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:
Dec. 03, 2013
Filed:
Mar. 18, 2010
Huan-jan Chien, Lujhu Township, Taoyuan County, TW;
Ching-chang Wang, Lujhu Township, Taoyuan County, TW;
Chih-kuan Shih, Lujhu Township, Taoyuan County, TW;
Huan-Jan Chien, Lujhu Township, Taoyuan County, TW;
Ching-Chang Wang, Lujhu Township, Taoyuan County, TW;
Chih-Kuan Shih, Lujhu Township, Taoyuan County, TW;
Assoma Inc., Taoyuan County, TW;
Abstract
The present invention discloses structure improvement of a canned motor pump, and more particular to a canned motor pump which is a plastic pump or a pump with plastic lining to transfer chemical liquids, wherein a support structure of a rotor system is improved to provide a high-rigidity cantilever stationary shaft to satisfy all kinds of requirements. The high-rigidity cantilever stationary shaft of the present invention comprises a metal shaft, which is locked tightly at a motor rear casing with a nut to compress a ceramic shaft sleeve and the motor rear casing to form a complex cantilever stationary shaft; a ceramic shaft sleeve, which provides hydraulic bearing and an axial thrust bearing functions; a motor rear casing, which enhances the stiffness of the stationary shaft for supporting rotation of the motor rotor; a containment shell, which provides a sealing function to the ceramic sleeve, in addition, the containment shell is provided with a central hole allowing the metal shaft to pass through, and an inner space is used to hold the motor rotor and to provide a sealing function to a motor stator winding.