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. 03, 1976
Filed:
Jun. 24, 1974
Werner Gakenholz, Bietigheim-Wurtt., DT;
Abstract
A fuel pump, comprises an electric motor mounted in a tubular housing which is formed with a tapered portion at the take-in side, and an impeller which is mounted adjacent the tapered portion of the housing on the armature shaft of the motor for rotation therewith. A disc-shaped wall concentrical of the armature shaft separates the impeller from the motor space and is formed, at its circumference, with a channel-shaped annular duct open toward the periphery of the impeller. The radially extending impeller blades are thereby enclosed between the tapered portion of the housing and the disc-shaped wall, and the fuel is guided radially into the annular duct. The inside cross-section of the duct is appropriately increasing along the circumference so that the fuel speed is reduced with minimum losses of energy and passes through apertures in the annular duct to the inside periphery of the motor space to which it is urged due to centrifugal forces and along which it is guided by longitudinal ribs prior to passing to the outlet. To improve the efficiency of the impeller, the blades are covered by an annular wall at the side remote from the tapered portion of the housing.