Abstract: An internal combustion engine has an annular engine chamber in which a set of pistons oscillate in synchronism. On their compression stroke, the pistons draw in a fresh charge into the chamber behind the piston. On the power stroke, that charge is compressed and released into the next following combustion chamber. The engine geometry is selected to provide a a compression stroke that is shorter in duration than the combustion stroke.

Abstract: A rotary piston internal combustion engine includes a housing defining a cylinder chamber in the form of a circular ring. An even number of pistons circulate in the piston chamber and are of a circular cross-section adapted to the cylinder chamber. Two piston carriers mounted rotatably about the axis of the cylinder chamber each carry half the number of pistons, the peripheral surfaces of the piston carriers being such that they supplement the internal surface of the cylinder chamber to constitute a circular cross-section which corresponds to the pistons and against which piston rings on the pistons seal. At least one sealing ring is accommodated between the piston carriers and between each piston carrier and an oppositely disposed wall of the housing in an annular groove of the housing or a piston carrier respectively. The sealing ring bears against a co-operating surface of the respective piston carrier under a force which acts out of the annular groove.

Abstract: A swivel-blade internal combustion engine which produces gas pressure energy for two-cycle and four-cycle operation is disclosed. The engine includes a reciprocating shaft (24) and a reciprocating element (9) supported on the reciprocating shaft. The reciprocating element (9) has a working surface adapted and positioned to receive the gas pressure energy for producing an oscillating pendulum moment in the reciprocating element. The working surface of the reciprocating element preferably has a trapezoidal shape which is rounded on the head. A rocker arm system (16) is provided for converting the pendulum moment into the torque of a crankshaft. The rocker arm system includes a swing arm (21) fixed solidly on the reciprocating shaft (24) and an articulated connecting rod (20) connected to the swing arm and to the crankshaft through which the pendulum moment is passed to the crankshaft.

Abstract: A tabulated kinematic control theory provides a foundation for a variety of peristaltic motion control versions where a control stator establishes a reference line for a peristaltic control wave or path in few different ways for the purpose of making a control point on a differential linkage or gear to follow this control path which in turn is creating an alternating harmonic-motion-like accelerating and decelerating rotary motion to a pair of concentric rotor shafts which are attached to vane carriers with one or more vanes each.

Abstract: This invention relates to a novel improvement in diesel engines. A two cycle direct injection internal combustion diesel engine comprising four pistons utilizing two common cylinders, dual rocker shaft (internally including shaft within a shaft), plurality of intake ports, plurality of exhaust ports, water jacket and a single dual throw crankshaft. A single combustion in each cylinder or chamber acts on two pistons in opposite direction. The engine breathes by means of intake and exhaust ports utilizing a charged intake. The opposite rocker motion internally is accomplished by a shaft within a shaft. The rocker motion is transferred to rotary motion via a single dual throw crankshaft.

Abstract: Four pistons (20) are arranged offset from one another at angular spacings of 90.degree. in a housing (10) having a cylindrical inner wall, and they are each supported to be pivotable about a piston axis (B) which is parallel to the housing axis (A). The pistons (20) are designed as two-armed levers whose arms are in rolling engagement with a respective adjacent piston arm so that four housing chambers (18) are defined in the housing (10) by a pair each of piston arms in rolling engagement with each other. Either a fuel-air mixture or air into which fuel is injected is processed in the housing chambers (18) according to the Otto or Diesel four stroke cycle, with the pistons (20) rocking back and forth like a balance. These rocking motions are converted into rotation of a central shaft (30) by cam followers (38) which roll off running surfaces (40) formed on the pistons (20).

Abstract: A two-stroke-cycle engine has a pivoted divider oscillating within a fan-shaped combustion volume. The divider is connected to a connecting rod which is connected to an output crankshaft. Seals are used instead of piston rings. Each of the two radial walls has a spark plug and a fuel injection tube located near the outer end. Each planar parallel side wall has an air inlet port near the inner end. An exhaust port is located in the center of the arcuate wall.

Abstract: An internal combustion engine has a rotating annular cylinder containing a plurality of mutually oscillating pairs of pistons, one of each pair being rigidly fixed to a first axially-oscillating tube, the other of each pair being fixed to a second such tube concentric with the first. Each of the tubes is connected, by a "Scotch yoke", to a crank throw on a crank shaft. Each Scotch yoke includes an arm fixed at one end to its associated tube for oscillation therewith. The arm includes an elliptical slot that carries an annular ball bearing race for movement therein, one crank throw being journaled within each race. The cylinder is rotated by the crankshaft through a gear train in a fixed ratio to the rotation rate of the shaft. The pistons, having conical end faces, impart a rotational motion to the crankshaft during the power stroke of the cycle, the rotation of the crankshaft, in turn, imparting an oscillation to the piston pairs to actuate them in accordance with the strokes of the engine cycle.

Abstract: An internal combustion engine (20) which includes an oscillating piston (52) and rotary valves (34) and (36) is shown. Oscillating movement of piston shaft (50) is transmitted to oscillating idler shaft (66). Outer and inner coaxial shafts (82) and (84) are connected by direction reversing gears (88) for counterrotation of the shafts. Outer shaft (82) is connected to oscillating shaft 66 through gear sets (102) and (104), and inner shaft (84) is connected thereto through gear sets (106) and (108). Gear sets (102) and (106) include one-way overrunning clutches (110) and (112), and gear sets (104) and (108) include electromagnetically controlled friction clutches. (See FIG. 1) In FIG. 13, mechanically operated clutches (200A) and (200B) are used in place of the electromagnetically controlled friction clutches shown in FIG. 1, and in FIG. 17, sector gear sets (244) and (246) connect oscillating shaft 66 to respective coaxial shafts (82) and (84).

Abstract: The four stroke concentric oscillating rotary vane internal combustion engine performs the four stroke Otto cycle inside four arcuate combustion chambers formed between the shell, rotor cylinder and two transverse end plates analogous to the engine cylinder; two fixed diametrically opposed vanes inwardly projecting from the shell serving as cylinder heads; and two fixed diametrically opposed vanes projecting outwardly from the rotor cylinder functioning as pistons. An output shaft mechanism orchestrates the synchronized operations of the fuel injection and spark ignition systems, pair of cranking mechanisms controlling the rotary strokes of the rotor, and pair of forced porting mechanisms forcing the complete removal of combustion byproducts from and sufficient supply of air into the combustion chambers.

Abstract: The motor comprises a casing defining a circular cavity in which a rotor is rotatably mounted. The rotor is keyed to a hollow shaft issuing from the casing. A pair of angularly-spaced radial partitions are fixed to the casing, extend across the cavity and are in sealing engagement with the rotor. The partitions define a compressor chamber and a work chamber. A hollow compressor piston and a work piston are fixed to the rotor at angularly-spaced locations and extend within and are in sweeping engagement with the compressor and work chambers, respectively. The compressor piston communicates with atmospheric air through the hollow of the shaft. A pair of valved air inlet ports open in the compressor chamber adjacent to respective partitions for adjusting the amount of air entering the latter chamber. An outlet port opens in the work chamber intermediate the partitions.

Abstract: An internal combustion engine having a set of annular 360 degree cylinders each containing two sets of double-headed pistons. The piston sets reciprocate approximately 45 degrees within said cylinder between two combustion ports located 180 degrees apart. The reciprocal motion of the piston sets is translated to a rotational motion to power a drive shaft by four ratchet and pawl mechanisms connected to circular gear sets. An adjustable combustion cylinder allows the total cubic volume of the engine to be varied according to the power needed at any given time.

Abstract: The preferred embodiment of the present invention is in the form of a rotary compression/combustion assembly (10) adaptable to be utilized as an internal combustion engine, a fluid pump or as fluid compressor device. The assembly (10) operates by the interaction of a variety of subassemblies, and is formed to be generally symmetrical about a central axis (11). A chamber subassembly (12), of cylindrical shape, is divided into five subchambers (54-62) by four vane subassmeblies (14). Each vane member (44) pivots about its own pivot axis to create a variable volume combustion/compression chamber (54-60) between the vane member (44) and the frame side wall (32) of the cylinder frame (24). A rotor subassembly (16), including a drive shaft (86) and a rotor blade (88) interacts with vane members (44) with the position of the rotor blade (88) determining, or being determined by, depending upon mode of use, the volume of each subchamber (54-60).

Abstract: A four stroke internal combustion engine including a combustion chamber, a movable assembly, a stationary assembly and a motion conversion mechanism. The combustion chamber is formed between the stationary assembly and the movable assembly so as to be located radially of the predefinable pivot point. The movable assembly and the stationary assembly are cooperatively associated one with another such that the movable assembly is capable of being made to undergo oscillating motion about the aforementioned predefinable pivot point in a semicircular path about the stationary assembly. Motion is imparted to the movable assembly by virtue of the forces produced during combustion in the combustion chamber acting on a vane which projects outwardly of the movable assembly into the combustion chamber.

Abstract: A swinging-piston ICE comprising a swinging piston (3), connecting rod (2), intake port (16) and exhaust ports (17). Combustion chambers (A,C) are formed on opposite sides of the piston (3) where oil nozzles (13) are provided. The piston is sealed at its end surfaces (3c) and along the cylindrical surface (3d) wherein transfer ports (N) are provided. A slide shoe (15) opposite the transfer ports is provided for blocking the exhaust ports.

Abstract: An apparatus for pressurizing a fluid comprises a housing including a chamber and at least one vane positioned in the chamber and adapted to oscillate therein at any convenient speed to pressurize a fluid. A seal member is secured to the at least one vane for sealing between the at least one vane and the chamber. A propulsion apparatus is provided for oscillating the at least one vane and a counterweight device is operably secured to the propulsion apparatus. The counterweight device moves in opposition to the movement of the at least one vane to minimize the vibration produced in the housing by the oscillation of the at least one vane. A valve mechanism is secured to the housing and is in fluid communication with the chamber in the housing to control the movement of fluid into and out of the chamber.

Abstract: An oscillating piston engine is formed with a wing-shaped piston having two symmetric extensions oscillating within two kidney-like cylinders in the cylinder body so that the power can be directly and continuously transmitted outwards by a power transmission shaft having a pair of semi-circle sector bevel gears alternatively engaged with a bevel gear formed under the piston shaft.

Abstract: The invention disclosed herein is a cyclic power mechanism including means providing for a variable dwell between cycles of the mechanism. The mechanism produces energy during each cycle and stores the energy of each cycle for consumption. The variable dwell between cycles is terminated and a new cycle is initiated upon the consumption of a preestablished portion of the stored energy. A preferred embodiment of the mechanism is a free piston engine operation on an Otto cycle. The piston of the engine is restrained after each combustion cycle as the energy of that combustion is stored for use. When a preestablished portion of the stored energy has been consumed, the piston is released and forced into another compression and combustion cycle for further storage of the combustion energy.

Abstract: The machine comprises at least one central pivot 7 angularly fast with a control member 1 and mounted for oscillation on said control member 1 around a direction perpendicular to the axis of the control member 1 and a first eccentric 31 the axis of the active portion of which 33 passes through the intersection of the axes of the control member 1 and of the central pivot 7.A piston 22 turns on the active part 33 of the eccentric 31 and is pivoted concentrically to the axis of the central pivot 7. This piston comprises at least one active face 24 moving within at least one chamber 8 to modify its volume. It comprises further cinematic means 37, 38, 41 imposing a relative rotation between the eccentric 31 and the control member 1.The walls 10, 11 of the chamber 8 are fast with the central pivot 7.

Abstract: A rotary internal combustion engine capable of operating under compression ignition, comprises a cylinder bore in a stator sealed between parallel end walls, an engine shaft journaled in the end walls, concentric with the cylinder bore, an air-compressing rotor keyed eccentrically to the engine shaft, the rotor generally annular, traveling clockwise, a wiper vane across its head sucking in air through a one-way inlet port in the perimeter of the cylinder bore, at the same time compressing the air ahead of it which was inhaled during the preceding revolution.

Abstract: This disclosure is directed to an internal combustion engine having a plurality of double oscillating pistons disposed around the interior of the housing, each side of each oscillating piston having a cam arm which applies the force of combustion to a cam gear. The cam gear has a cam surface on its exterior which engages the cam arm and a ring gear on its interior which engages a plurality of planetary gears which in turn drive a drive shaft having a sun gear.

Abstract: An internal combustion engine of the type having a chamber generally resembling that of a rotary engine. The piston means is of the type of a pendulum-like oscillating piston whose sides cooperate with two generally opposite combustion chambers. The piston has generally flat faces perpendicular to the axis of oscillation, sealing by engaging respective ends of the engine block chamber in which are suitably disposed ports for introduction of fuel mixture into the combustion chambers. The oscillations of the piston are transformed to the rotation of an output shaft by a slider reciprocating within the piston and mounted on an eccentric fixedly secured to the output shaft. The slider also assists in charging fuel mixture into the combustion chambers.

Abstract: An internal combustion engine utilizes a first outer oscillating piston connected to the engine housing by means of a pivot bearing and a second inner piston connected to the first piston by means of a pivot bearing connection. The inner piston is rotatably connected through an eccentric shaft to a main power shaft. Rotation of the eccentric shaft causes the inner piston to oscillate relative to the outer piston and also causes the outer piston to oscillate relative to the engine housing. Each of the oscillating pistons defines two opposed chambers of complementary and variable volumes; and fluid porting means, responsive to the motions of the pistons, are provided to control the flow of fluid among the chambers to attain a dual expansion of the combustion gases. The result is an internal combustion engine which is efficient, quiet, cool running and less subject to wear than presently used engines.

Abstract: A rotary engine employs one or more flap-type pistons which swing about a fixed pivot. Power is transmitted from the pistons to the output shaft by pins connected to the piston which ride in figure eight grooves in a pair of spaced discs connected to the output shaft. The discs are spring-loaded toward each other to provide side seals along the sides of the pistons. Ports in the discs register with a working chamber in the appropriate sequence for the intake and exhaust strokes. Hence conventional valving is not required.

Abstract: A pivotal piston machine or compressor including a disc-like pivotal piston oscillating on a bearing axis, such oscillatory movement being effected by engagement of a roller-type cam follower of a crank arm driven by a crankshaft, with cam surfaces formed on the pivotal piston, and angled member for limiting the oscillating movement at opposite ends of the pivotal stroke of the piston. The angled member serves as a separating wall between two compression chambers and a delivery chamber. A pair of pivotal pistons may be arranged adjacent each other to utilize a common air intake and provide a compound piston machine.

Abstract: A four stroke, internal combustion, rotary engine which completes a four stroke cycle in one revolution is described. The engine consists of a wedge shaped combustion chamber having a pivotal wall, and intake and exhaust valves, together with a spark plug or injector for diesel operation. Abutting the combustion chamber pivotal wall is a circular chamber having a rotor therein with two opposed vertices. The vertices mount rollers which engage the walls of the circular chamber. The rotor is displaced by the pivotal wall moving downwardly during the combustion phase to open an exhaust port in the circular chamber. Continued rotation of the rotor then displaces the pivotal wall upwardly to exhaust the combustion chamber, so that the chamber may intake, displacing the pivotal wall downwardly. Continued rotation then displaces the pivotal wall upwardly to compress the fuel mixture for combustion, completing the cycle.

Abstract: An internal combustion engine wherein each piston is relatively flat and is journalled to oscillate in a cavity defined by a sector of a cylinder. Thus, the piston forms two work chambers, one on each side of the piston, and each work chamber is equipped with appropriately timed intake and exhaust valves and one or more spark plugs.

Abstract: An oscillating engine having synchronized oppositely-rotating vaned rotors in adjacent arcuate chambers. Intake and exhaust openings for each chamber are located adjacent to each other near at least one of the extreme positions of oscillation of each respective rotor. A rotary valve member positioned adjacent both to the intake opening and the exhaust opening of each chamber is actuated intermittently by a chain and sprocket drive in timed relation with the rotor oscillation between positions where the valve alternately closes each intake and exhaust opening to positions where the valve alternately partially opens each intake and exhaust opening.

Abstract: An oscillating piston engine capable of running on a working fluid such as steam or compressed air comprises a bank of cylinders mounted for rotation in unison to turn a shaft in an engine block, pistons mounted for oscillation in the cylinders and rotatable in unison relative to the cylinders to turn another shaft in the engine block, control means operable in response to rotation of the cylinders for supplying and exhausting working fluid to and from opposite ends of the cylinders in alternating timed relation to cause the pistons to oscillate in the cylinders and pistons, and gearing means connecting the piston shaft and the cylinder shaft to an output shaft for converting the oscillating motion of the pistons and cylinders into unidirectional rotation of the output shaft.

Abstract: A vane-type internal combustion engine in which, during a power stroke, a spring is compressed which delivers back power to the engine during a non-powered stroke and provides relatively even torque.

Abstract: In a four stroke cycle reciprocating internal combustion engine, four dual functionable combustion chambers and two power trains to crankshaft are comprised of a single stationary cylinder encasing two quadruple faced rotor-reciprocative pistons, further encasing a rotatable intake-exhaust manifold geared to an external rotatable crankshaft. The crankshaft is connected by connecting rods to driving arms on external extensions of the two pistons.Two such units connect to a common crankshaft to comprise an eight combustion chamber engine.Upon each crankshaft half turn stroke the two pistons of a unit and associated intra-engine power trains to the crankshaft move simultaneously in opposed directions to expand two chambers for intake and combustion and to contract the other two for compression and exhaust functions.

Abstract: A rotary internal combustion engine comprising a cylindrical housing with end walls, a rotating cylinder block therein having seals mounted on the outer arcuate surface of the rotating cylindrical block as well as the end surfaces thereof to provide a tight seal with the inner walls of the housing. A plurality of radially extending cylinders are provided in the rotating block, each including a piston. Connecting rods are eccentrically mounted on a single throw or single connecting pin of a crank shaft. The cylinders are offset about one-half inch axially of the crank shaft so that they reciprocate in substantially the same plane. Different sun gear arrangements are provided to enable rotation of the rotating block either in the same direction or in an opposite direction relative to the crank shaft to obtain different ratios and different numbers of power strokes per revolution of the cylindrical bloc. Either two pistons 180.degree. apart or three pistons 120.degree. apart are provided.

Abstract: This invention relates to a combustion engine which is cooled internally. Combustion occurs in primary combustion chambers and the gas combustion products are released into secondary chambers after combustion to mix with cooler fluids. These fluids cool the engine body during engine operation. A preferred form of the invention consists of a semi-rotary engine and means for joining the rotor of this engine to the output power shaft. Preferred engines of this invention will not require external cooling or use poppet valves and will be able to operate as both a four-stroke and two-stroke engine.

Abstract: An expansible chamber device in which a cylinder of preferably rectangular configuration supports a pair of opposing flaps pivotally attached to the corners of the cylinder. The flaps sealably and slidably engage the top surface of a piston disposed within the cylinder such that the surface area of the flaps together with the exposed surface area of the top surface of the piston between the flaps constitutes the effective working area of the device. This area is considerably greater than the area of the piston surface itself whereby overall efficiency of the chamber is increased.

Abstract: An oscillating piston internal combustion engine comprises a bank of combustion chambers mounted on the front of an engine block for rotation in an annular path to rotate an output shaft protruding from the rear of the block. Gearing inside the block converts oscillating motion of the pistons and cylinders into unidirectional rotation of the output shaft.

Abstract: An internal combustion engine wherein a piston element with rectilinear sides operates within a movable cylinder-piston element having rectilinear sidewalls, and wherein the combustion chamber has a polyhedral shape. Rotatable crankshafts are mounted in each of the piston and cylinder-piston elements so that said elements follow gyratory paths in opposite directions to effect a variable volume combustion chamber. A cylindrical valve member is rotated in timed sequence to the rotation of the crankshafts so that intake and exhaust ports are sequentially opened and closed during the combustion cycles. One or both of the crankshafts may operate or be joined to a drive shaft or shafts for work output, said crankshafts being interconnected by gear means to coordinate gyratory movement of the piston and cylinder-piston elements.

Abstract: An internal combustion engine comprising a translation case or gear case, a combustion chamber and a rotary valve. The rotary valve is adjacent to and on one side of the combustion chamber. The combustion chamber contains a rectangular piston plate. The piston plate is hinged at one end to a shaft and adapted for oscillatory movement in the combustion chamber. The walls of the combustion chamber are formed by the inner wall of a first circular disc, the inner wall of a second circular disc, the inner wall surfaces of the engine block and the surface of the piston plate. The rectangular piston plate is integral with or fixedly connected to the shaft, which shaft is fixedly connected to a first linking means. The piston plate, shaft and first linking means are movably connected to a second linking means, a throw and a drive gear.

Abstract: A two-stroke internal combustion engine which comprises two rocking pistons disposed on opposite sides of a separating element that separates two pump chambers from each other. The pump chambers are located on the back side of the rocking pistons, and a hollow rotary slide is mounted in the separating element to positively control the intake and precompression phases of the pump chambers.