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:
Sep. 05, 2023
Filed:
Feb. 08, 2022
Applicant:
Egc Operating Company Llc, Chardon, OH (US);
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/3284 (2016.01); F16K 41/02 (2006.01);
U.S. Cl.
CPC ...
F16K 41/02 (2013.01); F16J 15/3284 (2013.01);
Abstract
One or more packing systems and/or methods of manufacture are disclosed for a valve seal with lowered emissions while being complaint with fire standards. The packing system may have alternating mid-layers, a top layer, a bottom layer, and a first end cap and a second end cap. The layers can be formed of a flexible graphite-based material and/or a perfluoroalkoxy alkane (PFA) material. The layers may be bonded together and expand under compression to form a seal between a valve stem and a stuffing box.