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:
Feb. 25, 2025
Filed:
Aug. 10, 2023
Fisher Controls International Llc, Marshalltown, IA (US);
Michel Ken Lovell, Marshalltown, IA (US);
Trenton F. Jackson, Marshalltown, IA (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
A packing system is disclosed for use with a valve having a valve body that defines a flow passage therethrough. The packing system includes a bonnet configured for connection to the valve body, a stem bore extending through the bonnet to receive a stem of the valve that is movable within the stem bore to control flow through the flow passage, a first packing set arranged in the stem bore surrounding a first portion of the stem, a second packing set arranged in the stem bore surrounding a second portion of the stem that is spaced apart from the first packing set by a support ring to define an inter-packing volume within the stem bore, and a pressurized barrier lubricant reservoir in communication with the inter-packing volume via a bonnet port in the bonnet to pressurize barrier lubricant within the inter-packing volume to be at or above a process pressure.