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:
Nov. 05, 1996
Filed:
Oct. 19, 1995
Yuji Nomoto, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
An impeller structure of a closed type centrifugal pump suitable for inelastic fluids such as an engine coolant, comprises front and rear shrouds having a driven connection with a pump drive shaft, and a series of blades provided between the front and rear shrouds for pressurizing an incoming fluid. An inner edge (17a) of a first blade of two adjacent blades is formed to be up-sloped from its inside corner to its outside corner, whereas an inner edge (17c) of a second blade of the two adjacent blades is formed to be down-sloped from its outside corner to its inside corner, so as to enhance an efficiency of the pump, suppressing occurrence of cavitation at or near the pump inlet.