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. 23, 2021
Filed:
Apr. 18, 2017
Eagleburgmann Germany Gmbh & Co. KG, Wolfratshausen, DE;
Peter Droscher, Geretsreid, DE;
Andreas Pehl, Poing, DE;
Dieter Pfeil, Konigsdorf, DE;
Berthold Schulten, Geretsried, DE;
Glenn Schmidt, Cambridge, MA (US);
Eric Vanhie, Houston, TX (US);
EagleBurgmann Germany GmbH & Co. KG, Wolfratshausen, DE;
Abstract
A mechanical seal arrangement includes a first mechanical seal with a rotating slide ring and a stationary slide ring, which define a sealing gap in between them. The mechanical seal arrangement includes a first sealing space that is filled with a sealing liquid. The first mechanical seal seals off the sealing space against a surrounding area, a first piston arrangement with a piston element and flexible wall areas that define a first piston interior space, wherein the first piston interior space is in fluid connection with the first sealing space. A piston outer surface of the piston element is in fluid connection with the surrounding area, and a first pre-stressing appliance that exerts a first preload force (F) on the piston element of the first piston arrangement.