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| Number | Title | Issue Date |
| 7614369 | Reciprocating cylinder engine An engine is disclosed having cylinders slidably disposed in an engine block. The cylinders reciprocate, engaging movable pistons at each end. A piston and cylinder end define a combustion chamber. A centrally located crankshaft extracts work, and converts the recip... | 11/10/2009 |
| 7434550 | Internal combustion engine An improved configuration for an opposing piston-opposing cylinder (“OPOC”) internal combustion engine with a single camshaft to reduce friction between the pistons and the cylinder walls during the combustion phase of the engine cycle. The improvements are pres... | 10/14/2008 |
| 7334558 | Slide body internal combustion engine An internal combustion engine includes a slide body having a plurality of rigidly mounted pistons on opposite ends of the slide body. The slide body reciprocates and is connected to a flywheel by shaft and bearing which extends through an angled track in the slide b... | 02/26/2008 |
| 7328682 | Efficiencies for piston engines or machines Disclosed are crankshaft, single-plate cam and beam mechanisms that provide significant improvements in performance for 2 & 4-stroke engines, compressors and pumps. These cost effective mechanisms include linkages with the new and improved use of pivoting arms that ... | 02/12/2008 |
| 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 |
| 7267093 | Crankcase with bottom plate In a crankcase for an internal combustion engine, including a lubricant chamber for the collection of lubricant, and a bottom plate for providing dry sump lubrication closing the crankcase and being sealingly joined to the bottom end of the crankcase, wherein the cr... | 09/11/2007 |
| 7219631 | High torque, low velocity, internal combustion engine An Internal Combustion Engine including a plurality of reciprocating pistons disposed about the periphery of a central housing, and a pair of drive cams responsive to the displacement of the pistons for driving one or more output drive shafts. A piston rod cross mem... | 05/22/2007 |
| 7201133 | Internal combustion engine having dual piston cylinders and linear drive arrangement A device for transforming an alternating motion of a piston into a circular motion of a shaft is provided. The device includes an assembly of two pistons connected by two racks alternatively in mesh with a toothed cam set on a shaft. Movement in one direction of the... | 04/10/2007 |
| 7194989 | Energy efficient clean burning two-stroke internal combustion engine A precision cast engine has a piston unit and a rotor unit to translate linear thrust from the piston unit into rotary power. Each piston rod is attached to a thrust absorber carriage running on precision bearings to eliminate piston drag on the cylinder walls. One ... | 03/27/2007 |
| 7150255 | Engine including electrical interference shield A shield cover for an engine is provided to shield electric parts, in an engine wherein an engine body includes a crankcase having a plurality of cylinder bores. An intake chamber common to all of the cylinder bores is spaced away from the crankcase. The shield cove... | 12/19/2006 |
| 7104227 | Internal combustion engine machine incorporating significant improvements in power, efficiency and emissions control A two stroke cycle internal combustion engine machine that does not require lubricating oil to be mixed with its fuel, producing greater efficiency, higher power to weight ratio, cooler operating temperatures, a wider speed range, greater simplicity, and lower toxic... | 09/12/2006 |
| 7025022 | Exhaust valve and intake system A method for controlling a fluid quantity in an internal combustion engine is provided for an internal combustion engine having an engine shaft and an operation cycle that includes at least one intake phase, one proportioning phase, one combustion phase in a combust... | 04/11/2006 |
| 7005756 | Marine power generation and engine cooling An on-board marine electrical power generator (14) containing a conventional four-stroke, water-cooled outboard motor engine (50) coupled to an alternator (52) upon a transportable frame (44) suitable for mounting on-board a boat. In one ... | 02/28/2006 |
| 6766781 | Crankcase for an internal combustion engine, especially for a boxer engine The invention relates to a crankcase for an internal-combustion engine, particularly for a horizontally opposed engine, having two crankcase halves (10, 12) in which bearing sections (18) with bearing bores (24) for the crank pins of a crankshaf... | 07/27/2004 |
| 6332435 | Crank journal support portion structure of a horizontal opposed type engine The invention minimizes the problem of deterioration in engine strength by concentration of stress due to the combustion load in a hole portion provided on a crank journal support wall in a crank case and reduces pumping loss. Further, the invention disch... | 12/25/2001 |
| 6209495 | Compound two stroke engine A two stroke compound engine has a pair of horizontally opposed piston cylinder assemblies extending along a common axis therein. Each piston cylinder assembly includes a piston, a combustion chamber and respective inlet and exhaust valves. A pair of conn... | 04/03/2001 |
| 5988121 | Piston engine having a hypocycloidal piston stroke transmission with a Watt's guide, particularly with pistons in opposed cylinders For a piston engine having a hypocycloidal piston stroke transmission with a Watt's guide, particularly having pistons in opposed cylinders, in which case the transmission is rotatably arranged on the crank pin of a crankshaft and comprises a stroke and a... | 11/23/1999 |
| 5934229 | Double circular slider crank reciprocating piston internal combustion engine The invention relates to a internal-combustion engine, particularly to a reciprocating piston type internal combustion engine having a crank circular slide block which replaces the connecting rod. It comprises the cylinder body; the cylinder, the piston, ... | 08/10/1999 |
| 5884590 | Two-stroke engine An oscillating lever arm engine includes rigidly connected opposing pistons moved by a single lever connected to a rotating crankshaft. When applied to a two-cycle internal combustion engine, one piston may function as a pump piston and the second piston ... | 03/23/1999 |
| 5862781 | Two-stroke internal combustion engine In a two-stroke internal combustion engine with a crank slide mechanism and a plurality of working cylinders which, have bases and are divided by a piston into a lower and an upper cylinder chamber, the lower cylinder chamber being used substantially for ... | 01/26/1999 |
| 5826550 | Internal combustion engine In an internal combustion engine comprising an engine block housing at least two reciprocating pistons being each provided in a cylinder comprising at least an inlet valve and an exhaust valve, which pistons are coupled with a crankshaft being coupled wit... | 10/27/1998 |
| 5799628 | Internal combustion engine with rail spark plugs and rail fuel injectors A two stroke cycle reciprocating piston internal combustion engine having horizontally opposed cylinders and pistons, scotch yokes and self adjusting sliding blocks for the interface between the scotch yokes and crankpins, and secondary cylindrical piston... | 09/01/1998 |
| 5572904 | Oscillation lever arm engine An engine for generating rotational torque through the oscillating movement of lever arms. The inventive device includes an elongated cylinder having first and second opposed cylinder heads. A pair of pistons are oppositely disposed within the cylinder an... | 11/12/1996 |
| 5560327 | Internal combustion engine with improved cycle dynamics A reciprocating piston internal combustion engine has a conjugate drive motion translator. The engine is horizontally opposed with each shuttle having a pair of pistons attached at the ends of a pair of oppositely extending arms. A centrally located apert... | 10/01/1996 |
| 5528946 | Apparatus for conversion of reciprocating motion to rotary motion and vise versa A motion conversion system by which near 100% of a reciprocating motion, and a rotary motion, fluently converted from one to the other includes, a drive shaft (20), an intermediate circular element (22), externally teethed to near one-half of its circumfe... | 06/25/1996 |
| 5517953 | Stepped piston axial engine A highly pressurized internal combustion engine, wherein arrangements to balance the intake flow of air that passes from the turbochargers to a windchest, through spring valves to compressor cylinders, that force the charge into a pressure chamber to supp... | 05/21/1996 |
| 5503038 | Free floating multiple eccentric device An apparatus for directly converting rotary motion to alternating linear motion comprising a cylindrical shaft and a first eccentric mounted on said shaft, a multiple eccentric comprised of a second eccentric, a third eccentric, and a first cylindrical bo... | 04/02/1996 |
| 5494135 | Lubrication system for a conjugate drive mechanism A conjugate drive mechanism of a motion converter includes a conjugate driver, which is rotatably mounted on a crankpin, and a bearing conjugate, which is mounted on a linearly movable shuttle. The conjugate drive mechanism is lubricated by supplying lubr... | 02/27/1996 |
| 5456159 | Motion converter with pinion sector/rack interface A device for translating rotary to linear motion and vice versa includes a reciprocating linearly moving shuttle with a central aperture. The aperture has a pair of opposing conjugate bearings protruding towards the center and which capture therebetween a... | 10/10/1995 |
| 5441018 | Internal combustion rotary piston engine A two stroke engine (2) comprises a housing (4), a cylinder (6), a shaft (10) rotatably supported in the housing (4) for rotation about the cylinder axis (14), a piston (8) slidably mounted on the shaft (10) while fixed for rotation with the shaft (10) an... | 08/15/1995 |
| 5331925 | Internal combustion engine An internal combustion engine has a plurality of cylinders and two pistons located in each of the cylinders and forming two combustion chambers with the latter.... | 07/26/1994 |
| 5331926 | Dwelling scotch yoke engine An improved engine utilizing a dwelling scotch yoke and a journalled flywheel in a unique combination for stalling the translatory movement of oppositely paired pistons during the detonation of the fuel mixture to achieve a clean exhaust and a energy effi... | 07/26/1994 |
| 5259256 | Motion converter with pinion sector/rack interface A device for translating rotary to linear motion and vice versa includes a reciprocating linearly moving shuttle with a central aperture. The aperture has a pair of opposing gear racks protruding towards the center and which capture therebetween a pair of... | 11/09/1993 |
| 5228416 | Internal combustion engine having opposed pistons An internal combustion engine utilizing a disk-shaped crankshaft operatively connected with respect to at least one pair of opposed pistons. Each piston of each pair is fixedly secured with respect to a shaft extending therebetween. With two pairs of pist... | 07/20/1993 |
| 5211065 | Apparatus for translating rotational motion to harmonic linear motion An improved connecting rod assembly for a reciprocating internal combustion engine provides essentially simple harmonic linear motion of a piston, thereby eliminating forces and moments caused by non-simple harmonic linear motion of a piston. The connecti... | 05/18/1993 |
| 5123334 | Pump or motor with secondary piston connected to guide member of a main piston Pump or motor comprising at least one cylinder housing being closed at both ends and a piston body received in said housing so that at both ends of said housing a working compartment is formed, the piston body being provided with a cavity shaped such that... | 06/23/1992 |
| 5046459 | Oscillatory motion apparatus Oscillatory motion apparatus has a first reciprocating rod oriented generally perpendicularly with respect to a second reciprocating rod. A first trammel gear is pivotally secured to the first and second rods. Reciprocation of the rods produces responsive... | 09/10/1991 |
| 4977864 | Diesel engine An engine is disclosed that is applicable for automotive and truck use but is also adaptive for other power producing uses. Two reciprocating cylinders are housed within an outer cylinder. A piston is housed within each of the two reciprocating cylinders.... | 12/18/1990 |
| 4972809 | Power unit of inboard/outboard An improved propulsion unit for a watercraft embodying a reciprocating internal combustion engine having horizontally disposed cylinders so as to provide a compact assembly. The engine operates on the two-stroke principle and the exhaust manifold for the ... | 11/27/1990 |
| 4932373 | Motion converting mechanism To reduce space requirements, vibrations and certain stresses in a motion converting mechanism, a rod is constrained to reciprocate within a housing where the rod is attached to the crankshaft by a cylindrical shaped connector that orbits around the crank... | 06/12/1990 |
