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.:
Date of Patent:
May. 08, 1984
Filed:
Dec. 28, 1982
Rudiger Galtz, Munich, DE;
Rudolf Reinhardt, Krailling, DE;
Webasto-Werk W. Baier GmbH & Co., Gauting, DE;
Abstract
A lateral-duct fan having a lateral duct approximately of the shape of a torus cut normally to its axis of symmetry, and having a coaxial impeller having axially-symmetrically lined-up blades at its front side in a ring-shaped recess that faces essentially opposite the lateral duct with an axial gap therebetween. In order to reduce the critical interdependence between the size of the axial gap and the output of the fan, and thus increase the tolerances during the adjustment of the axial gap, i.e., to improve the output values of the fan with the same axial gap, it is provided that the radius of at least one edge of the recess, measured at the front side of the impeller, is smaller than the radius of a closest edge of the lateral duct, measured at an inner surface of a housing in which the lateral duct is formed.