Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11719074 | Dissolvable plugged nozzle assembly for limited entry liners | Indranil Roy | 2023-08-08 |
| 8517887 | Clutch device | — | 2013-08-27 |
| 8142326 | Multi-gear mechanism for power tools | — | 2012-03-27 |
| 8047057 | Output mode switching apparatus | — | 2011-11-01 |
| 7900713 | Main shaft locking mechanism | — | 2011-03-08 |
| 7841424 | Power output mechanism for power tools | — | 2010-11-30 |
| 7494437 | Impact power tool | — | 2009-02-24 |
| 7455615 | Transmission mechanism | — | 2008-11-25 |
| 7377331 | Damping driving axle | — | 2008-05-27 |
| 6959478 | Shockproof spindle | — | 2005-11-01 |
| 6926095 | Power tool transmission device | — | 2005-08-09 |
| 6824491 | Power transmission device with automatic speed switching mechanism | — | 2004-11-30 |
| 6758783 | Automatic speed shifting device | — | 2004-07-06 |
| 6715562 | Output shaft locking device | — | 2004-04-06 |
| 6682284 | Nut having locking mechanism and low operating torque requirement | — | 2004-01-27 |
| 6655470 | Speed changing mechanism for tools | — | 2003-12-02 |
| 6533093 | Torque adjusting device for a drill | — | 2003-03-18 |
| 6338404 | Locking device of power hand tool | — | 2002-01-15 |
| 6202759 | Switch device for a power tool | — | 2001-03-20 |
| 6196943 | Electric tool knob control apparatus | — | 2001-03-06 |
| 6176801 | Locking device of electric tool shaft | — | 2001-01-23 |