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. 01, 1987
Filed:
Feb. 10, 1986
Applicant:
Inventor:
Pierre Demeyer, Uriage, FR;
Assignee:
Merlin Gerin S.A., , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 96 ; 361 50 ; 364483 ;
Abstract
A microprocessor-based digital solid-state trip-unit for processing digital signals derived from analog signals supplied by current sensors. In order to reduce measurement error of the peak value of the signals due to signal sampling, the microprocessor samples a signal latched at the last peak. A countdown timer determines the latching time to include two or three peak values.