Title:
Blade for a vertical windmill
Document Type and Number:
United States Patent D821321

Inventors:
Kawai, Tomoya (Kuwana, JP)
Mizutani, Masatoshi (Kuwana, JP)
Application Number:
29/576824
Publication Date:
06/26/2018
Filing Date:
09/07/2016
View Patent Images:
Assignee:
NTN CORPORATION (Osaka, JP)
Primary Class:
International Classes:
(IPC1-7): 1302
Field of Search:
D13/110, D13/115, D13/101, D13/118, D13/199, D15/1, D15/199, 452/64, 416/61
Foreign References:
EM0001302798November, 2011
GB4022954March, 2012
GB4024872May, 2013
JPD1376682December, 2009
JP2011169267September, 2011VERTICAL AXIS WIND TURBINE
JP2011169292September, 2011VERTICAL AXIS WIND TURBINE WITH LONG BLADE
JP2016169711September, 2016The windmill and aerogenerator for wind power generation
JP0201617636October, 2016
JP2016205204December, 2016Windmill wings
Other References:
Vertical Turbine Design posted by Renews posted date May 28, 2015, © ReNews, [online], http://renews.biz/89256/siemens-brings-new-turbine-design-to-life/ (Year: 2015).
NTN Exhibit posted by NTN posted date Feb. 25, 2016, © NTN Global, [online], http://www.ntnglobal.com/en/news/event/event201600012.html (Year: 2016).
Aquilero Wind Turbine posted by Aquilero posted date unknown, © Aquilero, [online], http://www.aquilero.com/en/ (Year: 2017).
Primary Examiner:
Ramirez, Cynthia
Assistant Examiner:
Yu, Laura H.
Attorney, Agent or Firm:
STAAS & HALSEY LLP (SUITE 700 1201 NEW YORK AVENUE, N.W. WASHINGTON DC 20005)
Claims:
CLAIM

1. The ornamental design for a blade for a vertical windmill, as shown and described.

Description:

FIG. 1 is a front elevational view of a blade for a vertical windmill showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a cross sectional view taken along line 6-6 in FIG. 1; and,

FIG. 7 is a front left perspective view thereof.

The partial design of the present invention is the portion delimited by the single-dot chain lines shown in FIGS. 1 to 4 and 7.

The broken lines in FIGS. 1 to 4 and 7, showing portions of the blade for a vertical windmill, form no part of the claimed design.