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:
Jan. 10, 2012
Filed:
Mar. 20, 2009
Lee M Robichaux, Lafayette, LA (US);
Lee J Matherne, Lafayette, LA (US);
Lee M Robichaux, Lafayette, LA (US);
Lee J Matherne, Lafayette, LA (US);
Other;
Abstract
A floating shoulder ring is arranged to occupy the J-space between pin ends of coupled pipe sections. The length of the ring is arranged to allow the pipe connection to approach the specified torque for shoulderless connections before the ring begins to function as an abutment between the approaching pipe ends. The torque accepted by the ring limits the radial force imposed by tapered threads on both pipe and coupling. The ring is provided with modified threads on the outer surface to engage the inner threads of the coupling, in the J-space, to retain the ring in the coupling during handling in preparation for assembly into a pipe string. The modified threads yield axially when substantially forced. Threads that slip axially, non-destructively, and threads that deform under sufficient axial force are provided.