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:
May. 26, 2026
Filed:
May. 01, 2025
Aigi Environmental Inc., Nanjing, CN;
Jingwei Zhao, Nanjing, CN;
Jun Zhang, Nanjing, CN;
AIGI ENVIRONMENTAL INC., Jiangsu, CN;
Abstract
The application relates to a cartridge sealing device comprising a shaft sleeve, a locking ring, a shaped sealing ring assembly comprising first and second shaped sealing rings, a semi-solid mud filler, a cylindrical main gland forming a cylindrical space with the shaft sleeve and having a threaded joint, an annular auxiliary gland, a support frame comprising one or more axial rods, and one or more detachable positioning blocks. The one or more axial rods is configured such that an interval between the first and second shaped sealing rings can be varied between a minimum interval and a maximum interval. The threaded joint is adapted to be connected to an external injector for injecting the filler to increase a sealing pressure in the cylindrical space or to be blocked such that the sealing pressure can be adjusted by a pre-tightening mechanism securing the auxiliary gland to the main gland.