Threaded connection especially for radially plastically expandable conduit
AssigneeHydril Company
InventorRobert S. Sivley IV
Life of this patent
Estimating the term…
Abstract
A threaded connection for a conduit is disclosed. The connection includes a male member having threads on it defining a load flank lead, a stab flank lead and a nominal lead. A female member has threads thereon adapted to mate with the threads on the male member. The threads on the female member define a load flank lead, a stab flank lead and a nominal lead. At least one of the load flank lead and the stab flank lead, on at least one of the female member and the male member, is changed at a predetermined rate beginning at a selected distance from an end of the threads. The load lead and the stab lead are different from each other over at least part of the thread length.
Claims44
A threaded connection for a radially, plastically expandable conduit, comprising:
- a male member having threads thereon defining a load flank lead, a nominal lead and a stab flank lead;
- a female member having threads thereon adapted to mate with the threads on the male member, the threads on the female end defining a load flank lead, a nominal lead and a stab flank lead, at least one of the load flank lead and the stab flank lead on at least one of the female member and the male member changed at a predetermined rate beginning at a selected distance from an end of the threads, the stab flank lead and the load flank lead being different from each other over at least part of a thread length.
A threaded connection, comprising:
- a male member having threads thereon defining a load flank lead and a stab flank lead;
- a female member having threads thereon adapted to mate with the threads on the male member, the threads on the female end defining a load flank lead and a stab flank lead, at least one of the load flank lead and the stab flank lead on at least one of the female member and the male member changed at a predetermined rate beginning at a selected distance from an end of the threads, the stab flank lead and the load flank lead being different from each other over at least part of a thread length.
A threaded connection for a radially, plastically expandable conduit, comprising:
- a male member having threads thereon defining a load flank lead, a nominal lead and a stab flank lead;
- and
- a female member having threads thereon adapted to mate with the threads on the male member, the threads on the female end defining a load flank lead, a nominal lead and a stab flank lead, the load flank lead and the stab flank lead on the female member and the male member changed at a predetermined rate beginning at a selected distance from each end of the threads, the stab flank lead and the load flank lead being different from each other over at least part of a thread length.
Dependencies are inferred from the claim text.