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:
Feb. 20, 1990
Filed:
Apr. 14, 1989
Applicant:
Inventors:
Dale B Marietta, Singapore, SG;
Alistair MacDonald, Cowiewynd, GB;
Assignee:
Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
285 39 ; 285 92 ; 285334 ;
Abstract
A locking device for locking the threaded connection of two tubular members together utilizes a key. The threaded members have an overlapping section. One of the sections has a slot machined in it. A key is driven into this slot. The key fits in an interference fit to secure the members. The key has an enlarged head to enable the key to be extracted if the connection needs to be loosened.