William T. Beale
35Patents
16h-index
15Co-inventors
78Inventor score
Filing activity: Jun 7, 1974 → May 23, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5525845A | Fluid bearing with compliant linkage for centering reciprocating bodies | Electricity | 83 | Expired |
| US5775273A | Free piston internal combustion engine | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6170442A | Free piston internal combustion engine | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4183214A | Spring and resonant system for free-piston Stirling engines | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US6035637A | Free-piston internal combustion engine | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5148066A | Linear generator or motor with integral magnetic spring | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5537820A | Free piston end position limiter | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4623808A | Electromechanical transducer particularly suitable for a linear alternator driven by a free-piston Stirling engine | Electricity | 28 | Expired |
| US6684637B2 | Parallel slot heat exchanger | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5502968A | Free piston stirling machine having a controllably switchable work transmitting linkage between displacer and piston | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4036018A | Self-starting, free piston Stirling engine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5461859A | Centering system with one way valve for free piston machine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4738105A | Compact crank drive mechanism with guided pistons | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4802332A | Sliding surface lubrication particularly advantageous for a free piston stirling engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4945726A | Leaky gas spring valve for preventing piston overstroke in a free piston stirling engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4404802A | Center-porting and bearing system for free-piston stirling engines | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| USRE30176E | Stirling cycle type thermal device | General | 16 | Expired |
| US3937018A | Power piston actuated displacer piston driving means for free-piston stirling cycle type engine | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4888951A | Phase synchronization and vibration cancellation for free piston Stirling machines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5385021A | Free piston stirling machine having variable spring between displacer and piston for power control and stroke limiting | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US8857173B2 | Two piston, concentric cylinder, alpha free piston Stirling machine | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US4412418A | Hydrodynamic lubrication system for piston devices particularly Stirling engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4429530A | Hermetically sealed transmission system for a free piston Stirling engine | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4458495A | Pressure modulation system for load matching and stroke limitation of Stirling cycle apparatus | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5873246A | Centering system for free piston machine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.