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:
Jun. 30, 1992
Filed:
Oct. 03, 1990
Igor Krasnov, Houston, TX (US);
Other;
Abstract
A torque coupling for connecting between upper and lower tubular members of a drill rig allows make up and break out at lower torques than normally required. The coupling has a body which has an upper end that connects to the upper tubular member and lower end which connects to the lower tubular member. The lower tubular member has an upward facing torque shoulder. A torque shoulder sleeve mounts slideably to the body. The torque shoulder sleeve has a downward facing shoulder that engages the torque shoulder of the lower tubular member. The body and the torque shoulder sleeve have opposed load shoulders, at least one of which is conical. A wedge member locates between these load shoulders. When the wedge member slides outward, it decreases the distance between the load shoulders and reduces the pressure of the lower end of the torque shoulder sleeve against the upper end of the lower tubular member.