Shulver; David R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Shulver; David R..The latest application filed is for "variable pressure pump with hydraulic passage".
- Shulver; David R. - Richmond Hill CA
- Shulver; David R. - Ontario CA
- Shulver; David R. - Toronto CA
- Shulver; David R. - Richmon Hill CA
| Patent | Date |
|---|---|
| Variable pressure pump with hydraulic passage Grant 10,267,310 - Tanasuca , et al. | 2019-04-23 |
| Variable Pressure Pump With Hydraulic Passage App 20170184096 - TANASUCA; Cezar ; et al. | 2017-06-29 |
| Vane pump with multiple control chambers Grant 9,534,597 - Williamson , et al. January 3, 2 | 2017-01-03 |
| Vane Pump With Multiple Control Chambers App 20150369240 - WILLIAMSON; Matthew ; et al. | 2015-12-24 |
| Vane pump with multiple control chambers Grant 9,181,803 - Williamson , et al. November 10, 2 | 2015-11-10 |
| Variable capacity vane pump with dual control chambers Grant 8,651,825 - Williamson , et al. February 18, 2 | 2014-02-18 |
| Variable Displacement Variable Pressure Vane Pump System App 20130251570 - Tanasuca; Cezar ; et al. | 2013-09-26 |
| Vane Pump with Multiple Control Chambers App 20130195705 - Williamson; Matthew ; et al. | 2013-08-01 |
| Control system and method for pump output pressure control Grant 8,496,445 - Shulver , et al. July 30, 2 | 2013-07-30 |
| Variable displacement variable pressure vane pump system Grant 8,444,395 - Tanasuca , et al. May 21, 2 | 2013-05-21 |
| Variable Capacity Vane Pump with Dual Control Chambers App 20130089446 - WILLIAMSON; Matthew ; et al. | 2013-04-11 |
| Variable capacity vane pump with dual control chambers Grant 8,317,486 - Williamson , et al. November 27, 2 | 2012-11-27 |
| Pump control using overpressure source Grant 8,297,943 - Shulver , et al. October 30, 2 | 2012-10-30 |
| Control System and Method for Pump Output Pressure Control App 20120251342 - Shulver; David R. ; et al. | 2012-10-04 |
| Control system and method for pump output pressure control Grant 8,202,061 - Shulver , et al. June 19, 2 | 2012-06-19 |
| Variable displacement vane pump with enhanced discharge port Grant 8,118,575 - Williamson , et al. February 21, 2 | 2012-02-21 |
| Vane pump with substantially constant regulated output Grant 8,079,826 - Shulver , et al. December 20, 2 | 2011-12-20 |
| Variable displacement vane pump with dual control chambers Grant 8,057,201 - Shulver , et al. November 15, 2 | 2011-11-15 |
| Continuously variable displacement vane pump and system Grant 8,047,822 - Shulver , et al. November 1, 2 | 2011-11-01 |
| Reduced rotor assembly diameter vane pump Grant 7,997,882 - Shulver , et al. August 16, 2 | 2011-08-16 |
| Pump system and decoupler for supplying pressurized hydraulic fluid to a hydraulically actuated valvetrain Grant 7,866,287 - Shulver , et al. January 11, 2 | 2011-01-11 |
| Variable Capacity Vane Pump with Dual Control Chambers App 20100329912 - Williamson; Matthew ; et al. | 2010-12-30 |
| Variable capacity gerotor pump Grant 7,832,997 - Williamson , et al. November 16, 2 | 2010-11-16 |
| Variable capacity vane pump with dual control chambers Grant 7,794,217 - Williamson , et al. September 14, 2 | 2010-09-14 |
| Variable Displacement Variable Pressure Vane Pump System App 20100221126 - Tanasuca; Cezar ; et al. | 2010-09-02 |
| Control System and Method For Pump Output Pressure Control App 20100028171 - Shulver; David R. ; et al. | 2010-02-04 |
| Variable Displacement Vane Pump With Enhanced Discharge Port App 20090269232 - Williamson; Matthew ; et al. | 2009-10-29 |
| Continuously Variable Displacement Vane Pump And System App 20090202375 - Shulver; David R. ; et al. | 2009-08-13 |
| Variable Displacement Vane Pump With Dual Control Chambers App 20090196780 - Shulver; David R. ; et al. | 2009-08-06 |
| Reduced Rotor Assembly Diameter Vane Pump App 20090053088 - Shulver; David R. ; et al. | 2009-02-26 |
| Variable Capacity Vane Pump With Dual Control Chambers App 20090022612 - Williamson; Matthew ; et al. | 2009-01-22 |
| Dynamic Balancer With Speed-related Control Mechanism App 20090016907 - Williamson; Matthew ; et al. | 2009-01-15 |
| Pump System and Decoupler for Supplying Pressurized Hydraulic Fluid to a Hydraulically Actuated Valvetrain App 20080216778 - Williamson; Matthew ; et al. | 2008-09-11 |
| Vane Pump With Substantially Constant Regulated Output App 20080175724 - Shulver; David R. ; et al. | 2008-07-24 |
| Variable Capacity Gerotor Pump App 20080166251 - Williamson; Matthew ; et al. | 2008-07-10 |
| Pump Control Using Overpressure Source App 20080107554 - SHULVER; David R. ; et al. | 2008-05-08 |
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