Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9052002 | Continuously variable transmission having speed control | Timothy James Cyders | 2015-06-09 |
| 8857173 | Two piston, concentric cylinder, alpha free piston Stirling machine | — | 2014-10-14 |
| 8590300 | Balanced multiple groupings of beta stirling machines | James Gary Wood | 2013-11-26 |
| 7685818 | Connection of a free-piston stirling machine and a load or prime mover permitting differing amplitudes of reciprocation | — | 2010-03-30 |
| 7230506 | Crosstalk reduction for a system of differential line pairs | John T. Stonick, Jeffrey L. Sonntag | 2007-06-12 |
| 7011322 | Automatic transmission with stepless, continuously variable speed and torque ratio | — | 2006-03-14 |
| 6684637 | Parallel slot heat exchanger | — | 2004-02-03 |
| RE38337 | Centering system for free piston machine | — | 2003-12-02 |
| 6170442 | Free piston internal combustion engine | — | 2001-01-09 |
| 6035637 | Free-piston internal combustion engine | William L. Kopko | 2000-03-14 |
| 5873246 | Centering system for free piston machine | — | 1999-02-23 |
| 5775273 | Free piston internal combustion engine | — | 1998-07-07 |
| 5537820 | Free piston end position limiter | Nicholas van der Walt, Reuven Unger | 1996-07-23 |
| 5525845 | Fluid bearing with compliant linkage for centering reciprocating bodies | Nicholas van der Walt, Reuven Unger | 1996-06-11 |
| 5502968 | Free piston stirling machine having a controllably switchable work transmitting linkage between displacer and piston | — | 1996-04-02 |
| 5461859 | Centering system with one way valve for free piston machine | Neill Lane, Jarlath McEntee | 1995-10-31 |
| 5385021 | Free piston stirling machine having variable spring between displacer and piston for power control and stroke limiting | — | 1995-01-31 |
| 5148066 | Linear generator or motor with integral magnetic spring | Robert W. Redlich | 1992-09-15 |
| 4945726 | Leaky gas spring valve for preventing piston overstroke in a free piston stirling engine | — | 1990-08-07 |
| 4912929 | Variable gas spring for matching power output from FPSE to load of refrigerant compressor | Gong Chen | 1990-04-03 |
| 4888951 | Phase synchronization and vibration cancellation for free piston Stirling machines | — | 1989-12-26 |
| 4888950 | Magnetic driven hydrodynamic lubrication system for free piston stirling engine | — | 1989-12-26 |
| 4805408 | Stirling engine power regulation system | David M. Berchowitz | 1989-02-21 |
| 4802332 | Sliding surface lubrication particularly advantageous for a free piston stirling engine | — | 1989-02-07 |
| 4738105 | Compact crank drive mechanism with guided pistons | M. Andrew Ross | 1988-04-19 |