Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10934227 | Compost bin | Richard Wallis, Grant Stevens | 2021-03-02 |
| D812835 | Frame for compost bin | Richard Wallis | 2018-03-13 |
| 7621249 | Port sealing in a rotary valve | Andrew Thomas | 2009-11-24 |
| 7584741 | Internal combustion engine with rotary valve | Andrew Thomas, Glenn Horrocks | 2009-09-08 |
| 7458357 | Gas sealing element for a rotary valve engine | — | 2008-12-02 |
| 7401587 | Gas and oil sealing in a rotary valve | Andrew Thomas | 2008-07-22 |
| 6994067 | Valve timing mechanism for a rotary valve internal combustion engine | — | 2006-02-07 |
| 6763788 | Variable timing mechanism for a rotary valve | — | 2004-07-20 |
| 5529037 | Lubrication system for rotary valve | — | 1996-06-25 |
| 5526780 | Gas sealing system for rotary valves | — | 1996-06-18 |
| 5509386 | Sealing means for rotary valves | Andrew Thomas | 1996-04-23 |
| 5503124 | Rotary valve with seal supporting tongue | — | 1996-04-02 |