidal engine uses one-way bearings to transfer torque generated in a toroidal chamber directly to a drive shaft. Pairs of pistons are mounted on two crank assemblies, which are concentric with the drive shaft. One-way bearings allow the crank assemblies to turn, one at a time, in one direction only. The crank assemblies are directly coupled to the drive shaft, which eliminates the need for complex gear and linkage arrangements. A system can be used with the toroidal engine to alternately stop the crank assemblies at a pre-determined position and to time the ignition of the engine. | 08-04-2011 |
20110297117 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 12-08-2011 |
20130014718 | Toroidal Combustion Chamber With Side Injection - A toroidal combustion chamber shape with a side injector is disclosed for an opposed-piston engine. Fuel is injected into the toroidal volume from a fuel injector in the cylinder wall. In one embodiment, fuel is injected from each injector a plurality of times with the timing between the injections such that fuel clouds from each injection remain substantially isolated from each other. | 01-17-2013 |
20140290616 | ONE-STROKE INTERNAL COMBUSTION ENGINE - One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality, 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings. A 1-stroke engine may require only one crankshaft and thus may reduce the number of parts and increase the specific power ratio. | 10-02-2014 |
20150101557 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 04-16-2015 |
123018000 | Toroidal cylinder | 10 |
20080314350 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 12-25-2008 |
20090151683 | Fluid System for Oscillating-Piston Engines - The fluid system is intended for an oscillating-piston engine ( | 06-18-2009 |
20090188460 | Sealing System For An Oscillating-Piston Engine - The sealing system for oscillating-piston engines, comprising at least two oscillating pistons ( | 07-30-2009 |
20100000488 | Conversion Mechanism - The invention relates to a conversion mechanism for an internal combustion ( | 01-07-2010 |
20100206258 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, a radial impulse engine includes first and second movable V-members operably disposed between first and second end wall portions. The first V-member can have a first wall portion with a first distal edge portion and a second wall portion with a first cylindrical surface. The second V-member can have a third wall portion with a second distal edge portion and a fourth wall portion with a second cylindrical surface. In this embodiment, the first distal edge portion of the first wall portion can be configured to slide across the second cylindrical surface of the fourth wall portion, and the second distal edge portion of the third wall portion can be configured to slide across the first cylindrical surface of the second wall portion, when the first V-member pivots about a first pivot axis and the second V-member pivots about a second pivot axis. | 08-19-2010 |
20100242891 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems and assemblies are disclosed herein. In one embodiment, an assembly includes a first end wall portion spaced apart from a second end wall portion to at least partially define a pressure chamber therebetween. In this embodiment, the assembly also includes a plurality of movable wall portions disposed between the first and second end wall portions. Each movable wall portion includes a cylindrical surface extending at least partially between a distal end portion and a pivot axis. In this embodiment, the assembly further includes a power take out member operably coupled to the distal end portion of each of the corresponding movable wall portions. | 09-30-2010 |
20100263616 | Internal combustion two stroke oscillating engine - The invention relates to heat engines and more specifically to positive displacement internal combustion engines, and is particularly concerned with oscillating engines i.e. engines, in which piston executes oscillating motion. The invention provides the optimal, “canonical” form for the two stroke oscillating engine of unique strength and compactness. | 10-21-2010 |
20100282201 | RADIAL IMPULSE ENGINE, PUMP, AND COMPRESSOR SYSTEMS, AND ASSOCIATED METHODS OF OPERATION - Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In this embodiment, the engine further includes a plurality of movable wall portions disposed between the first and second end wall portions. Each movable wall portion includes a cylindrical surface extending at least partially between a distal edge portion and a pivot axis. Upon ignition in the combustion chamber, the distal edge portion of each movable wall portion slides across the cylindrical surface of the adjacent movable wall portion as the movable wall portions pivot outwardly in unison about their respective pivot axes. | 11-11-2010 |
20130025556 | Combustion Chamber Promoting Tumble Flow - A combustion chamber in an opposed-piston, internal-combustion engine is disclosed in which the pistons tops are designed so that when they approach each other, they induce a tumble flow in one or two hemispherical spaces defined in the piston tops. The combustion chamber further includes injectors side mounted in the cylinder wall. In one embodiment, the tumble flows in the two hemispheres are in the same direction and in another embodiment, in opposite directions. In yet another embodiment, there is only one injector and one hemisphere in which a tumble flow is induced. | 01-31-2013 |
20150059681 | POLYGON OSCILLATING PISTON ENGINE - A Polygon Oscillating Piston Engine having multiple pistons on one of two oscillating disks. Each piston moves in a straight line along one of the sides of a polygon within a cylindrical chamber, while the oscillating disks move in an arc about a central shaft. The difference in the straight motion of the piston and angular motion of the oscillating disk is accommodated by a slip sleeve within the piston that slides on a peg or bar mounted to each disk. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. This engines compact design results in a high power-to-weight ratio. | 03-05-2015 |
20150068480 | OSCILLATING PISTON ENGINE HAVING A POLYGONAL PISTON - An engine housing has the shape of a regular dodecagonal, and includes a piston of the same shape that moves with a circular pivot movement about the axis of a main shaft. The piston is guided in parallel by three crankshafts synchronously rotating about this centre of rotation. Through this pivot movement, the piston in six combustion chambers each consecutively brings about the four cycles of a spark ignition or diesel engine. The three crankshafts are in permanent engagement through gears which are attached in a fixed manner with a sun wheel, which is seated on a main shaft in a fixed manner, driving it. | 03-12-2015 |
20150300242 | INTERNAL COMBUSTION ENGINE WITH ASYMMETRIC PORT TIMING - An internal combustion engine enabling asymmetric port timing has an engine mechanism including a crankshaft having a crankpin to which each piston of an opposed pair of pistons is connected and by which the pistons are reciprocatable in a respective one of axially inline cylinders. The mechanism also includes a crosshead having opposite ends on each of which a respective piston is mounted, and a coupling between the crosshead and the crankpin by which the pistons are caused to oscillate circumferentially as the pistons are driven to reciprocate. | 10-22-2015 |
20090031979 | Oscillating Piston Machine - An oscillating piston engine comprises a housing in which at least one piston is arranged which can revolve in the housing about an axis of rotation which is fixed in relation to the housing, and which performs when revolving about the axis of rotation reciprocating pivoting movements about pivot axis extending perpendicularly to the axis of rotation between a first end position and a second end position, the at least one piston having a running element which runs, as the piston revolves about the axis of rotation, along at least one control cam which is configured in such a way that the pivoting movements of the at least one piston are derived from the revolving movement of the running element along the control cam. A second running element mounted to the piston and/or a negative-pressure source applying a negative pressure to the backside of the piston are provided for assisting the return of the piston from the first end position to the second end position of the pivoting movement of the piston. | 02-05-2009 |
20090308342 | ROTARY ENGINE WITH CYLINDERS OF DIFFERENT DESIGN AND VOLUME - A rotary internal combustion engine including a housing structure defining a toroidal volume and including first and second housing sections, a rotor structure mounted for rotation in the housing structure and including first and second rotor members respectively that coact with first and second housing sections to define first and second toroidal cylinders. The intake and compression strokes are performed in the first toroidal cylinder and the resultant compressed charge being thereafter transferred by a transfer mechanism through a transfer passage to the second toroidal cylinder where combustion occurs and expansion and exhaust strokes are performed. In the device at least one of the following is true: the transfer mechanism is operative to maintain the volume of the charge substantially constant during the transfer operation; the first and second cylinders have disparate configurations; the second toroidal cylinder has a larger volume that the first toroidal cylinder with the transfer mechanism maintaining the volume of the charge substantially constant during the transfer operation irrespective of the larger volume of the second toroidal cylinder as compared to the first toroidal cylinder. | 12-17-2009 |
20100018490 | Rotary internal combustion engine with annular chamber - The rotary nasal annular engine with internal combustion operates on the principle of a pair of the first rotor ( | 01-28-2010 |
20100251986 | Heterocentric distributive oscillating transmission mechanism and toroidal hermetic rotary engine as its application - Heterocentric Distributive Oscillating Transmission mechanism, as a combination of interlaced planetary systems which interconnect a drive shaft ( | 10-07-2010 |
20110132309 | OSCILLATORY ROTARY ENGINE - An oscillatory rotary engine comprising a toroidal housing having an intake port and an exhaust port. The housing supports an output shaft and a plurality of stacked rotors are disposed within the housing and coupled to the output shaft. Each rotor includes a plurality of pistons disposed in spaced relation to each other about a circumference of the rotor. A resilient coupler connects the rotors to the output shaft. Preferably, the coupler comprises a plurality of nested spiral cuts extending through the rotor. Each piston may include a pawl that is operative to engage ratchets located around the housing, thereby allowing rotation of each rotor in only one direction. The oscillatory rotary engine may further include a compression bypass port that is operative to relieve intake air pressure during compression, whereby the engine has a compression ratio that is less than its expansion ratio. | 06-09-2011 |
20110185998 | TOROIDAL ENGINE - A toroidal engine that can be powered by a fuel/air mixture or by a compressed gas source. The toroidal engine uses one-way bearings to transfer torque generated in a toroidal chamber directly to a drive shaft. Pairs of pistons are mounted on two crank assemblies, which are concentric with the drive shaft. One-way bearings allow the crank assemblies to turn, one at a time, in one direction only. The crank assemblies are directly coupled to the drive shaft, which eliminates the need for complex gear and linkage arrangements. A system can be used with the toroidal engine to alternately stop the crank assemblies at a pre-determined position and to time the ignition of the engine. | 08-04-2011 |
20110297117 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 12-08-2011 |
20130014718 | Toroidal Combustion Chamber With Side Injection - A toroidal combustion chamber shape with a side injector is disclosed for an opposed-piston engine. Fuel is injected into the toroidal volume from a fuel injector in the cylinder wall. In one embodiment, fuel is injected from each injector a plurality of times with the timing between the injections such that fuel clouds from each injection remain substantially isolated from each other. | 01-17-2013 |
20140290616 | ONE-STROKE INTERNAL COMBUSTION ENGINE - One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality, 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings. A 1-stroke engine may require only one crankshaft and thus may reduce the number of parts and increase the specific power ratio. | 10-02-2014 |
20150101557 | ROTARY PISTON INTERNAL COMBUSTION ENGINE - An internal combustion engine, and more particularly a rotary internal combustion engine, is provided with said engine having multiple combustion chambers delimited by piston heads and an engine housing wall that defines at least a section of a torus. Additionally, a method for operating the internal combustion engine is described. | 04-16-2015 |