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:
Jun. 01, 2021
Filed:
Sep. 30, 2019
Aps Technology, Inc., Wallingford, CT (US);
William Evans Turner, Wallingford, CT (US);
Serhiy Korostensky, Fairfield, CT (US);
APS Technology, Inc., Wallingford, CT (US);
Abstract
A sealing assembly having a housing having a main cavity, a sealing unit configured to receive a rotatable shaft, and at least a first sealing element, and a second sealing element positioned uphole with respect to the first sealing element along the longitudinal axis. The sealing assembly includes a first valve carried by the housing and coupled to the first sealing element and the main cavity, and configured to open at a first pressure level. The sealing assembly further includes a second valve coupled to the second sealing element and the main cavity, and configured to open at a second pressure level higher than the first pressure level. The sealing assembly is configured such that pressure is distributed across the first and second sealing elements sequentially.