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:
Sep. 01, 1998
Filed:
Jul. 15, 1996
Urs Bodmer, Ennetbaden, CH;
Vishal Mallick, Birmenstorf, CH;
ABB Research Ltd., Zurich, CH;
Abstract
This fan is provided with an impeller (1), having a hub (2), and with a casing surrounding the impeller (1). The impeller (1) has individual flow segments (4) connected to the hub (2) and to one another and in each case enclosing a flow duct (5), and a shaft connected to the hub (2) and extending along an axis (3). The object is to provide a fan which has an impeller which can be easily produced from a plastic and is suitable for comparatively high operating speeds. This is achieved by the flow segments (4) being connected with a form fit to the hub (2), and by the fastening of the flow segments (4) being reinforced by means of at least one shrouding (13, 14) of a prefabricated thermoplastic strip reinforced with continuous fibers, the thermoplastic strip having been briefly heated and fused with the layer respectively applied previously during the winding of the shrouding (13, 14).