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公开(公告)号:US12000331B2
公开(公告)日:2024-06-04
申请号:US18077007
申请日:2022-12-07
Applicant: MAINSPRING ENERGY, INC.
Inventor: Adam Simpson , Shannon Miller , Matt Svrcek
IPC: F02B71/04 , F01B11/00 , F02B25/08 , F02B63/04 , F02B71/00 , F02B75/28 , H02K7/18 , H02K35/02 , F01B7/02 , F02B1/12
CPC classification number: F02B71/04 , F01B11/001 , F02B25/08 , F02B63/041 , F02B71/00 , F02B75/282 , H02K7/1892 , H02K35/02 , F01B7/02 , F01B11/007 , F02B1/12
Abstract: Various embodiments of the present invention are directed toward a linear generator, comprising: a cylinder having a cylinder wall and a pair of ends, the cylinder including a reaction section disposed in a center portion of the cylinder; a pair of opposed piston assemblies adapted to move linearly within the cylinder, each piston assembly disposed on one side of the reaction section opposite the other piston assembly, each piston assembly including a spring rod and a piston comprising a solid front section adjacent the reaction section and a gas section; and a pair of linear electromagnetic machines adapted to directly convert kinetic energy of the piston assembly into electrical energy, and adapted to directly convert electrical energy into kinetic energy of the piston assembly for providing compression work during the compression stroke.
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公开(公告)号:US11982186B1
公开(公告)日:2024-05-14
申请号:US18080638
申请日:2022-12-13
Applicant: Walter B. Freeman
Inventor: Walter B. Freeman
CPC classification number: F01B23/10 , F01B11/001 , F01B25/10 , F01B31/08 , F01K11/00 , F01B31/10 , H02K7/1884
Abstract: A vapor powered electro-mechanical generator comprises a cylinder, which is sealed at both ends in which two pistons slidingly move in opposite directions simultaneously. A tube on which the pistons also slide lies at the center of the longitudinal axis of the cylinder. The tube transfers vapor from the inlet to the pressurized side of the pistons to actuate pistons, while one or more exhaust valves are simultaneously opened on the opposite end of the piston stroke allowing the expanded vapor to flow to a condensing system. The pistons consist of magnets at their peripheral circumference. As the vapor expands, the pistons magnets move through coils of conductive wire producing electric current. Further, repulsion magnets repel corresponding piston magnets to provide a cushioned rebound effect while conserving momentum of the generator.
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公开(公告)号:US11879337B2
公开(公告)日:2024-01-23
申请号:US17609103
申请日:2019-05-07
Applicant: SARUS SAS
Inventor: Quentin Danel , Madhav Rathour
IPC: F01B11/00
CPC classification number: F01B11/007
Abstract: Disclosed is a thermodynamic cycle process, performing transfer between mechanical and heat energies, by changing a state of a fluid, including: an expansion of the fluid, an energy retrieval from the fluid expansion, a step of powering a liquid pump or a gas compressor with the retrieved energy, using a cyclic free piston expander which alternatively changes direction of the free piston sliding: by alternatively: closing the fluidic communication between the both opposite sides of the free piston, to make different from each other the pressures applied respectively thereon, so the free piston slides in a first direction, opening a fluidic communication between both opposite sides of the free piston, to make equal to each other the pressures applied respectively thereon, so the free piston slides in a second direction opposite to the first direction, the free piston sliding, directly and mechanically, opening and closing, the fluidic communication.
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公开(公告)号:US11441534B2
公开(公告)日:2022-09-13
申请号:US17310621
申请日:2020-02-18
Applicant: Flapump AS
Inventor: Jostein Fladby , Trygve Fladby , Sissel Fladby van Woensel Kooy
Abstract: A fluid-driven linear motor comprises a cylinder, a piston, and a piston rod connected to the piston. Two sides of the piston in the cylinder are alternately supplied with fluid from a slide valve arrangement. The slide valve arrangement includes a slide and a pilot rod adapted to alternately set a through-bore of a slide in fluid connection with the ends of the slide when the piston is located in its end positions. The pilot rod is provided with an extension rod adapted to move inside a bore of the piston and the piston rod, so that the stroke length of the linear motor can be extended. A pressure chamber is provided at the distal end of the pilot rod. The pressure chamber is adapted to hold the pilot rod with a holding force when in its end positions until mechanical forces from the piston overcome said holding force.
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公开(公告)号:US20220282620A1
公开(公告)日:2022-09-08
申请号:US17825928
申请日:2022-05-26
Applicant: Aquarius Engines (A.M.) Ltd.
Inventor: Shaul Haim YAAKOBY
IPC: F01B11/00 , F01L7/02 , F01N13/10 , F02B71/00 , F02B71/04 , F02B75/00 , F02F1/00 , F02F1/06 , F02F1/22 , F02F1/24 , F02F3/00 , F02F3/28 , F02M35/10 , F02M61/14 , F16J1/00 , F16J1/12 , F16J7/00 , F16J9/06 , F16J9/12 , F16J9/20
Abstract: An internal combustion may include a cylinder having a first combustion chamber at one end and a second combustion chamber at an opposing end, first and second cylinder heads located at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted therein. The piston may be configured to move in a first stroke that includes an expansion stroke portion and a non-expansion stroke portion. The engine may further include first and second piston rod portions extending from opposite faces of the piston. A recess in the piston rod portions may be configured to communicate gases between a combustion chamber and locations outside the cylinder. There may also be a chamber surrounding the first or second piston rod portion, the chamber configured to be supplied with gas and the chamber being isolated from the first combustion chamber and the second combustion chamber.
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公开(公告)号:US11306590B2
公开(公告)日:2022-04-19
申请号:US16962081
申请日:2019-01-11
Applicant: Graco Minnesota Inc.
Inventor: Martin P. McCormick , Benjamin J. Dauwalter , Kenneth C. Floer
Abstract: An air motor assembly includes an exhaust block with an exhaust port that conveys exhaust air into an exhaust manifold. The exhaust port includes an expansion chamber that creates a pressure drop in the exhaust gas, thereby decreasing the temperature of the exhaust gas. The expansion chamber is defined between a first wall that is tangential to the air motor cylinder and a second wall that is transverse to an axis of the exhaust port. Poppet valves control actuation of a shuttle. The poppet valves are disposed on the exterior of the air motor assembly and are thermally insulated from the air motor assembly.
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公开(公告)号:US20220085694A1
公开(公告)日:2022-03-17
申请号:US17420479
申请日:2020-01-03
Applicant: LIBERTINE FPE LTD
Inventor: Samuel Cockerill , Edward Haynes
Abstract: A linear electrical machine (LEM) comprising: at least onestator mounted in a housing, the housing and stator defining a working cylinder; a two-section central core within the working cylinder, wherein the two sections of the core are co-axial, separate and cantilever mounted within the working cylinder; a cylindrical stator bore cavity between the working cylinder and the two central core sections; and one or more hollow translators, each translator being axially movable within the stator bore cavity, such that each section of the central core is traversed by part of the one or more translators, thereby forming an exterior magnetic circuit airgap between the respective translator and stator.
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公开(公告)号:US20210324812A1
公开(公告)日:2021-10-21
申请号:US17350224
申请日:2021-06-17
Applicant: Mainspring Energy, Inc.
Inventor: Matthew Roelle , Christopher Gadda
Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.
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公开(公告)号:US20210010437A1
公开(公告)日:2021-01-14
申请号:US16910673
申请日:2020-06-24
Applicant: Mainspring Energy, Inc.
Inventor: Matthew Roelle , Christopher Gadda
Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.
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公开(公告)号:US10815878B2
公开(公告)日:2020-10-27
申请号:US15915877
申请日:2018-03-08
Applicant: The Government of the United States of America, as represented by the Secretary of Homeland Security
Inventor: Shane R. J. Rainey , Thomas C. Rodzewicz , Julian J. Blanco , Ryan T. Ostrander
IPC: F02B63/04 , F02D13/02 , F02D41/14 , F02D41/30 , F02B75/24 , F02N11/04 , H02K7/18 , H02P9/04 , F01B11/00 , H02P25/06 , F02B71/00 , F01B11/02 , H02P9/00 , F02M25/03 , F02B1/14 , F02B75/18 , F02D41/00 , F02B47/02 , F02D41/34 , F02M25/025 , F02D15/00
Abstract: A homogeneous charge compression ignition free-piston linear generator is disclosed. The linear generator includes a housing having cylinders at opposite ends. A double-ended piston assembly is to move linearly in the housing to convert kinetic energy of the piston assembly into electrical energy, and to enable conversion of electrical energy into kinetic energy of the piston assembly. Sensors measure one or more states of the cylinders and/or piston assembly, and a controller controls the linear generator based on the sensor data.
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