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:
Oct. 03, 2000
Filed:
Jan. 28, 1999
Hiroyuki Shingai, Tokyo, JP;
Kabushiki Kaisha Copal, Tokyo, JP;
Abstract
An impeller includes a vane component integrally molded with a plurality of vanes having predetermined tilt angles that change continuously from a central portion of rotation, and a bottomed cylindrical component formed with a rotating shaft body, so that the vanes have an ideal shape with tilt angles that match the rotational peripheral velocity. For this purpose, the impeller of an axial fan serves as a rotor arranged to be rotatable with respect to a stator fixed to a main body of the axial fan. The impeller includes a bottomed cylindrical component formed by injection molding from a predetermined resin material such that a shaft body axially supported by a rotary bearing of the main body is formed at a central portion of rotation thereof, and a vane component formed by injection molding from a predetermined resin material such that a plurality of vanes are equidistantly formed thereon.