David P. Smith
66Patents
13h-index
78Co-inventors
87Inventor score
Filing activity: Sep 14, 1981 → Apr 12, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6748738B2 | Hydraulic regeneration system | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US5868059A | Electrohydraulic valve arrangement | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6279482A | Countermeasure apparatus for deploying interceptor elements from a spin stabilized rocket | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US7444809B2 | Hydraulic regeneration system | Mechanical Engineering; Lighting; Heating | 30 | Active |
| US6681568B2 | Fluid system for two hydraulic circuits having a common source of pressurized fluid | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6179570A | Variable pump control for hydraulic fan drive | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5265331A | Method of manufacturing a piston for an axial piston fluid translating device | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5435131A | Adaptive overspeed control for a hydrostatic transmission | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5447029A | Hydrostatic transmission control system | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6769252B2 | Fluid system having variable pressure relief | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5358193A | Tape guide for a data cartridge | Physics | 14 | Expired |
| US4466564A | Belt for belt-driven recording tape pack | Physics | 13 | Expired |
| US5875631A | Control system for a hydrostatic transmission | Performing Operations; Transporting | 13 | Expired |
| US5682955A | Blade control system for an earthmoving blade | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6684636B2 | Electro-hydraulic pump control system | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6394431B1 | High force feel bumper with low final load | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6098481A | High force variable position detent mechanism | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5809841A | Variable position detent mechanism for a control lever | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5362009A | Drive belt corner guide roller with structured inner surface for a data cartridge | Physics | 10 | Expired |
| US6935114B2 | System and method for starting an engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5819866A | Active pitch control for a mobile machine | Performing Operations; Transporting | 8 | Expired |
| US7723979B2 | Integrated energy metering system | Emerging Cross-Sectional Technologies | 8 | Active |
| US5262800A | Thermal imaging system | Physics | 8 | Expired |
| US4581189A | Method of making a belt for belt-driven recording tape pack | Physics | 8 | Expired |
| US6699311B2 | Hydraulic quick drop circuit | Mechanical Engineering; Lighting; Heating | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.