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:
Nov. 29, 1994
Filed:
Mar. 06, 1992
David A Leone, Lawrenceville, GA (US);
William A King, Lithonia, GA (US);
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Abstract
A trip circuit for tripping a circuit breaker has a first coil having a relatively large number of turns and therefore a relatively slow reaction time and a second coil having a relatively small number of turns and therefore a relatively fast reaction time. The first coil is responsive to a relatively low current level through a circuit breaker for tripping the circuit breaker at the rated tripping current. The second coil is responsive to a higher current through the circuit breaker for tripping the circuit breaker with great rapidity in case the higher level is reached before the first coil has an opportunity to react.