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. 01, 2008
Filed:
May. 22, 2002
Andrew Beach, Boddington, AU;
Andrew Beach, Boddington, AU;
2iC Australis Pty Ltd, Canning Vale, WA, AU;
Abstract
Inner core barrel head assembly () includes an upper latch body (), a plurality of latching balls () which are retained in the latch body () and a locking sleeve () disposed within the latch body (). The sleeve () has an outer circumferential latching surface () of a first outer diameter and an outer circumferential release surface () of a second outer diameter smaller than the first outer diameter. The locking sleeve is axially moveable relative to the upper latch body () between a latching position and a release position. In the latching position, the latching surface () is in radial alignment with the balls (), forcing the balls () radially outwardly into a latch seat () provided on a core barrel () attached to a lower end of a drill rod (). This latches the assembly () to the core barrel preventing withdrawal. In the release position, release surface () is in radial alignment with the balls () allowing the balls () to move radially inwardly out of engagement with the latch seat ().