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| Number | Title | Issue Date |
| 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 |
| 7258086 | Four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable piston stroke A four-cycle, four-cylinder, premixed charge compression ignition internal combustion reciprocating free piston engine with a variable piston stroke and a compression ratio that varies as needed to provide charge ignition, to offer the potential of higher efficiency... | 08/21/2007 |
| 7219647 | Force transfer mechanism for an engine A multiple watt-linkage force transfer mechanism is provided for an internal-combustion engine. The force transfer mechanism comprises two “bell cranks” that are used to drive a single crankshaft through a watt linkage mechanism. Each bell crank, in turn, is dri... | 05/22/2007 |
| 7159558 | Engine having centralized mass An engine is constructed such that respective centers of gravity of a crank shaft, a balancer shaft and a cylinder are positioned close to one another and the mass of the engine is thus centralized. The engine includes a shaft center of a cylinder that is offset to ... | 01/09/2007 |
| 7005757 | Pneumatic human power conversion system based on children's play When large numbers of children play in a playground, part of the power of their play could be usefully harnessed resulting in large energy storage. This stored energy can then be converted for basic, low-power, applications in the school such as lighting, communicat... | 02/28/2006 |
| 6904888 | Reciprocating piston device A reciprocating piston engine (or motor) includes plural reciprocating pistons operatively connected to a single intermediate oscillating shaft, and a crankshaft having a single crank pin operatively connected to the oscillating shaft, so that the crankshaft experie... | 06/14/2005 |
| 6851401 | Device for converting a linear movement into a rotary movement A device for converting a rectilinear movement into a rotary movement, comprising at least one piston-cylinder mechanism having a cylinder and a piston moveable arranged in the cylinder for rectilinear movement, a crankshaft for rotary movement, and a connecting rod... | 02/08/2005 |
| 6722127 | Split four stroke engine A four stroke engine including a crankshaft. A power piston within a first cylinder connected to the crankshaft such that the power piston reciprocates through a power stroke and an exhaust stroke. A compression piston within a second cylinder is connected to the cr... | 04/20/2004 |
| 6647935 | Reciprocating internal combustion engine In a rockable-cam equipped reciprocating internal combustion engine, a rockable cam is rotatably fitted on the outer periphery of an intake-valve drive shaft that is rotatable in synchronism with rotation of a crankshaft. The rockable cam oscillates withi... | 11/18/2003 |
| 6609371 | Split four stroke engine A four stroke cycle internal combustion engine including a crankshaft, rotating about a crankshaft axis of the engine. A power piston is slidably received within a first cylinder and operatively connected to the crankshaft such that the power piston recip... | 08/26/2003 |
| 6543225 | Split four stroke cycle internal combustion engine A four stroke cycle internal combustion engine including a crankshaft, rotating about a crankshaft axis of the engine. A power piston is slidably received within a first cylinder and operatively connected to the crankshaft such that the power piston recip... | 04/08/2003 |
| 6158402 | Engine block structure in multi-cylinder engine In an engine block structure in a multi-cylinder engine in which a piston is incorporated from the side of a crank chamber into each of a plurality of cylinders disposed in series in a cylinder block, cylinder axes of the two adjacent cylinders are dispos... | 12/12/2000 |
| 6058901 | Offset crankshaft engine The cylinders (12; 48, 50) are disposed such that each piston-cylinder axis (16; 56, 58) does not intersect the crankshaft axis (20; 47). Timing of combustion within each cylinder is controlled to cause maximum combustion pressure to occur when an imagina... | 05/09/2000 |
| 5983845 | Rotational motion mechanism and engine An object of the present invention is to provide a rotary drive system and an engine which have greater toughness and which are capable of smoothly converting linear thrust force into rotary torque. In the present invention, a pair of elongated members ar... | 11/16/1999 |
| 5816201 | Offset crankshaft mechanism for an internal combustion engine An offset crankshaft mechanism for an internal combustion engine which allows for greater efficiency and increased torque. The invention includes an engine block, a crankcase, one or more piston cylinders each having a piston reciprocally disposed therein... | 10/06/1998 |
| 5546897 | Internal combustion engine with stroke specialized cylinders A multi-cylinder reciprocating piston internal combustion engine is divided into a working section and a compressor section, with the working section supporting the combustion function and the compressor dedicated solely to infusion of intake charge into ... | 08/20/1996 |
| 5544627 | Engine design for gasoline/diesel engines Improved designs for the internal combustion engine are disclosed. The first embodiment of the invention relates to a configuration in which the cylinder/piston assembly is inclined at an oblique angle relative to the center axis of rotation of the cranks... | 08/13/1996 |
| 5448970 | Crankshaft connection for internal combustion engine The invention relates to internal combustion engines and provides for the use of a piston cylinder within which a piston slidably reciprocates. A piston rod is pivotally attached at one of its ends to the piston and at its second end to a connector arm wh... | 09/12/1995 |
| 5394839 | Internal combustion engine An internal combustion engine in which a circular housing is journaled to an end of a connecting rod remote from a piston at an eccentricity, and a rotary member is rotatably received in the circular housing, with an output shaft connected to the outer su... | 03/07/1995 |
| 5297448 | Crank mechanism A crank mechanism for an internal combustion engine comprises a cylinder, a piston reciprocalable within the cylinder, and a rotatable shaft. The piston is in drivable in connection with the shaft via a connecting rod, a slipper, and a torque lob. The con... | 03/29/1994 |
| 5265565 | Reciprocating engine An engine (40) comprising a piston (2); a top ring (3) and a second ring (4) attached to the piston (2); partitioning members (9)(10) attached to the piston (2) and connecting the top ring (3) and the second ring (4) so as to form a gas chamber (8) at the... | 11/30/1993 |
| 5186127 | Internal combustion engine with offset connecting journal An internal combustion engine of the type having at least one piston cylinder, a piston reciprocating within each of said cylinder, an off-set crankshaft disposed at a predetermined distance sidewardly from the vertical axis of the cylinder counter to the... | 02/16/1993 |
| 5076220 | Internal combustion engine In an internal combustion engine wherein the air inlet ports are opened and closed directly by the reciprocating movement of the piston, the crankshaft is laterally offset from the central plane common to the longitudinal axes of all of the cylinders. Thi... | 12/31/1991 |
| 4945866 | Altered piston timing engine An internal combustion engine in which the center line of each cylinder is offset from the rotational axis of the crankshaft in the direction of rotation. The resulting altered piston timing provides earlier effective torque during the power stroke, inher... | 08/07/1990 |
| 4712518 | Power output mechanism for an internal combustion engine The present invention relates to an apparatus for converting between reciprocating motion and rotational motion, and particularly involves such an apparatus used as a power output mechanism for an internal combustion engine. The end of a piston rod is con... | 12/15/1987 |
| 4708096 | Internal combustion engine The cylinder head of each power cylinder of this internal combustion engine includes an auxiliary cylinder in communication with the power cylinder. An auxiliary piston is moveable within the auxiliary cylinder in synchronism with the power piston. During... | 11/24/1987 |
| 4672923 | Internal combustion engine with at least two liquid cooled cylinders Each cylinder of a liquid cooled in-line internal combustion engine includes a cylinder pipe surrounded by an annular cooling chamber. The cooling chambers are interconnected in series by crossover passages between adjacent cylinder pipes and the cooling ... | 06/16/1987 |
| 4664077 | Reciprocating internal combustion engine A reciprocating internal combustion engine has a head block axially slidably mounted in a bore formed in a cylinder block in alignment with the cylinder bore, and a cam for moving the head block in the bore in accordance with the position of the piston. T... | 05/12/1987 |
| 4651685 | Paired beam engines and pumps The engines may be either the swing beam or the rocker beam type and each has its crankshaft in a central, transverse plane of the block. Each engine has at least one pair of cylinders with each having a piston and a head. A link pivotally connected to ea... | 03/24/1987 |
| 4517932 | Paired beam engines and pumps The engines may be of either the swing beam or the rocker beam type and each has its crankshaft in a central, transverse plane of the block. Each engine has at least one pair of cylinders with each having a piston and a head. A link pivotally connected to... | 05/21/1985 |
| 4498430 | Linear reciprocating piston engine This invention is an improvement over the arrangement and couplings between the piston rod and output power shaft in an internal combustion engine. The piston rod's reciprocating movement is substantially linear along the center line of the rod and piston assi... | 02/12/1985 |
| 4466388 | Compression ignition internal combustion engine A compression ignition engine includes a pair of axially aligned pistons which are reciprocable in a common cylinder and each connected to a crankshaft by a linkage system which includes a rocker beam. Characteristically, it is proposed that a strut by wh... | 08/21/1984 |
| 4465042 | Crankless internal combustion engine A power transmission mechanism primarily adapted for converting reciprocating motion of a piston within a cylinder to rotary motion includes a cam member defining a closed loop cam track having first and second spaced, essentially vertical runs. A shaft i... | 08/14/1984 |
| 4433649 | Engine An internal combustion engine has a piston rack depending from each piston. This rack is connected to a power output shaft through a mechanical rectifier so that the power output shaft rotates in only one direction. A connecting rod is pivotally connected... | 02/28/1984 |
| 4363299 | Crankless internal combustion engine A mechanism for converting reciprocating movement of a piston within a cylinder includes a guide defining a closed loop path, an output shaft, and a driven member having a periphery extending along the path. A rod is connected at one end to the piston and... | 12/14/1982 |
| 4346677 | Combustion engine with substantially constant compression A variable length stroke piston is provided in an internal combustion engine having an engine block means including a toroidal shaped cylinder, a piston positioned in the cylinder for arcuate reciprocation therein, a piston rod means pivotally positioning... | 08/31/1982 |
| 4274367 | Reciprocating piston beam engine In the disclosed internal combustion engine opposing identical pairs of pistons drive back and forth arm ends of a centrally pivoted beam which is symmetrical about its pivot. Torque is extracted from the beam through an eccentric mechanism which is locat... | 06/23/1981 |
| 4270495 | Variable displacement piston engine A family of balanceable, variable displacement reciprocating piston engine arrangements is disclosed. The arrangements include multiple parallel cylinders having pistons movable therein in balanceable fashion through a fixed geometry rocker mechanism driv... | 06/02/1981 |
| 4156410 | Internal combustion reciprocating engine An internal combustion engine having a housing defining a pair of axially aligned and opposing cylinders with a lubricant chamber therebetween, a stationary piston in the housing extending through the lubricant chamber and having opposite ends disposed wi... | 05/29/1979 |
| 3985475 | Expansible chamber device An expansible chamber device with offset pistons and a crankshaft having crankpins asymmetrically angularly spaced about its axis of rotation to provide symmetrically spaced peaks in the total torque at the crankshaft throughout each complete revolution t... | 10/12/1976 |
