ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,504, issued on March 31, was assigned to Mako Rentals Inc. (Shriever, La.).

"Rotating and reciprocating swivel apparatus and method" was invented by Kip M. Robichaux (Houma, La.) and Terry P. Robichaux (Houma, La.).

According to the abstract* released by the U.S. Patent & Trademark Office: "What is provided is a method and apparatus wherein a rotating and reciprocating swivel of adjustable stroke length and shearable by ram blow out preventers can be detachably connected to an annular blowout preventer thereby separating the lower wellbore from the riser. In one embodiment the mandrel of the swivel extends through a sleeve/housing. The sleeve/housing has a wiping arrangement of ...