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.

Patent No.:

US 9677571 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 13, 2017

Filed:

Sep. 06, 2007
Applicant:

Andreas Pfannenberg, Hamburg, DE;

Inventor:

Andreas Pfannenberg, Hamburg, DE;

Assignee:

PFANNENBERG GMBH, Hamburg, DE;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 5/02 (2006.01); F04D 29/70 (2006.01); F04D 25/12 (2006.01); F04D 29/54 (2006.01);
U.S. Cl.
CPC ...
F04D 29/703 (2013.01); F04D 25/12 (2013.01); F04D 29/547 (2013.01);
Abstract

A filter fan, with a blower, for fitting in a mounting opening in a wall. The filter fan has a basic casing, a design cover. An aeration grid with lamellar elements is held on the opposed side walls of the design cover and a filter mat is placed between the basic casing and the fan grid. A grid element is placed on the air outlet side of the filter fan for the passage of air above an air outlet. The grid element has an ascending section and a planar section, whereby the ascending section changes into the planar section and a full surface section is provided on the planar section.


Find Patent Forward Citations

Pfannenberg, Andreas. (2017). Device for the passage of air (U.S. Patent No. 9677571). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9677571

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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