Patent ID: 7988205

Claim:
A threaded pipe connection comprising: a pin member having an external thread increasing in width in one direction; a box member having an internal thread increasing in width in an opposite direction so that complementary internal and external threads move into engagement upon make-up of the connection; a first contact zone located near a distal end of the pin member, the first contact zone comprising at least a portion of a contact surface of the pin member that is not parallel to a flat contact surface of the box member; and a second contact zone located near a distal end of the box member, the second contact zone comprising at least a portion of a contact surface of the box member that is not parallel to a flat contact surface of the pin member; wherein at a final makeup of the connection, at least one of the distal end of the pin member does not engage with the box member and the distal end of the box member does not engage with the pin member.