Class F01B : MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
Subclass 7/02: Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F01B 1/08) with oppositely reciprocating pistons
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12000331 | High-efficiency linear generator | Dec 07, 22 | Jun 04, 24 | Mainspring Energy, Inc. |
| 11831225 | Free piston generator based on rigid synchronous transmission system | Dec 29, 21 | Nov 28, 23 | Harbin Engineering University |
| 11773769 | Piston for an opposed-piston engine | Jul 26, 22 | Oct 03, 23 | Achates Power Inc. |
| 11735978 | Free piston generator based on rigid synchronous transmission system | Dec 29, 21 | Aug 22, 23 | Harbin Engineering University |
| 11525391 | High-efficiency linear generator | Nov 30, 20 | Dec 13, 22 | Mainspring Energy, Inc. |
| 11396841 | Air handling in a heavy-duty opposed-piston engine | Feb 13, 20 | Jul 26, 22 | Achates Power Inc. |
| 11274552 | Engine crank and connecting rod mechanism | Aug 23, 21 | Mar 15, 22 | Not available |
| 11098586 | Engine crank and connecting rod mechanism | Mar 14, 21 | Aug 24, 21 | Not available |
| 11085297 | Opposed piston engine and elements thereof | Feb 24, 17 | Aug 10, 21 | Enginuity Power Systems, Inc. |
| 10962350 | Systems and methods for measurement of piston-to-piston clearances in multi-cylinder opposed piston engines | Dec 03, 18 | Mar 30, 21 | Cummins Inc. |
| 10947847 | Engine crank and connecting rod mechanism | Mar 12, 20 | Mar 16, 21 | Not available |
| 10890070 | Free piston device | Nov 15, 18 | Jan 12, 21 | Deutsches Zentrum für Luft- und Raumfahrt e. V. |
| 10871099 | Piston cooling for opposed-piston engine | Aug 25, 17 | Dec 22, 20 | Achates Power Inc. |
| 10851708 | High-efficiency linear combustion engine | Feb 12, 19 | Dec 01, 20 | Mainspring Energy, Inc. |
| 10852040 | Linear expander and cryogenic refrigeration system including the same | Dec 21, 15 | Dec 01, 20 | KOREA INSTITUTE OF MACHINERY & MATERIALS |
| 10844718 | Free piston apparatus | Nov 15, 18 | Nov 24, 20 | Deutsches Zentrum für Luft- und Raumfahrt e. V. |
| 10738720 | Method for controlling an air boosting apparatus in a two-stroke, opposed piston engine, and a two-stroke, opposed piston engine with an air boosting apparatus | Sep 29, 14 | Aug 11, 20 | Volvo Truck Corporation |
| 10724467 | Pistons with thermal barrier coatings | Oct 27, 17 | Jul 28, 20 | Cummins Inc. |
| 10612380 | Free piston device and method for operating a free piston device | Nov 15, 18 | Apr 07, 20 | Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) |
| 10605081 | Free-piston device and method for operating a free-piston device | Nov 15, 18 | Mar 31, 20 | Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0287,930 | HIGH-EFFICIENCY LINEAR GENERATOR | Apr 30, 24 | Aug 29, 24 | Not available |
| 2023/0098,581 | OPPOSED, FREE-PISTON ENGINE | Jan 26, 21 | Mar 30, 23 | Not available |
| 2020/0208,522 | Engine Crank and Connecting Rod Mechanism | Mar 12, 20 | Jul 02, 20 | Not available |
| 2020/0182,114 | EXHAUST PLENUM CHAMBER CONSTRUCTIONS INCLUDING THERMAL BARRIER COATINGS FOR OPPOSED-PISTON ENGINES | Feb 05, 20 | Jun 11, 20 | Achates Power Inc. |
| 2020/0088,033 | SUPERCHARGER PROTECTION IN AN OPPOSED-PISTON ENGINE WITH EGR | Oct 25, 19 | Mar 19, 20 | Achates Power Inc. |
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