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. 23, 1976
Filed:
Oct. 01, 1974
Applicant:
Inventor:
Shinichiro Arakawa, Fujisawa, JA;
Assignee:
Ebara Manufacturing Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04D / ; F04D / ;
U.S. Cl.
CPC ...
417424 ; 415211 ; 4152 / ;
Abstract
In a submerged pump of a type having a pump casing in which a cylindrical motor casing is housed, the pump casing and the motor casing are constructed in such a way that the pump casing is given the shape of a polygonal column and the motor casing substantially inscribes the inner surface of the respective walls of the pump casing. The space defined by the adjacent inscribing lines and the portions of the walls between the lines is adapted to pass water without creating spiral flow therethrough from a discharge port of the volute chamber toward the discharge opening of the pump.