Patent · US Active

Hydropneumatic piston accumulator

US10941789B2 · kind B2 · utility

0Cited by

8References

15Claims

0Family size

Assignee

HYDAC TECHNOLOGY GMBH · DE

Inventors

Peter Kloft · Ransbach-Baumbach, DE
Herbert Baltes · Losheim, DE
Alexander Albert · Wallerfangen, DE

Key dates

Filing date	Jun 19, 2017
Grant date	Mar 9, 2021
Priority date	—
Expiry date	Nov 22, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B2201/515
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydropneumatic piston accumulator has an accumulator housing (1) defining a housing longitudinal axis (11) and a piston (9) longitudinally movable between two housing covers (5, 7) positioned opposite each other. In the housing (1), the piston (9) separates a working chamber (13) for a compressible medium, such as a working gas, from a working chamber (15) for an incompressible medium, such as hydraulic fluid. A piston part (55) of a displacement measurement device continuously determines each position of the piston (9) in the housing (1). A rod-shaped guide (29, 57) is stationarily positioned in the accumulator housing (1) and passes all the way through the piston (9) in each of its displacement positions in the accumulator housing (1). The piston (9) is movably guided along the guide until it reaches the stop on one of the two housing covers (5, 7) and is sealed against this guide (29,57) using a sealing device (49, 50).

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