David R. Shulver
21Patents
7h-index
16Co-inventors
66Inventor score
Filing activity: Sep 20, 2000 → Mar 5, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7997882B2 | Reduced rotor assembly diameter vane pump | Mechanical Engineering; Lighting; Heating | 47 | Active |
| US7794217B2 | Variable capacity vane pump with dual control chambers | Mechanical Engineering; Lighting; Heating | 23 | Active |
| US8047822B2 | Continuously variable displacement vane pump and system | Mechanical Engineering; Lighting; Heating | 15 | Active |
| US8057201B2 | Variable displacement vane pump with dual control chambers | Mechanical Engineering; Lighting; Heating | 15 | Active |
| US8202061B2 | Control system and method for pump output pressure control | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US8317486B2 | Variable capacity vane pump with dual control chambers | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US8444395B2 | Variable displacement variable pressure vane pump system | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US7832997B2 | Variable capacity gerotor pump | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US8079826B2 | Vane pump with substantially constant regulated output | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US7037088B2 | Dual balance shaft pump assembly | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6419469B1 | Pump having a main outlet communicating with a secondary outlet by a gap | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US8651825B2 | Variable capacity vane pump with dual control chambers | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8496445B2 | Control system and method for pump output pressure control | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8118575B2 | Variable displacement vane pump with enhanced discharge port | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8297943B2 | Pump control using overpressure source | Emerging Cross-Sectional Technologies | 2 | Active |
| US9181803B2 | Vane pump with multiple control chambers | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11859826B2 | Low profile termination cap for direct vent appliance | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9534597B2 | Vane pump with multiple control chambers | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US7866287B2 | Pump system and decoupler for supplying pressurized hydraulic fluid to a hydraulically actuated valvetrain | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10267310B2 | Variable pressure pump with hydraulic passage | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10739014B2 | System and method to cool an exposed surface of an appliance | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.