Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10267310 | Variable pressure pump with hydraulic passage | David R. Shulver, Hans-Jurgen Lauth | 2019-04-23 |
| 9651046 | Pre-compression dual spring pump control | Matthew Williamson, Manmohan Sehmby, Karthikeyan Ganesan | 2017-05-16 |
| 9534597 | Vane pump with multiple control chambers | Matthew Williamson, David R. Shulver | 2017-01-03 |
| 9181803 | Vane pump with multiple control chambers | Matthew Williamson, David R. Shulver | 2015-11-10 |
| 8444395 | Variable displacement variable pressure vane pump system | David R. Shulver | 2013-05-21 |
| 8118575 | Variable displacement vane pump with enhanced discharge port | Matthew Williamson, David R. Shulver | 2012-02-21 |
| 8079826 | Vane pump with substantially constant regulated output | David R. Shulver, Matthew Williamson | 2011-12-20 |
| 7614858 | Variable capacity vane pump with force reducing chamber on displacement ring | — | 2009-11-10 |