Daniel Schaefer
22Patents
12h-index
39Co-inventors
81Inventor score
Filing activity: Mar 11, 1976 → Mar 28, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7112910B2 | Brushless DC electric motor | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5094326A | Control linkage for hydrostatic transmission | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6388346B1 | Axial fluid flow inducing device with multiple magnetically driven impellers | Electricity | 35 | Expired |
| US6998751B2 | High reliability electric drive | Electricity | 26 | Expired |
| US4711073A | Clipping propulsion means for tractor mower | Human Necessities | 26 | Expired |
| US6923619B2 | Integrated blade cooler for electronic components | Electricity | 24 | Expired |
| US4068452A | Mower spindle and spindle drive belt braking arrangement for rotary mower having plurality of mower spindles | Human Necessities | 22 | Expired |
| US4433530A | Interlock mechanism preventing engine starting when a mower is in power drive | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4132280A | Reversibly mountable clutch control handle mounted on collapsible handle of walk-behind lawn mower | Human Necessities | 18 | Expired |
| US7167364B2 | Cooler with blower between two heatsinks | Electricity | 16 | Expired |
| US6940200B2 | Electric drive | Electricity | 14 | Expired |
| US4433868A | Cab for walk-behind tractor | Performing Operations; Transporting | 13 | Expired |
| US5570570A | Ride-on mower steering and suspension system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6698505B2 | Cooler for an electronic device | Electricity | 11 | Expired |
| US5474315A | Torsion bar rear suspension for ride-on mowers | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7150494B2 | Flat section of the outer skin of the bodywork of a motor vehicle | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6903928B2 | Integrated crossflow cooler for electronic components | Electricity | 8 | Expired |
| US4103478A | Mower support for rear mounted grass catcher | Human Necessities | 5 | Expired |
| US5803474A | Torsion bar rear suspension for ride-on mowers | Performing Operations; Transporting | 4 | Expired |
| US7586232B2 | Flat radially interacting electric drive and a method of the manufacturing the same | Electricity | 4 | Active |
| US7623013B2 | Electromagnetic moving system | Emerging Cross-Sectional Technologies | 4 | Active |
| US4396081A | Mechanism for indicating drive engaging force | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.