Pole mounted revolving air circulating fan

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.

Description

BACKGROUND OF THE INVENTION1. Field of the InventionThe present invention relates to air circulating devices and more particularly pertains to a pole mounted revolving air circulating fans which may be adapted for inducing air movement within an air mass by use of a rotating impeller which simultaneously revolves around a vertical axis.2. Description of the Prior ArtThe use of air circulating devices is known in the prior art. More specifically, air circulating devices heretofore devised and utilized for the purpose of inducing air movement are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.The present invention is directed to improving devices for inducing air movement within an air mass in a manner which is safe, secure, economical and aesthetically pleasing.For example, U.S. Pat. ...

AI Technical Summary

Benefits of technology

A rotatable electrical contact assembly is mounted on the fan. The rotatable contact assembly comprises a contact housing integrally formed on the motor housing. The contact housing projects longitudinally rearwardly from the motor housing. The contact housing is a horizontally situated hollow, generally toroidal, structure with an open bottom radially connected to the motor housing. The contact housing is spaced below the rubber device wheel. An opening extends from inside the motor housing to inside the contact housing, the opening having the motor power supply leads passing therethrough. A rotary bushing, formed of rigid electrically insulating material, is fixedly coaxially mounted inside the contact housing. The bushing is also rotationally mounted on the exterior of the vertical support pole tube such that the bushing and attached fan may rotate freely about the support pole. The bushing has an integrally formed flat arm projecting radially outwardly therefrom. The arm is located inside the contact housing adjacent the opening to the motor housing. A pair of electrical wiper contacts, each having an electrical terminal connected thereto, is fixedly attached to the underside of the radial arm. The terminals extend upwardly, through the radial arm, to project slightly above the top of the radial arm. The terminals are each operatively connected to one of the motor power supply leads.

It is another object of the present invention to provide a new pole mounted revolving air circulating fan which may be easily and efficiently manufactured and marketed.

An even further object of the present invention is to provide a new pole mounted revolving air circulating fan which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such pole mounted revolving air circulating fans economically available to the buying public.

Still yet another object of the present invention is to provide a new pole mounted revolving air circulating fan that offers improved safety over similar fans because the moving parts and electrically energized components are mounted well above the floor.

Problems solved by technology

While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a 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.

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