Blade arm

Details Blade arm Blade arm

2011-08-16

2011-08-16

Edgar, Richard (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Radially extensible or retractible rotor working member

Having pitch adjustment

C416S21000A

Reexamination Certificate

active

07997864

ABSTRACT:
A user adjustable variable axial length and variable pitch ceiling fan blade arm. The blade arm includes a pair of extension elements. Each element is threadably engaged with each other. At the other end of the extension elements are custom flanges for the purpose of attaching a fan blade and connecting the blade arm to a ceiling fan motor. The user can adjust the axial length and radial pitch of the blade arm by screwing in or out a threaded connection between the extension elements, and once the desired length and pitch is selected, the connection is secured by a connector, such as a hand and/or tool adjustable threaded lock.

REFERENCES:
patent: 163628 (1875-05-01), Bender

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