Patent ID: 9328608
Filing Date: 2016-05-03
CPC Classification: E21B,Y10T

Claim Text:
1. A core barrel head assembly, comprising: a sleeve; a latch body moveably coupled to the sleeve; a driving member positioned at least partially within the sleeve; a landing member positioned at least partially within the latch body; a plurality of wedge members positioned on the driving member, wherein axial movement of the driving member relative to the plurality of wedge members moves the plurality of wedge members radially relative to the sleeve between a latched position and a released position, wherein the plurality of wedge members rotationally and axially lock the core barrel head assembly relative to a drill string when in the latched position; and a plurality of braking elements positioned on the landing member, wherein axial movement of the landing member relative to the plurality of braking elements moves the plurality of braking elements radially relative to the latch body between a retracted position and an extended position.