Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12231010 | Methods and apparatus to control engine speed of a power system | Richard Joyce | 2025-02-18 |
| 11848592 | Methods and apparatus to control engine speed of a power system | Richard Joyce | 2023-12-19 |
| 11420284 | Engine driven power supplies with output reduction | Richard Joyce | 2022-08-23 |
| 11097370 | Methods and apparatus to control an output of a switched mode power supply in a service pack | Richard Joyce | 2021-08-24 |
| 11075581 | Methods and apparatus to use a switched-mode power supply as a source of power in a service pack | Nathan Joe Jochman | 2021-07-27 |
| 10688583 | Welding power supplies having adjustable current ramping rates | Cody J. Bowman | 2020-06-23 |
| 10384290 | Engine driven power supplies with output reduction | Richard Joyce | 2019-08-20 |
| 9086049 | Power generating equipment | Paul Vigars, Daniel Haworth, Christopher Huxley-Reynard | 2015-07-21 |
| 7312419 | Engine driven converter with feedback control | Richard Beeson, Stephen Li | 2007-12-25 |
| 7112945 | Engine driven converter with feedback control | Richard Beeson, Stephen Li | 2006-09-26 |
| 6963216 | Method and apparatus for detecting shorted rectifying control elements of an engine driven power source for welding-type system | — | 2005-11-08 |
| 6894401 | Engine driven inverter welding power supply | Richard Beeson, Stephen Li | 2005-05-17 |
| 6674179 | Engine driven inverter welding power supply | Richard Beeson, Stephen Li | 2004-01-06 |
| 6531685 | Separate exciter windings for weld and auxiliary power | — | 2003-03-11 |
| 6469276 | Control of weld and auxiliary power output of a generator type welding power supply | Ross Renner, Rob Williams | 2002-10-22 |
| 6469401 | Engine driven welding power supply with inverter auxiliary power | Richard Beeson, Stephen Li | 2002-10-22 |
| 6310321 | Engine driven inverter welding power supply | Richard Beeson, Stephen Li | 2001-10-30 |
| 6153855 | Control of weld and auxiliary power output of a generator type welding power supply | Ross Renner, Rob Williams | 2000-11-28 |
| 6111217 | Engine driven inverter welding power supply | Richard Beeson, Stephen Li | 2000-08-29 |
| 6005220 | Method and apparatus for electronically controlling the output of an engine driven generator welding power supply | Thomas A. Bunker | 1999-12-21 |
| 5968385 | Engine driven inverter welding power supply | Richard Beeson, Stephen Li | 1999-10-19 |
| 5734147 | Method and apparatus for electronically controlling the output of an engine driven generator welding power supply | Thomas A. Bunker | 1998-03-31 |