Elmer A. Richards
20Patents
11h-index
7Co-inventors
64Inventor score
Filing activity: Feb 21, 1975 → Jul 22, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4527447A | Automatic mechanical transmission system | Emerging Cross-Sectional Technologies | 79 | Expired |
| US4194410A | Blocked transmission | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4735109A | Semi-blocked transmission | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4046032A | Start control | Emerging Cross-Sectional Technologies | 24 | Expired |
| US3983979A | Sensor unblocking ramps | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4290515A | Transmission with resilient shifting mechanism | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4375172A | Blocked change gear transmission utilizing resilient shifting mechanisms and improved jaw clutch assembly therefor | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4388838A | Multiple countershaft simple transmission | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4186618A | Transmission input decelerating and reversing mechanism | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4132122A | Shiftable change speed transmission utilizing improved blocker and jaw clutch assembly | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4034620A | Gear retainer | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4481836A | Multiple identical countershaft powershift transmission | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4176736A | Blocked change gear transmission and improved blocker and jaw clutch assembly therefor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4736643A | Blocked jaw clutch assembly | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4703667A | Blocked jaw clutch assembly | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4141440A | Blocker and jaw clutch assembly | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4709590A | Herringbone geared multiple load sharing countershaft transmission | Emerging Cross-Sectional Technologies | 9 | Expired |
| USRE31296E | Transmission with resiliently loaded mainshaft gears | General | 4 | Expired |
| USRE29601E | Transmission with resiliently loaded mainshaft gears | General | 4 | Expired |
| USRE32591E | Automatic mechanical transmission system | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.