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. 20, 2025
Filed:
Aug. 13, 2024
Grandvance Technology, Inc., Taoyuan, TW;
Che-Wei Lee, Taoyuan, TW;
GRANDVANCE TECHNOLOGY, INC., Taoyuan, TW;
Abstract
A viscous flow blower includes a housing including an inlet, an outlet, a motor, and an internal space; a seat secured to the housing and including N supporting projections and an axis of rotation. N is an integer equal to or greater than five. The connection member is coaxial with the axis of rotation. The motor is operatively connected to the seat so that the seat can be rotated by activating the motor. Annular blades are stacked on the seat. The blade includes a plurality of through holes with the supporting projections inserted through and secured thereto respectively. The N supporting projections are spaced from the axis of rotation by a predetermine distance. There are N angles formed by the supporting projections. The N angles all have different degrees. It can reduce suddenly sharp increases in amplitude of noise at certain frequencies.