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:
Dec. 11, 2001
Filed:
Aug. 10, 2000
Applicant:
Inventors:
Viktor Arbanas, Baden, CH;
Ernst Zysset, Macolin, CH;
Assignee:
The Swatch Group Management Services AG, Biel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/116 ; H02K 9/19 ;
U.S. Cl.
CPC ...
H02K 7/116 ; H02K 9/19 ;
Abstract
The invention concerns a driving unit including a liquid cooled electric motor (,) and a planetary gear (,). One of the three main elements of the planetary gear, namely the element used as the reaction element, drives the positive displacement pump of the cooling circuit. Preferably, this element is the ring gear with an inner toothing (,) and said ring gear itself constitutes the pump rotor. The liquid circuit passes into a hollow shaft (,) of the motor rotor and through a radiator (,) incorporated in the common casing (,) containing the motor and the gear. Such a driving unit can be applied to driving a machine or a vehicle.