David A. Ostergaard
15Patents
6h-index
12Co-inventors
59Inventor score
Filing activity: Jun 16, 1989 → Dec 12, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6347708B1 | Wheel case for a vibratory apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5803382A | Gyratory crusher having corrugation-like-seal | Performing Operations; Transporting | 13 | Expired |
| US5971306A | Gyratory crusher having tramp iron relief system with an annular hydraulic manifold | Performing Operations; Transporting | 11 | Expired |
| US5944265A | Gyratory crusher having self-contained lubrication system | Performing Operations; Transporting | 10 | Expired |
| US5005772A | Impeller bar installation and repositioning means for impact crushers having open type rotors | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6918492B2 | Baffle assembly for a sealed shaft on a vibratory apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6161650A | Lubricating system for a vibratory apparatus | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4925114A | "Impeller bar installation and repositioning means for impact crushers having ""open"" type rotors" | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5111569A | Method of locking an impeller bar against a seat | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6155507A | Device for securing the stationary jaw of a jaw crusher | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5004169A | Impeller bar assembly with adjustable locking mechanism | Performing Operations; Transporting | 5 | Expired |
| US6641068B2 | Jaw for a jaw crusher | Performing Operations; Transporting | 4 | Expired |
| US5875981A | Gyratory crusher having tramp iron relief system | Performing Operations; Transporting | 4 | Expired |
| US6126101A | Double wedge key plates for a jaw crusher | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5799886A | Gyratory crusher having thermal relief system | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.