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:
Feb. 10, 2004
Filed:
Jan. 03, 2002
Naofumi Saeki, Ibaraki, JP;
Calsonic Kansei Corporation, Tokyo, JP;
Abstract
A once-through pump is provided which is able to improve air-blowing efficiency, reduce operation noise, and achieve a sufficient amount of blast or flow rate even within a limited design space. The once-through pump for accelerating fluid (F) in a flow passage (P) while passing the fluid (F) through the flow passage (P) includes a cylindrical impeller ( ) rotatably supported in the flow passage, a plurality of vanes ( ) provided on the outer periphery of the impeller ( ), and a motor for driving the impeller to rotate. The impeller ( ) has a substantially D-shaped cross sectional configuration with a suction side, at which the fluid (F) is sucked into the impeller ( ), being formed into a straight portion ( ). Each of the vanes ( ) has a positive vane angle with respect to a fluid advancing or flowing direction (A) in the straight portion ( ).