US Patent 9010727 Valve stem assembly for rotary valve and method

Patent 9010727 was granted and assigned to Worldwide Oilfield Machine on April, 2015 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Worldwide Oilfield Machine

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

9010727

Date of Patent

April 21, 2015

Patent Application Number

13932480

Date Filed

July 1, 2013

Patent Primary Examiner

‌

Marina Tietjen

Patent abstract

A valve body defines a valve stem opening. A valve stem comprises an enlarged portion greater than the valve stem opening to thereby secure the valve stem within the valve body by limiting radially outward movement of the valve stem with respect to the valve body. A rotary member comprise upper and lower bosses. Upper and lower split trunnions, with split components that can be inserted from opposite sides of the valve body, are used to rotationally support the upper and lower bosses to permit rotation of the rotary member while preventing axial movement of the axial flow path of the valve.