Deployable folded propeller assembly for aerial projectiles
US6308632A · kind A · utility
Inventor
Key dates
| Filing date | Nov 22, 1999 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Nov 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/36
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for deploying a propeller assembly from a folded configuration to a deployed, operational configuration, the apparatus comprising a propeller assembly hub which in conjunction with a propeller hub nut maintains an aerodynamically efficient shape after the propeller assembly is deployed, the propeller hub nut which is diametrically large enough to allow assembly of a drive shaft and a drive shaft bevel gear and includes a cavity to accept a spring detent, a propeller blade which protrudes from a journal located in the surface of the propeller assembly hub where when in its folded configuration, the propeller blade is in the same parallel axial direction as the drive shaft and when deployed is nutated to a radially outwardly extending operative position in response to rotating of a propeller blade bevel gear, the drive shaft rotated about its axis where one end engages a prime mover and a second distal end engages the hub nut, drive shaft bevel gear fixed to the drive shaft near the distal end which engages the propeller blade bevel gear, the propeller blade bevel gear connected to the propeller blade inside of the propeller assembly hub which engages the drive shaft bev…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.