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:
Aug. 15, 2000
Filed:
Sep. 16, 1998
TCG Unitech Aktiengesellschaft, Kirchdorf/Krems, AT;
Abstract
The invention relates to an electrically operated coolant pump with a rotor which is encompassed by a stator of the electromotor and comprises a rotor shaft with hollow design through which the liquid supply to the impeller is made, with the stator being arranged in a stator chamber of the motor housing and the rotor shaft being rotationally held in the motor housing, with the bearing of the rotor shaft being effected by way of roller bearings. In order to increase the efficiency and reduce the wear and tear of the bearings, it is proposed that at least one roller bearing is arranged as a leakproof roller bearing and sealing elements are integrated in the roller bearing cages, and that the stator chamber which is separated in a leakproof manner from the conveying liquid is provided with a dry design.