Patent
   D821321
Priority
Sep 07 2016
Filed
Sep 07 2016
Issued
Jun 26 2018
Expiry
Jun 26 2033
Assg.orig
Entity
unknown
3
13
n/a
The ornamental design for a blade for a vertical windmill, as shown and described.

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.

Mizutani, Masatoshi, Kawai, Tomoya

Patent Priority Assignee Title
D850376, Jun 24 2016 AVOCET LLC Fluid turbine rotor blade
D850377, Jun 24 2016 AVOCET LLC Fluid turbine mixing rotor blade
D897290, Jan 16 2019 VESTAS WIND SYSTEMS A S Wind turbine blade tip
Patent Priority Assignee Title
9103321, Sep 13 2012 On or off grid vertical axis wind turbine and self contained rapid deployment autonomous battlefield robot recharging and forward operating base horizontal axis wind turbine
20070224029,
20080227378,
20150240788,
EM1302798,
GB4022954,
GB4024872,
JP1376682,
JP2011169267,
JP2011169292,
JP2016169711,
JP2016176369,
JP2016205204,
///
Executed onAssignorAssigneeConveyanceFrameReelDoc
May 19 2016KAWAI, TOMOYANTN CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0396900892 pdf
May 19 2016MIZUTANI, MASATOSHINTN CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0396900892 pdf
Sep 07 2016NTN Corporation(assignment on the face of the patent)
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule