Abstract

Twisted leaf shaped ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 52, 54, 56, 60 and 64 diameter fans, and have less blades (3 for example) than conventional flat type bladed fans having 4, 5 blades and have greater air flow and less power draw results than the conventional flat 54 inch fans. Any of the novel twisted blades of 48, 52, 54, 56, 60 and 64 can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional leaf shaped blades.

Document Type

Patent

Patent Number

US 7,396,212

Application Serial Number

11/341,280

Issue Date

7-8-2008

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

Florida Solar Energy Center (FSEC)

Department

FSEC

Allowance Date

5-9-2008

Filing Date

1-27-2006

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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