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. 13, 1991
Filed:
Jul. 02, 1990
Jacques Point, Annecy, FR;
Pierre Joulia, Saint Jorioz, FR;
Rena S.A., Meythet, FR;
Abstract
A centrifugal pump, intended for pumping liquids, includes a impeller (1) connected in rotation to a rotor (7) with a permanent magnet that is part of a synchronous motor. The rotor (7) which has an axial clearance (L) is accommodated in a cylindrical housing (10) that is part of the body (9) of stator (8) of the motor. To orient the drive direction (F) of rotor (7) on the starting of the pump, complementary configurations are provided on the front face of rotor (7) away from impeller (1) and at the bottom of housing (10). These configurations comprise helicoidal surfaces (14, 16) connected at their ends by notches (15, 17).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile