Patent ID: 7997864

Claim:
An adjustable blade arm for connecting a fan blade to a motor, said blade arm comprising: a) first and second extension elements extending generally along an axial direction, said pair of extension elements being adjustably connected to one another via a threaded engagement, at least one of said extension elements capable of having its length axially adjusted; b) a connector for said extension elements, said connector adjustable in an axial direction relative to said first and second extension elements, said connector having an interior threaded portion and exterior surfaces for receiving both hand grip and tool for adjustment, said exterior surfaces having an axial length greater than said interior threaded portion, at least one of said extension elements extending radially through said connector for providing a user tool adjustable friction fit with said threaded engagement, whereby the connector secures a user selected length of said blade arm in said axial direction and a user selected radial orientation of said fan blade relative to said axial direction.