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US 6,200,089 B1Granted
Coolant pump
AssigneeTCG Unitech Aktiengesellschaft
InventorSiegfried Heer
Life of this patent
Estimating the term…
Abstract
A coolant pump, in particular for use in internal combustion engines, includes a pump shaft carrying an impeller with substantially axial intake and radial discharge, and a casing provided with at least one roller bearing supporting the pump shaft, and a pulley for driving the pump. A particularly compact design is obtained by firmly connecting the inner race of the roller bearing to the casing, and by attaching the outer race of the roller bearing to the pulley.
Claims10
Coolant pump which includes a pump shaft carrying an impeller having a substantially axial intake and a radial discharge;
- a casing in which said shaft extends, said casing including an annular projection which extends around said shaft and away from said impeller;
- a pulley for driving said shaft, said pulley including an outer portion located radially outwardly of said annular projection, a disc portion which extends radially inwardly toward said shaft, and a hub portion which is attached to said shaft so as to exclusively support said shaft in said casing;
- and a roller bearing mounted between said annular projection and said outer portion of said pulley, said annular projection and said shaft defining a leakage chamber therebetween.
Dependencies are inferred from the claim text.