US2002122724A1PendingUtilityA1
Combination fan blade unit for electric fan
Priority: Jan 16, 2001Filed: Jan 16, 2001Published: Sep 5, 2002
Est. expiryJan 16, 2021(expired)· nominal 20-yr term from priority
Inventors:Yung-Chang Tseng
F04D 25/0613F04D 29/325
34
PatentIndex Score
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Claims
Abstract
A combination fan blade unit includes a fan hub defining an installation chamber and an axle hole in the installation chamber, a plurality of blower blades radially equiangularly arranged on the top sidewall of the fan hub, and a plurality of axial-flow blades radially equiangularly arranged around the peripheral wall of the fan hub.
Claims
exact text as granted — not AI-modifiedWhat the invention claimed is:
1 . A combination fan blade unit comprising a fan hub, said fan hub comprising a circular top wall, and a peripheral wall extended from the border of said circular top wall and defining with said circular top wall an installation chamber and an axle hole in said installation chamber, a plurality of blower blades radially equiangularly arranged on said circular top wall, and a plurality of axial-flow blades radially equiangularly arranged around said peripheral wall of said fan hub.
2 . A combination fan blade unit comprising a fan hub, said fan hub comprising a circular top wall, and a peripheral wall extended from the border of said circular top wall and defining with said circular top wall an installation chamber and an axle hole in said installation chamber, and two sets of axial-flow blades alternatively arranged around said peripheral wall of said fan hub at different elevations.
3 . The combination fan blade unit of claim 2 further comprising a plurality of blower blades radially equiangularly arranged on said circular top wall.Join the waitlist — get patent alerts
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