The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2022
Filed:
Mar. 11, 2019
Hydac Technology Gmbh, Sulzbach/Saar, DE;
Herbert Baltes, Losheim, DE;
Peter Kloft, Ransbach-Baumbach, DE;
Petra Jochum, Quierschied, DE;
Daniel Rau, Saarbruecken, DE;
HYDAC TECHNOLOGY GMBH, Sulzbach/Saar, DE;
Abstract
A pressure accumulator having an accumulator housing () in which a movable separating element () separates a gas chamber () filled with a working gas from a fluid chamber () in a fluid-sealed manner. A monitoring device () is provided, which, in the event of a fault impairing the sealing effect of the separating element (), provides an optically discernible indication and has an inspection window (), through which an indicator can be observed. The monitoring device is connected to the gas chamber () and changes optical properties discernibly when wetted with the fluid. The indicator changing its optical properties is accommodated in a capsule () with a capsule wall () permeable to the passage of the fluid and arranged between the inspection window () and the separating element () in the accumulator housing ().