Patent · US Active

Ventilator

US8668435B2 · kind B2 · utility

7Cited by

9References

23Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Norbert Weisser · Niedereschach, DE
Marcel Paffendorf · Niedereschach, DE
Wolfgang Laufer · Schenkenzell, DE
Jürgen Herr · St. Georgen, DE
Stefan Mayer · Glückstadt, DE

Key dates

Filing date	Dec 7, 2009
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Nov 29, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D25/14
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fan (100) has a fan housing (110). The latter has an air entrance opening (120) and an air exit opening (130). It further has a swivel joint arrangement (180) having at least one swivel joint (145, 147, 155, 157, 165, 167, 175, 177) that is arranged on a joint carrier (188; 188′); at least one non-return flap (140, 150, 160, 170) that is journaled rotatably by means of the at least one swivel joint (145, 147, 155, 157, 165, 167, 175, 177) and, in its closed position, at least partly closes off the air exit opening (130); and at least one elastic return member (142, 152, 162, 172) that is associated with the at least one non-return flap (140, 150, 160, 170) and urges it toward its closed position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.