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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7581518 | Coaxial oil pump for barrel engines A barrel internal combustion engine includes a plurality of pistons, a drive shaft, a cam plate and an oil pump. The plurality of pistons is slidably coupled to a plurality of cylinders for reciprocal movement along axes generally parallel with a central axis. The d... | 09/01/2009 |
| 7455038 | Rotary mechanical field assembly An engine is provided comprising a cylinder, a piston, a connecting rod, and a crank. A cylinder combustion occurs in the cylinder to induce movement of the piston in a lateral direction. The cylinder combustion comprises a first stage during which a first portion o... | 11/25/2008 |
| 7373905 | Diesel aircraft engine The present invention is an engine, including two banks of cylinders in a flat, opposed cylinder arrangement and a crankshaft having a plurality of paired throws, the two throws of each respective pair of throws being disposed adjacent to each other and coplanar wit... | 05/20/2008 |
| 7363904 | Lubrication device of engine An engine lubrication system in which a transmission 13 having a main shaft 14 and a drive shaft 15 each having a plurality of change-speed gears mounted thereon is arranged within a separate-type crankcase which is separated into left and right... | 04/29/2008 |
| 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 |
| 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 |
| 7191742 | Diesel aircraft engine The present invention is an engine, including two banks of cylinders in a flat, opposed cylinder arrangement and a crankshaft having a plurality of paired throws, the two throws of each respective pair of throws being disposed adjacent to each other and coplanar wit... | 03/20/2007 |
| 7124730 | Oil catching system for an internal-combustion engine, particularly for an opposed-cylinder engine An oil catching system for an internal-combustion engine, particularly for an opposed cylinder engine, has an oil catching housing arranged below a crankcase. An oil suction space is provided in the oil catching housing from which the lubricating oil is transported ... | 10/24/2006 |
| 7100546 | Crankshaftless internal combustion engine The engine of the present invention provides the direct transfer of energy from the burning down of fuel in the engine cylinders into shaft power by forcing working liquid through guide devices and against an impulse turbine, thereby eliminating the need for supplem... | 09/05/2006 |
| 7086371 | Engine To reduce the number of parts, improve the mountability and maintainability, and allow for a reduction in the size and weight an engine is provided having a crankshaft, a crankcase having a plurality of bearing portions for rotatably supporting the crankshaft with e... | 08/08/2006 |
| 7069898 | Liquid-cooled engine To simplify the connection of a cylinder barrel and a cylinder head to, a crankcase and to reduce the weight of an engine. A liquid-cooled engine is provided with the crankcase wherein a cylinder barrel having a water jacket on the cylinder side for cooling is conne... | 07/04/2006 |
| 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 |
| 6318309 | Opposed piston engine with reserve power capacity Two pistons are reciprocatively disposed in each cylinder of an engine thereby forming combustion chambers at each end of the cylinder that operate in a four-stroke cycle, and a third combustion chamber formed between the pistons that selectively operates... | 11/20/2001 |
| 6279519 | Air and water cooled opposed cylinder aircraft engine An internal combustion piston engine with horizontally opposed cylinders. Each opposed pair of cylinders fires simultaneously, providing symmetric cranking force on the crankshaft 13. Each cylinder 1 is a simple solid of rotation with air-cooling fins 10.... | 08/28/2001 |
| 6240885 | Inboard four cycle gasoline marine engine for small water craft An inboard gasoline marine engine for small water craft comprises a two cylinder horizontally opposed four stroke engine. The engine includes a massive crank shaft rotationally mounted in the crank case of the engine. A small flywheel is connected to one ... | 06/05/2001 |
| 6240887 | Multi-cylinder engine A multi-cylinder engine in which a transmission mechanism is provided between a cam shaft linked with intake valves and exhaust valves and a crank shaft rotatably supported by a crank case and a plurality of bearing caps, wherein the transmission mechanis... | 06/05/2001 |
| 6213064 | Double throw engine An engine is described having pistons and cylinder arranged in mutually orthogonal pairs. Each pair is driven by a respective crank, with the pairs of cranks rotating about a primary crank which in turn rotates about an axis orthogonal to the axes of the ... | 04/10/2001 |
| 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 |
| 6073595 | Engine construction An in-line opposed cylinder engine constructed of a pair of half blocks which when combined form a pair of spaced cylinder heads and an intermediate crankcase and in which the cylinder heads and the intermediate crankcase are tied together by a plurality ... | 06/13/2000 |
| 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 |
| 5943987 | Reciprocating piston engine with adjacent cylinders in the crankshaft direction in an engine case A reciprocating drive system in a reciprocating piston engine with adjacent cylinders in the crankshaft direction in an engine case is particularly directed to an internal-combustion engine which comprises a reciprocating drive system for the reciprocatin... | 08/31/1999 |
| 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 |
| 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 |
| 5778835 | Internal combustion engine An internal combustion engine, having a compact eccentric crankshaft which permits a straight passage to be formed along the center of rotation of the crankshaft. When applied to a two cylinder engine the crankshaft design permits longitudinal alignment o... | 07/14/1998 |
| 5579729 | Internal combustion engine An opposed-cylinder internal-combustion engine, includes a cylinder block and crankcase which is longitudinally divided in the center of the crankshaft bearing. A bearing support is connected with the crankcase by way of cylinder head bolts. The cylinder ... | 12/03/1996 |
| 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 |
| 5535715 | Geared reciprocating piston engine with spherical rotary valve A gear driven four cycle, opposed, internal combustion engine with pairs of twin pistons connected by a semi-rigid shaft converts reciprocating motion to rotary torque by segmented upper and lower rack and pinion gears which alternate left and right, abov... | 07/16/1996 |
| 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 |
| 5406859 | Device for transferring power between linear and rotary motion The invention is a versatile device for transferring power between rotary and reciprocating linear motion comprising a rack assembly with opposed, spaced apart longitudinal portions joined by curved end portions arrayed to form a substantially continuous ... | 04/18/1995 |
| 5375566 | Internal combustion engine with improved cycle dynamics A reciprocating piston internal combustion engine has a scotch yoke-type 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 aper... | 12/27/1994 |
| 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 |
| 5131353 | Crank loop frame for a crank loop drive of an internal combustion engine In a crank loop frame for a crank loop drive of an internal combustion engine for the transformation of a back and forth motion into a rotary motion, each of the slideway frame, webs of the crank loop frame includes portions of a heat capacity sufficient ... | 07/21/1992 |
| 5062394 | Mechanism for converting reciprocatory motion into rotary motion in an engine A two stroke reciprocating internal combustion or external compression engine which has at least two of needed power connecting posts mounted on each end of a carrier mechanical assembly which slides in a guided area by virtue of the engine's stator desig... | 11/05/1991 |
| 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 |
