Trelleborg has patented a seal assembly with a unique support ring design for high-pressure sealing applications. The seal features primary and secondary sealing lips that abut against machine elements in a dynamically sealing manner. The support ring ensures proper alignment and support for the seal, enhancing overall performance. GlobalData’s report on Trelleborg gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Trelleborg, Marine fenders was a key innovation area identified from patents. Trelleborg's grant share as of March 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Seal assembly for high-pressure side sealing in machines
A recently granted patent (Publication Number: US11920681B2) discloses a seal assembly designed to seal a high-pressure side of a seal gap pressurized with fluid against a low-pressure side. The assembly includes a support ring with curved or obliquely formed edges facing the high-pressure and low-pressure sides, respectively. The seal features a retaining portion, primary sealing lip, and wiper/secondary sealing lip that abut against the second machine element's sealing surface. The primary sealing lip is supported by the support ring's first edge, while the wiper/secondary sealing lip is supported by the second edge. A tension disk made of elastic material is placed between the seal and the first machine element to provide radial and axial tension against the support ring, ensuring effective sealing.
Furthermore, the support ring may have tribo structures on its surface facing the second machine element, enhancing the sealing performance. The primary sealing lip and wiper/secondary sealing lip are positioned pretensioned by deformable elements on the second machine element's sealing surface. The seal assembly's components are made of various materials such as viscoelastic material for the seal, metal, thermosetting plastic, thermoplastic, or ceramic for the support ring. The tension disk's design includes a concave inner side facing the sealing surface and a convex outer side facing the first machine element, ensuring secure and effective tensioning of the seal against the support ring. Overall, the patented seal assembly offers a robust and efficient solution for sealing high-pressure systems, with innovative design features aimed at improving performance and longevity.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
