Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7036311 | Hydrostatic transmission | Alan Johnson | 2006-05-02 |
| 6941753 | Hydrostatic transmission | Alan Johnson | 2005-09-13 |
| 6672057 | Hydrostatic transmission | Alan Johnson | 2004-01-06 |
| 6550243 | Hydrostatic transmission | Alan Johnson | 2003-04-22 |
| 6526749 | Hydrostatic transmission | Alan Johnson | 2003-03-04 |
| 6301884 | Brake design for a hydrostatic transaxle | Alan Johnson | 2001-10-16 |
| 6261201 | Differential gear mechanism | Alan Johnson | 2001-07-17 |
| 6256989 | Method and apparatus for improved hydrostatic transmission having bypass | Alan Johnson | 2001-07-10 |
| 6256988 | Rider transaxle having improved hydrostatic transmission | Alan Johnson | 2001-07-10 |
| 6014861 | Hydrostatic transmission | Alan Johnson | 2000-01-18 |
| 5771758 | Axle driving apparatus having improved casing design | — | 1998-06-30 |
| 5768892 | Rider transaxle having improved hydrostatic transmission | Alan Johnson | 1998-06-23 |
| 5689955 | Hydrostatic transaxle having improved brake design | Alan Johnson | 1997-11-25 |
| 5628189 | Charge pump for axle driving apparatus including hydrostatic transmission | Daryl Smothers, John Schreier | 1997-05-13 |
| 5616092 | Transaxle having hydrostatic transmission with expansion chamber | Alan Johnson | 1997-04-01 |
| 5613409 | Axle driving apparatus having improved casing design | — | 1997-03-25 |
| 5557931 | Charge pump for axle driving apparatus including hydrostatic transmission | Daryl Smothers, John Schreier | 1996-09-24 |
| 5555727 | Auxiliary pumps for axle driving apparatus including hydrostatic transmission | Daryl Smothers, John Schreier | 1996-09-17 |
| 5501640 | Transaxle having hydrostatic transmission with hydraulic reduction | Alan Johnson | 1996-03-26 |
| 5497623 | Hydrostatic pump and motor unit | Alan Johnson | 1996-03-12 |
| 5423182 | Improved hydrostatic transmission | Alan Johnson | 1995-06-13 |
| 5392670 | Heavy duty hydrostatic transaxle having parallel pump motor dual-reduction and driven-axle shafts | — | 1995-02-28 |
| 5330394 | Rider transaxle having improved hydrostatic transmission | Alan Johnson | 1994-07-19 |
| 5314387 | Hydrostatic transmission | Alan Johnson | 1994-05-24 |
| 5201692 | Rider transaxle having hydrostatic transmission | Alan Johnson | 1993-04-13 |