Locking and/or unlocking device for head of coring bit in drilling well, has spring interposed between anchoring point that includes pin slidably mounted inside compression part and another anchor point that includes proximal end of device

摘要

The device (3) has a first spring interposed between a housing (14) and a clevis joint of a set of clamps (17, 17'). A second spring is interposed between the housing and a compression part. A third spring is interposed between the compression part and a push-button (30). A fourth spring is interposed between an anchoring point (101) that includes a pin (28) slidably mounted inside the compression part and another anchor point (102) that includes a proximal end (12) of the device. The clevis joint is movable in translation along an extension axis (A1).