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. 17, 2019
Filed:
Sep. 30, 2014
Saint-gobain Performance Plastics Corporation, Solon, OH (US);
Mathilde Leboeuf, Ixelles, BE;
Jan Kustermans, Kontich, BE;
Rojendra Singh, Natick, MA (US);
Christophe Valdenaire, Clapiers, FR;
Filip Rousseau, Niel, BE;
Herman M. Dubois, Kontich, BE;
SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US);
Abstract
A stem packing assembly including a first annular member defining a central axis, a second annular member defining a central axis coaxial with the central axis of the first annular member, and an annular energizing member defining a central axis coaxial with the central axis of the first annular member. In an embodiment, the stem packing assembly can have a leakage rate according to ISO 15848-1 of less than 1×10mgsmfor at least 500 cycles at 160° C., and less than 1×10mgsmfor at least 500 cycles at −46° C. In another embodiment, the first annular member can include a PAEK, the second annular member can include a PTFE, and the annular energizing member at least partially includes a PTFE.