Samuel C. Walker
37Patents
17h-index
24Co-inventors
81Inventor score
Filing activity: Dec 10, 1979 → Jul 8, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5213303A | Solenoid actuated valve with adjustable flow control | Performing Operations; Transporting | 93 | Expired |
| US4784325A | Rotating stream sprinkler | Emerging Cross-Sectional Technologies | 56 | Expired |
| US8074897B2 | Sprinkler with variable arc and flow rate | Performing Operations; Transporting | 50 | Active |
| US6942164B2 | Rotating stream sprinkler with turbine speed governor | Performing Operations; Transporting | 44 | Expired |
| US6234411A | Combined nozzle set and lift tool for a pop-up sprinkler | Emerging Cross-Sectional Technologies | 38 | Expired |
| US7703706B2 | Variable arc nozzle | Emerging Cross-Sectional Technologies | 37 | Active |
| US8272583B2 | Sprinkler with variable arc and flow rate and method | Performing Operations; Transporting | 29 | Active |
| US4637548A | Releasable locking assembly for sprinkler valve units | Performing Operations; Transporting | 25 | Expired |
| US8789768B2 | Sprinkler with variable arc and flow rate | Performing Operations; Transporting | 24 | Active |
| US9079202B2 | Rotary variable arc nozzle | Performing Operations; Transporting | 21 | Active |
| US9174227B2 | Irrigation sprinkler nozzle | Performing Operations; Transporting | 21 | Active |
| US8925837B2 | Sprinkler with variable arc and flow rate and method | Performing Operations; Transporting | 21 | Active |
| US9138768B2 | Pop-up irrigation device for use with low-pressure irrigation systems | Performing Operations; Transporting | 21 | Active |
| US6502764B2 | Pop-up sprinkler with internal debris cup | Performing Operations; Transporting | 19 | Expired |
| US8651400B2 | Variable arc nozzle | Performing Operations; Transporting | 19 | Active |
| US8672242B2 | Sprinkler with variable arc and flow rate and method | Performing Operations; Transporting | 19 | Active |
| US9314952B2 | Irrigation spray nozzle and mold assembly and method of forming nozzle | Performing Operations; Transporting | 17 | Active |
| US8740177B2 | Eccentric diaphragm valve | Mechanical Engineering; Lighting; Heating | 17 | Active |
| US9327297B2 | Rotary nozzle | Performing Operations; Transporting | 15 | Active |
| USD527791S1 | Sprinkler | General | 15 | Expired |
| US9295998B2 | Rotary nozzle | Performing Operations; Transporting | 13 | Active |
| US10322423B2 | Rotary nozzle | Performing Operations; Transporting | 13 | Active |
| US9440250B2 | Pop-up irrigation device for use with low-pressure irrigation systems | Performing Operations; Transporting | 12 | Active |
| US6296227A | Valve assembly with clamp on bonnet | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US9156043B2 | Arc adjustable rotary sprinkler with automatic matched precipitation | Performing Operations; Transporting | 11 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.