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:
Jul. 27, 2004
Filed:
Jan. 23, 2002
Yukinobu Yumita, Shimosuwa-machi, JP;
Sankyo Seiki Mfg. Co., Ltd., Nagano, JP;
Abstract
According to the small hydroelectric power generator of the present invention, each of the outer peripheral portions of the hydraulic turbine which oppose to the ejecting openings are made in an edge shape. Therefore, the ejecting openings will not be blocked by the outer peripheral portions of the hydraulic turbine, keeping the hydraulic pressure constant. Also, since the water is constantly ejected from the ejecting openings at a plurality of locations, the hydraulic turbine rotates smoothly, reducing the rotational noise. Furthermore, the hydraulic pressure and the current are kept constant and in turn the vibration noise from the case and the current noise are reduced. Moreover, the square corners and the edges are eliminated from the back planes of the blade members to give an R-like round shape; therefore, a reverse torque is prevented from occurring to smoothen the current and in turn to reduce the noise.