Patent · US Active

Filling an armature chamber in an actuator

US12305771B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Dominik Guldenschuh · Friedrichshafen, DE
Markus Moosmann · Grünkraut, DE
Markus Diesch · Bierstetten, DE

Key dates

Filing date	Apr 14, 2023
Grant date	May 20, 2025
Priority date	—
Expiry date	May 1, 2043

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2007/086
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An actuator for an assembly in a motor vehicle may have a moving armature in an armature chamber, where the actuator has a fluid path that is configured for fluid transfer between the armature chamber and a fluid reservoir in the assembly when the actuator is installed in an assembly, where the actuator is configured to fill the armature chamber with fluid, in particular oil, when the armature moves axially, thereby drawing fluid into the armature chamber when the actuator is operated in a fluid chamber, in particular an oil chamber.

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