Patent · US Active

Vibration damper and motor vehicle with active suspension

US12251972B2 · kind B2 · utility

0Cited by

1References

9Claims

0Family size

Assignees

Dr. Ing. h.c. F. Porsche AG · DE
ZF FRIEDRICHSHAFEN AG · DE

Inventors

Swen Zschocke · Serres, DE
Robert Schreiber · Friedrichroda, DE
Rainer Beilner · Bergrheinfeld, DE

Key dates

Filing date	Jul 9, 2024
Grant date	Mar 18, 2025
Priority date	—
Expiry date	Jul 9, 2044

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F2230/105
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A vibration damper with a damper piston which is arranged in a main tube with hydraulic medium and can be moved to and fro in an axial direction relative to the main tube. The main tube is arranged in a container tube, wherein an intermediate tube is arranged between the main tube and the container tube. The main tube, the intermediate tube and the container tube are arranged coaxially in a three-tube damper. The damper piston is attached at one end of a piston rod. The three-tube damper is equipped with a hydraulic end-position damping and at its end opposite the piston rod, has a central valve block with two damper valve devices. The central valve block is partially fitted with an air spring resting on an axial support ring which is connected by a single main weld seam to the container tube and central valve block by substance bonding.

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