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:
Mar. 19, 2013
Filed:
Jan. 24, 2008
Masayoshi Omori, Hiroshima, JP;
Masayoshi Omori, Hiroshima, JP;
JMS Co., Ltd., Hiroshima, JP;
Abstract
An impellerincludes a rotating shaftsupported rotatably by an upper bearingand a lower bearingat upper and lower ends, a plurality of vanes, an armcoupling an inner circumferential side of the vanes to the rotating shaft, an annular coupling portioncoupled to an outer circumferential side of each vane, and a driven magnet portionplaced in a lower portion of the annular coupling portion. A drive magnet portionprovided at a rotorand a driven magnet portionare opposed to each other with a bottom wall of the housing interposed therebetween, and rotation of the rotor is transmitted to the impeller through magnetic coupling. A blockade memberis placed below the vanes and blocks a space in a region spreading between the rotating shaft and the annular coupling portion while leaving an openingat least around the rotating shaft. In a configuration in which the rotating shaft of the impeller is supported by the upper and lower bearings and a lower portion of each outer circumferential edge of the vanes is coupled to the annular coupling portion, the formation of a blood clot in the vicinity of the lower bearing can be suppressed.