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:
Jul. 19, 2011
Filed:
Aug. 16, 2005
Lynn Dean Mahncke, Marshalltown, IA (US);
David John Koester, Gladbrook, IA (US);
Jason Gene Olberding, Marshalltown, IA (US);
Andrew Kinser, Walnut, IA (US);
Lynn Dean Mahncke, Marshalltown, IA (US);
David John Koester, Gladbrook, IA (US);
Jason Gene Olberding, Marshalltown, IA (US);
Andrew Kinser, Walnut, IA (US);
Fisher Controls International LLC, Marshalltown, IA (US);
Abstract
A packing nut assembly for a control valve having a valve body and a valve stem includes a packing box arranged for operative coupling to the valve body and having a primary bore sized to receive the valve stem and first and second counterbores. The first counterbore is sized to receive valve packing and the second counterbore includes internal threads. A packing nut having a central bore is sized to receive the valve stem and includes a threaded outer surface positioned to engage the second counterbore of the packing box. The packing nut includes an adjustment surface positioned to face the first counterbore, and includes an adjustment head having a plurality of tool-receiving apertures sized to receive an adjustment tool.