Fluid reaction surfaces (i.e. – impellers) – Combined or convertible – Hub lubrication or seal
Reexamination Certificate
2010-07-22
2011-10-11
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Combined or convertible
Hub lubrication or seal
C416S062000
Reexamination Certificate
active
08033791
ABSTRACT:
The subject of the present invention is to provide a blade end portion protecting bag which is fit onto an end portion of a plurality of blades for protecting the blade end portion from damage when the plurality of the blades are hoisted with a rotor head to the position of an upper nacelle in assembling a wind turbine, the protecting bag having such structure that a rope joint for connecting a control rope is hard to break and therefore the durability of the rope joint portion is improved; and a rotor installing method for installing the rotor to the nacelle with the protecting bag fit onto the blade. A blade end portion protecting bag which is fit onto an end portion of a plurality of blades in installing the blades8to the nacelle supported on the top of a tower2, the protecting bag comprising an end bag10fit onto the end portion of at least one of a plurality of the blades8to cover the same in a predetermined length from the end of the blade, at least two belt-like members11ato11edisposed to radiate from a center portion P and fixed to the outer surface of the end bag10in its circumference, wherein the belt-like members are bunched up at the center portion, and a control rope is connected to the belt-like members at center portion P.
REFERENCES:
patent: 7708523 (2010-05-01), Sakaue
patent: 2008/0216301 (2008-09-01), Hansen et al.
patent: 2009/0025219 (2009-01-01), Hansen et al.
patent: 2009/0282776 (2009-11-01), Berg
patent: 2005-320919 (2005-11-01), None
patent: 2006-21898 (2006-01-01), None
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patent: 03/100249 (2003-12-01), None
International Search Report of Application No. PCT/JP2010/059207 mailed Aug. 17, 2010.
Kanesaka Berner and Partners LLP
Look Edward
Mitsubishi Heavy Industries Ltd.
White Dwayne J
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