Patrick R. Tisdale
28Patents
9h-index
59Co-inventors
78Inventor score
Filing activity: Jun 24, 1982 → Aug 10, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4427340A | Soft inplane bearingless helicopter rotor | Performing Operations; Transporting | 66 | Expired |
| US5358381A | Yoke for helicopter rotor systems | Performing Operations; Transporting | 26 | Expired |
| US7665969B2 | Assembly for providing flexure to blade system | Performing Operations; Transporting | 23 | Expired |
| US8038539B2 | Constant-velocity joint with torque-combining differential | Emerging Cross-Sectional Technologies | 21 | Active |
| US7845909B2 | Assembly for providing flexure to blade system | Performing Operations; Transporting | 13 | Active |
| US8926281B2 | Compact rotorcraft dual-element spherical elastomeric centrifugal-force bearing assembly | Performing Operations; Transporting | 12 | Active |
| US8444382B2 | Rotor hub for use with high-inertia blades | Performing Operations; Transporting | 12 | Active |
| US9126680B2 | Dual mode rotor hub assembly | Emerging Cross-Sectional Technologies | 12 | Active |
| US6708921B2 | Composite flapping flexure | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8360727B2 | Yoke and bearing fitting assembly for rotors | Performing Operations; Transporting | 9 | Active |
| US8956117B2 | Stiff-in-plane rotor configuration | Performing Operations; Transporting | 8 | Active |
| US8287237B2 | Step-over blade-pitch control system | Performing Operations; Transporting | 7 | Active |
| US8985951B2 | Multiple-yoke main rotor assembly | Performing Operations; Transporting | 7 | Active |
| US6375426B1 | Protective edge members for composite flexures | Emerging Cross-Sectional Technologies | 7 | Expired |
| US9505489B2 | Flexing clevis arrangement bolted joint attachment for flexible rotor hub with high offset and high flapping | Emerging Cross-Sectional Technologies | 6 | Active |
| US9505490B2 | Composite rotor system using two race track style cantilevered yokes | Performing Operations; Transporting | 3 | Active |
| US7867096B2 | Joint for tiltrotor hubs | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10059438B2 | Hub assembly with grease lubricated roller bearing and tension-torsion strap | Performing Operations; Transporting | 2 | Active |
| US8047466B2 | Yoke with notched arm roots | Performing Operations; Transporting | 2 | Active |
| US10086934B2 | Composite rotor system using two race track style cantilevered yokes | Performing Operations; Transporting | 1 | Active |
| US9156237B2 | Attachable elastomeric pad | Emerging Cross-Sectional Technologies | 1 | Active |
| US10569867B2 | Composite rotor system using two race track style cantilevered yokes | Performing Operations; Transporting | 1 | Active |
| US9352830B2 | Aircraft rotor with discrete flap hinge | Performing Operations; Transporting | 1 | Active |
| US10059064B2 | Fiber orientation to allow for automated ply placement with composite rotor yokes | Emerging Cross-Sectional Technologies | 0 | Active |
| US9878782B2 | Stiff-in-plane rotor configuration | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.