Electric fan for patio umbrella
First Claim
1. An electric fan drive mountable on and about a unitary support shaft comprising:
- a rotatable drive ring wherein said support shaft is positioned substantially perpendicular to and extending through said drive ring;
support means positioned on the outer surface of said unitary support shaft for rotatably supporting said drive ring;
an electric motor fixedly positioned adjacent said support shaft, said motor having at least one rotatable motor shaft extending from said motor; and
drive means coupling said motor shaft to said drive ring and adapted to transfer rotary motion from said motor shaft to said drive ring.
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Accused Products
Abstract
An electric fan is provided for mounting on and about a shaft, including the shaft of a patio umbrella. A rotatable drive ring wherein the shaft is positionable perpendicular to and extending through the drive ring is rotated by an electric motor fixedly positionable adjacent the shaft. A gear or belt drive system preferably couples the rotatable motor shaft to the drive ring and a support system, preferably including a plurality of bearings, supports the drive ring and fan assembly. A support brace and collar are provided to attach to the shaft and support the support system. The electric fan provided is mountable to a patio umbrella or other shaft even after construction of the umbrella or other shaft.
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Citations
22 Claims
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1. An electric fan drive mountable on and about a unitary support shaft comprising:
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a rotatable drive ring wherein said support shaft is positioned substantially perpendicular to and extending through said drive ring; support means positioned on the outer surface of said unitary support shaft for rotatably supporting said drive ring; an electric motor fixedly positioned adjacent said support shaft, said motor having at least one rotatable motor shaft extending from said motor; and drive means coupling said motor shaft to said drive ring and adapted to transfer rotary motion from said motor shaft to said drive ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electric fan drive mountable on and about a support shaft comprising:
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a rotatable drive ring having a slot extending through said drive ring wherein said shaft is positioned substantially perpendicular to and extending through said drive ring and said slot being of sufficient size a to allow said support shaft to be positioned centrally within said drive ring; support means for rotatably supporting said drive ring, said support means including bearings positioned between said support means and said drive ring wherein said bearings rotatably support said drive ring; an electric motor housing including an electric motor and a gearbox and having at least two rotatable motor shafts extending from said motor housing being fixedly positioned adjacent said support shaft; a drive gear having a slot and being attached to said drive ring wherein said drive gear slot being sized and positioned to coincide with said drive ring slot; said motor shafts each including a motor gear; and said motor shafts being positioned such that at least one of said motor gears interengages said drive gear throughout rotation of said drive ring. - View Dependent Claims (19, 20)
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21. An electric fan drive mountable around a support shaft comprising:
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a rotatable drive ring positioned around and substantially perpendicular to said support shaft, said drive ring having a slot extending through said drive ring, said slot being of sufficient size as to allow said support shaft to be positioned centrally within said drive ring; support means for rotatably supporting said drive ring; an electric motor assembly fixedly positioned adjacent said support shaft for generating rotary motion; a drive gear attached to said drive ring and including a slot being sized and positioned to coincide with said drive ring slot; and a gear assembly connected to said motor assembly and adapted to interengage with said drive gear throughout rotation of said drive ring for communicating rotary motion from said motor assembly to said drive ring.
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22. An electric fan drive mountable on and about a unitary support shaft comprising:
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a rotatable drive ring having a slot extending through said drive ring wherein said support shaft is positioned substantially perpendicular to and extending through said drive ring and said slot being of sufficient size to allow said shaft to be positioned centrally within said drive ring; support means for rotatably supporting said drive ring; an electric motor fixedly positioned adjacent said support shaft, said motor having at least one rotatable motor shaft extending from said motor; and drive means coupling said motor shaft to said drive ring and adapted to transfer rotary motion from said motor shaft to said drive ring.
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Specification