Patent · US Active

Spring drive cam for a spring drive of a circuit breaker

US11651909B2 · kind B2 · utility

0Cited by

3References

11Claims

0Family size

Assignee

Hitachi Energy Switzerland AG · CH

Inventors

Jakub Korbel · Baden, CH
Matt Cuppett · Uniontown, US
Brian Christopher · Clio, US
Richard James Thomas · Kettering, US
Sami Kotilainen · Brugg, CH
Staffan Jacobsson · Grangärde, SE
Benny Wedin · Sudetenstraße, SE
Francesco Agostini · Zofingen, CH

Key dates

Filing date	Aug 17, 2021
Grant date	May 16, 2023
Priority date	—
Expiry date	Aug 22, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2235/01
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (α) of the radius (R) relative to a base angle (α0), and whereby a rate (dR/dα) defined by a change of the radius (R) per change of the angle (α) is ≤0.3 mm/°.

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