Stephen J. Hoff
19Patents
12h-index
—Co-inventors
61Inventor score
Filing activity: May 27, 1975 → Mar 5, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4188719A | Lawn trimmer chain saw attachment | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US4226021A | Shaft assembly for lawn trimmer | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4035994A | Lawn mower blade control apparatus | Human Necessities | 32 | Expired |
| US4148141A | Lawn trimmer cutter head | Human Necessities | 27 | Expired |
| US4102214A | Variable-speed pulley and clutch | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4316355A | Combined flywheel and clutch mechanism for lawn mower blade | Human Necessities | 21 | Expired |
| US4416107A | Lawn mower blade control mechanism | Human Necessities | 18 | Expired |
| US4126928A | Method of making a shaft assembly | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5048616A | Garden tiller tine assembly | Human Necessities | 17 | Expired |
| US4148173A | Lawn mower blade control apparatus | Human Necessities | 13 | Expired |
| US4326368A | Clutch and brake for rotary lawn mower | Human Necessities | 12 | Expired |
| US4335585A | Lawn trimmer construction | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4633978A | Brake caliper includes mechanical actuator with camming device and manual wear compensator | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4277936A | Combined flywheel and clutch driver, and control and warning device | Human Necessities | 11 | Expired |
| US4152881A | Lawn mower blade rotation warning device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4088210A | Clutches with brake for implements | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4221284A | Clutch and brake assembly for implement drive | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4428184A | Safety mounting for lawn mower blade | Human Necessities | 3 | Expired |
| US4297829A | Lawn mower blade rotation warning device | Human Necessities | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.