Patent · US Active

Spring-operated mechanism having delay circuit

US9373455B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Jörg Knospe · Könnern, DE
Henrik Lohrberg · Frankfurt am Main, DE
Joachim Eggers · Erlangen, DE
Franz KORBER · Mallersdorf, DE
Thomas Brenneis · Mainaschaff, DE

Key dates

Filing date	Feb 3, 2012
Grant date	Jun 21, 2016
Priority date	—
Expiry date	Aug 7, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01H71/44
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A hydromechanical stored-energy spring mechanism is provided for operating at least one switching contact of a circuit breaker, for example, in a high-voltage switching system. The hydromechanical stored-energy spring mechanism includes a hydraulically operated close-open (CO) delay circuit configured to delay triggering of a switching process of the circuit breaker, and an electromechanical actuator provided in place of a hydraulic operation of the CO delay circuit. The electromechanical actuator generates a mechanical time delay or acceleration over an extended temperature range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.