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:
May. 16, 1989
Filed:
Dec. 23, 1987
Applicant:
Inventor:
Olavi Jussila, Hyvinkaa, FI;
Assignee:
Kone Oy, , FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ; H02K / ;
U.S. Cl.
CPC ...
310 63 ; 165 803 ; 310 89 ; 361384 ;
Abstract
An electromechanical drive has an ac motor provided with a brake, a frequency converter provided with a control unit and supplying the motor, and a transmission gearing connected to the output of the motor. To achieve efficient cooling, the drive is provided with a cooling tunnel housing the motor and the brake; the control unit and the power stage semiconductor switches of the frequency converter are located on the outer walls of this tunnel; and the transmission gear is located in or adjacent the tunnel.