Patent · US Active

Bistable magnetic actuators

US8461951B2 · kind B2 · utility

54Cited by

6References

7Claims

0Family size

Assignee

Johnson Electric Dresden GMBH · DE

Inventors

Jörg Gassmann · Dresden, DE
Steffen Schnitter · Dresden, DE
Marcus Herrmann · Neuffen, DE

Key dates

Filing date	Apr 6, 2011
Grant date	Jun 11, 2013
Priority date	—
Expiry date	Apr 6, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01H51/2272
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a bistable magnetic actuator with a polarized magnetic circuit with parallel operating air gaps, wherein between the outer legs of a U-shaped soft-iron yoke a flat permanent magnet is integrated that carries a soft-iron center leg and applies a permanent-magnetically created magnetic flux to a rocking armature supported on the center leg, wherein at each outer leg a separately controllable excitation winding provides swiveling pulses for the rocking armature to swivel from one permanent-magnetically self-holding swivel position into the other, the permanent-magnetically created magnetic flux through the magnetic circuit closed over the rocking armature in each case for an electromagnetic magnetic flux created by the excitation winding of said magnetic circuit in a direction opposed to the permanent-magnetically created magnetic flux commutates into the other parallel magnetic circuit with the electromagnetically not excited excitation winding, swiveling over the rocking armature.

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