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:
Aug. 29, 2023
Filed:
Jan. 18, 2022
Stein Seal Company, Kulpsville, PA (US);
Glenn M. Garrison, Perkiomenville, PA (US);
Stein Seal Company, Kuipsville, PA (US);
Abstract
A circumferential seal assembly for use between a higher pressure side and a lower pressure side is presented. The seal assembly includes a primary sealing ring, a second sealing ring, a third sealing ring, and an insert. The primary sealing ring sealingly engages both a face sealing surface along a housing and a radial sealing surface along a rotatable element. The primary sealing ring, the second sealing ring, and the third sealing ring cooperate, in combination with the housing, the rotatable element, and/or the insert, both to define and to separate a first cavity at the higher pressure side and a second cavity at the lower pressure side. In some embodiments, the second sealing ring sealingly engages a face of the primary sealing ring. In other embodiments, the second sealing ring sealingly engages a circumferential surface of the primary sealing ring.