| 摘要 |
Abstract 5 Driven latch mechanism A core barrel head assembly (110), includes a sleeve (204), a latch body (308) moveably coupled to the sleeve (204), and a driving member (302) positioned at least partially within the sleeve (204). A landing member (312) is positioned at 10 least partially within the latch body (308). A plurality of wedge members (300) are positioned on the driving member (302), wherein axial movement of the driving member (302) relative to the plurality of wedge members (300) moves the plurality of wedge members (300) radially relative to the sleeve (204) between a latched position and a released position. A plurality of braking elements (310) are 15 positioned on the landing member (312), wherein axial movement of the landing member (312) relative to the plurality of braking elements (310) moves the plurality of braking elements (310) radially relative to the latch body (308) between a retracted position and an extended position. WO 2011/044314 PCT/US2010/051747 ---- ----- ---- - ------ ---------- ---- ---- - -1-- - ---- ~- --!--!-!!-!- |
