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:
Jul. 28, 2026
Filed:
May. 13, 2022
Hammelmann Gmbh, Oelde, DE;
Egbert Helmig, Ennigerloh, DE;
Christian Stoffers, Rheda-Wiedenbrück, DE;
HAMMELMANN GmbH, Oelde, DE;
Abstract
A sealing device for sealing a rod that is moveable movable in a high-pressure chamber of a pressure-resistant housing filled with a liquid medium, between the high-pressure chamber and a low-pressure region. The sealing device includes a sealing cylinder and a sealing ring for statically sealing a first annular gap and which is arranged resting on an outer jacket surface of the sealing cylinder near the high-pressure-side end face. The sealing cylinder has at least one connecting channel extending from its outer jacket surface to an inner jacket surface. The position of the connecting channel is adapted to the material of the sealing cylinder for preventing deformation of the sealing cylinder in an area remote from the press ring.