Invention Grant
- Patent Title: Wind powered apparatus having counter rotating blades
- Patent Title (中): 具有反转叶片的风力发电设备
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Application No.: US13123521Application Date: 2009-10-09
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Publication No.: US08354759B2Publication Date: 2013-01-15
- Inventor: Harold Marchand
- Applicant: Harold Marchand
- Applicant Address: CA Sarnia
- Assignee: Biro Air Energy Inc.
- Current Assignee: Biro Air Energy Inc.
- Current Assignee Address: CA Sarnia
- Agency: Brunet & Co. Ltd.
- Agent Robert A. H. Brunet
- International Application: PCT/CA2009/001444 WO 20091009
- International Announcement: WO2010/040229 WO 20100415
- Main IPC: H02K9/04
- IPC: H02K9/04

Abstract:
A wind powered apparatus (or wind turbine) having two sets of counter rotating blades. Both sets of blades are connected to an alternator and are operable to rotate the stator and rotor thereof in opposite directions relative to one another, thereby doubling their relative speed. The apparatus is equipped with a conical front nose piece having a blunt tip that co-operates with the first and second sets of blades to improve performance of the apparatus by affecting its orientation and the rotational speed of the blades.
Public/Granted literature
- US20110272951A1 WIND POWERED APPARATUS HAVING COUNTER ROTATING BLADES Public/Granted day:2011-11-10
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