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. 29, 1977
Filed:
Sep. 23, 1975
Applicant:
Inventor:
Kurt Fork, Rosenbach near Erlangen, DT;
Assignee:
Kraftwerk Union Aktiengesellschaft, Mulheim (Rurh), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ; H02H / ;
U.S. Cl.
CPC ...
322-8 ; 322 37 ; 361 21 ; 361 52 ;
Abstract
In a system for limiting torque occurring in a turbine-generator shaft when a three-pole short circuit is switched off, one pole of a switch that switches-off the short circuit is opened first, and both of the other poles are then opened after the passage of a predetermined delay period.