The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 15, 2014

Filed:

Apr. 27, 2009
Applicants:

Lars Østergaard, Randers NV, DK;

Carsten Nørgård, Randers NV, DK;

Inventors:

Lars Østergaard, Randers NV, DK;

Carsten Nørgård, Randers NV, DK;

Assignee:

Grundfos Management a/s, Bjerringbro, DK;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 49/00 (2006.01); G01F 1/28 (2006.01); F04D 29/58 (2006.01);
U.S. Cl.
CPC ...
F04D 29/584 (2013.01); G01F 1/28 (2013.01); F04B 2205/05 (2013.01);
Abstract

The inventive rotational direction indicator for an electric motor having a cooling fan has a baffle element movable between two positions and which can be arranged on an electric motor with a cooling fan in such a way that the baffle element is positioned in an airstream of the cooling fan whose direction depends on the rotational direction of the electric motor. The baffle element is respectively moved into one of its two positions by the electric motor as a function of the direction of the airstream. The rotational direction indicator has a display unit designed to visually indicate the position of the baffle element and can be arranged on an outer side of the electric motor. The rotational direction indicator has a display actuating unit which connects the display unit and baffle element to one another, and transmits the position of the baffle element to the display unit.


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