Patent ID: 11866163
Assignee: PIASECKI AIRCRAFT CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. The parking tail rotor apparatus of claim 4 wherein, the one or more rotor blades comprising a first blade and a second blade, the first and second blades being located axially adjacent one to another, the first and second blades having a configuration rotate in radial opposition when the source of motive power rotates the first and second blades, the configuration to rotate in radial opposition comprising: a common driveshaft attached for selectable rotation to the source of motive power, the first and second blades being configured for rotation by the common drive shaft, the common driveshaft having an axis of rotation, the first blade being rotatable with respect to the common driveshaft and the second blade about the axis of rotation, the common drive shaft having a first boss, the first boss engaging the first blade to rotate the first blade when the source of motive power is rotating the common drive shaft, the first boss not engaging the first blade when the source of motive power is not rotating the common drive shaft.