Pole mounted revolving air circulating fan

Fluid reaction surfaces (i.e. – impellers) – Sustained ancillary movement of rotary working member – Continuous rotation about plural axes

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Details

416108, 416244R, 454338, F04D 2936

Patent

active

054113725

ABSTRACT:
Disclosed is a new pole mounted revolving air circulating fan for inducing air movement within an air mass by use of a rotating impeller which simultaneously revolves around a vertical axis. The pole mounted revolving air circulating fan comprises a telescoping support pole extending substantially vertically upwardly from a mounting floor surface to a mounting ceiling surface, the ends of the support pole frictionally engaging the mounting surfaces. A fan, comprising a rotary air impeller coupled to an electric motor through a drive shaft, is revolvedly mounted on the vertical support pole. A generally cylindrical motor housing encloses the motor and the motor power supply leads. A blade guard, constructed of wire rods forming a substantially annularly shaped wire cage, encloses the impeller to prevent injury from contact therewith. The guard has a central hole through the back wherethrough the front end of the motor housing extends. The blade guard also has a bracket formed thereon adjacent the central hole whereby the blade guard is connected to the motor housing. A rotatable electrical contact assembly, having rotating wiper contacts cooperating with stationary ring contacts, allows power to be supplied to the fan motor while the fan is rotating around the vertical support pole. A manually actuated fan power switch, mounted on the support pole, completes or interrupts the electrical circuit to the fan motor thereby turning the device on or off. The fan is moved around the support pole with a rubber drive wheel coupled to the motor drive shaft, the drive wheel frictionally engaging a stationary rail which encircles the vertical support post whereby rotation of the drive wheel causes the fan to revolve around the post.

REFERENCES:
patent: 2213873 (1940-09-01), Van Derschaegh
patent: 2231620 (1941-02-01), Goldenberg
patent: 2830779 (1958-04-01), Wentling
patent: 3052400 (1962-09-01), Holpfer

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