Patent · US Active

Controllable vibration damper

US11285775B2 · kind B2 · utility

3Cited by

8References

19Claims

0Family size

Assignee

KENDRION (VILLINGEN) GMBH · DE

Inventors

Björn Bergfeld · Erzingen, DE
Frank Zelano · St. Georgen, DE
Holger Brandenburg · Villingen-Schwenningen, DE

Key dates

Filing date	May 2, 2018
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Nov 14, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F2228/066
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A controllable shock absorber, in particular for motor vehicles, comprising a valve device comprising a bridge circuit with four non-return valves which are connected crosswise in the forward direction, the connection of a first bridge branch with two non-return valves that are arranged opposite each other form a pressure chamber and the connection of the second bridge branch with two non-return valves arranged opposite each other form a low pressure chamber, a hydraulic main slide arranged between the low pressure chamber and the pressure chamber, a pilot chamber which is connected to the pressurised fluid line which is part of the upper working space (traction area) by means of a fifth non-return valve, and a pilot valve which connects the low pressure chamber to the pilot chamber, the pilot chamber being connected to the high-pressure chamber by means of a diaphragm.

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