Patent · US Active

Electric cylinder with lubricating oil filling

US11560939B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bernhard Keller · Kaisten, DE
Markus Rumpel · Werneck, DE
Steffen Pfister · Langen, DE

Key dates

Filing date	Oct 6, 2021
Grant date	Jan 24, 2023
Priority date	—
Expiry date	Oct 6, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2025/2096
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An actuator includes a housing, an extension arm, and a threaded spindle. The threaded spindle is mounted on the housing in such a way as to be rotatable with respect to an axis of rotation by a first rotary bearing. The extension arm projects out of the housing in such a way that it can be moved in a direction of the axis of rotation. The housing and the extension arm together delimit an internal space, the volume of which changes when the extension arm moves. A first end of the threaded spindle that is remote from the first rotary bearing, projects into a tubular section of the extension arm, irrespective of a position in which the extension arm is situated. The tubular section extends with a constant internal cross-sectional shape along the axis of rotation.

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