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:
Mar. 27, 1990
Filed:
May. 24, 1988
Applicant:
Inventor:
Jean-Jacques Bertrand, Sassenage, FR;
Assignee:
Pomagalski, S.A., Fontaine, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318 77 ; 318 59 ; 318 68 ;
Abstract
A technique for driving with continuous synchronized movement a plurality of parallel pulling cables of a transportation installation in a direction parallel to the cables comprising at least one vehicle connected in line to the cables. Each cable is driven by a separate independent drive device powered by a dedicated power source. Drive forces in each drive device are monitored and used to control the drive device speed of at least one drive device so as to maintain equal cable speeds.