# US 2017/0284292 A1 · Apparatus for Increasing Efficiency in Reciprocating Type Engines > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284292 A1 - Document ID: US20170284292A1 - Status: Published application - Kind: A1 - Application number: 15/089,774 - Filed: 2016-04-04 - Published: 2017-10-05 - Earliest claimed: 2016-04-04 - Inventors: Jay Kinzie - Web page: https://patentgrep.com/patent/US20170284292A1 ## CPC - F02B 75/32: Engines characterised by connections between pistons and main shafts and not specific to preceding main groups - F01B 9/047: {with rack and pinion} - F02B 75/24: with cylinders arranged oppositely relative to main shaft and of "flat" type - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F01B: MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F01C; of non-positive-displacement type F01D; internal-combustion engines F02B; combustion-product engine plants F02G; machines or engines, other than of positive-displacement type, for liquids F03B; positive-displacement engines driven by liquids F03C; wind motors F03D; positive-displacement machines for liquids F04B; rotary-piston, or oscillating-piston, positive-displacement machines for liquids F04C) ## Abstract A reciprocating internal combustion engine is disclosed having co-axially aligned cylinder blocks within a housing, each cylinder block having a piston structure comprising a piston head and a connecting rod. The piston heads are adapted to reciprocate within their respective cylinder blocks. The connecting rods are connected to opposite ends of a central yoke structure, pivotally, with the ability to angularly deviate from a longitudinal axis during a cycle of motion. The central yoke structure consists of a roller gear disposed within a void of the central yoke structure, and the linear motion of the piston structure is translated into the rotary motion of the roller gear. ## Claims ### Claim 1 A reciprocating internal combustion engine comprising: a. a housing; b. a pair of co-axially aligned cylinder blocks in the housing; c. a piston structure located within each of the pair of co-axially aligned cylinder blocks, wherein each of the piston structures comprises a connector rod and a piston head; d. a central yoke structure, wherein each piston structure is pivotally connected to an opposite end of the central yoke structure; and e. a roller gear disposed within a void of the central yolk structure. ### Claim 2 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein the piston structure moves in a linear manner within the co-axially aligned cylinder blocks. ### Claim 3 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein the pivotal connection of the connector rods to the opposite ends of the central yoke structure is by means of a wrist pin. ### Claim 4 (depends on 3) The reciprocating internal combustion engine of claim 3, wherein the pivotal connection between the opposite ends of the central yoke structure and the respective connector rods allows an angular deflection from a longitudinal axis, during one cycle of motion. ### Claim 5 (depends on 4) The reciprocating internal combustion engine of claim 4, wherein the angular deflection is within the range of 0-10 degrees, during one cycle of motion. ### Claim 6 (depends on 4) The reciprocating internal combustion engine of claim 4, wherein the angular deflection from a longitudinal axis, when one of the piston structures is in top dead center position, is close to 0 degrees. ### Claim 7 (depends on 4) The reciprocating internal combustion engine of claim 4, wherein the angular deflection from the longitudinal axis, of one connector rod, with respect to the other, is the same amount of degrees and in the same direction, during each phase of one cycle of motion. ### Claim 8 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein each connector rod is pivotally connected to its respective piston head. ### Claim 9 (depends on 8) The reciprocating internal combustion engine of claim 8, wherein the pivotally connection to the piston head is by means of a wrist pin. ### Claim 10 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein the position and movement of each of the piston structures is 180 degrees out of phase with each other. ### Claim 11 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein the roller gear moves within the void of the central yoke structure in a circular manner. ### Claim 12 (depends on 11) The reciprocating internal combustion engine of claim 11, wherein the roller gear is an internally toothed gear. ### Claim 13 (depends on 12) The reciprocating internal combustion engine of claim 12, wherein the toothed roller gear's movement within the void of the central yoke structure is facilitated by a cooperating L slot teeth arrangement within an internal circumference of the central yoke structure. ### Claim 14 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein the roller gear moves within the void of the central yoke structure in a circular manner. ### Claim 15 (depends on 14) The reciprocating internal combustion engine of claim 14, wherein the roller gear is a smooth circular structure. ### Claim 16 (depends on 15) The reciprocating internal combustion engine of claim 15, wherein the circular movement of the roller gear within the central yoke structure is facilitated by tracks being dug into an internal circumference of the void of the central yoke structure. ### Claim 17 (depends on 1) The reciprocating internal combustion engine of claim 1, wherein during one cycle of motion the piston structure acts on the central yoke structure linearly. ### Claim 18 (depends on 17) The reciprocating internal combustion engine of claim 17, wherein the roller gear receives the linear force from an inner dimension of the central yoke structure. ### Claim 19 (depends on 18) The reciprocating internal combustion engine of claim 18, wherein during one cycle of motion the roller gear translates across the central yoke structure to generate a torque.