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:
Dec. 26, 2017
Filed:
Jul. 16, 2015
Hydril Usa Distribution, Llc, Houston, TX (US);
Ronny Alexander Moya, Houston, TX (US);
Richard Lee Stringfellow, Houston, TX (US);
Brian Scott Baker, Houston, TX (US);
Hydril USA Distribution, LLC, Houston, TX (US);
Abstract
A piston rod subassembly for use in a blowout preventer operator assembly includes a piston rod having a rod threaded interface and a rod shoulder on an outer diameter of the piston rod. A preload ring has a ring threaded interface for engaging the rod threaded interface to couple the piston rod to the preload ring. A protruding end surface of the piston rod protrudes past an end face of the preload ring when the piston rod is coupled to the preload ring and the rod shoulder engages a ring shoulder of the preload ring. A piston has a pocket for receiving the preload ring. Preload ring fasteners couple the preload ring to the piston to form a piston rod connection between the piston rod and the piston, such that the protruding end surface engages an interior surface of the pocket and a preload is induced in the piston rod connection.