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. 06, 1989
Filed:
Jun. 29, 1988
Jean Boulet, Paris, FR;
Pierre Morin, Levallois Perret, FR;
SMF International, Sur Loire, FR;
Institut Francais du Petrole, Malmaison, FR;
Abstract
The device comprises a variable-angle elbow coupling (14) interposed between the ends (12, 13) of two successive sections of a column. The coupling (14) comprises a first rectilinear tubular element (14a) and a second rectilinear tubular element (14b) connected to the element (14a) and mounted to be rotatable relative to the element (14a) about an axis (16). The axis of the tubular element (14) makes a non-zero angle with the axis (18) of the first section of the column. The end portions of the elements (14a, 14b) are radially offset relative to the axis (18) of the column and connected to the first section (12) and the second section (13) respectively by detachable rigid tubular elbow couplings (15a, 15b). The device of the invention is applicable to a drilling column.