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:
Jan. 29, 2002
Filed:
Mar. 20, 2000
Philippe Fanuel, Brussels, BE;
Paul Serron, Brussels, BE;
Dresser Industries, Inc., Carrollton, TX (US);
Abstract
The invention concerns a core barrel, in particular in the field of oil exploration, comprising at least an outer tube ( ) and a core bit ( ) forming an outer assembly ( ) and at least an inner tube ( ) forming with a drilling core optionally present therein, and optionally with part of the groups arranged under the drilling core base, an inner assembly ( ), suspension and/or guiding means being provided for maintaining the inner assembly ( ) inside the outer assembly ( ), the suspension and/or guiding means being further arranged such that the inner assembly ( ) maintains at least perpendicular to these means ( ), with respect to the outer assembly ( ), a predetermined axial and/or radial and/or angular freedom of movement greater than usual.