MECHANICAL CATCHER Russian patent published in 2004 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: device has body with anvil, hollow rod telescopically mounted in body with striker and outer shelves, disengage assembly, including bushings mounted in body. Disengage assembly consists of, placed in same plane, perpendicular axis of device, independent elements with outer grooves and inner shelves, made with possible concurrent interaction with respective outer shelves on hollow rod and connected to body through at least one ring shelf made in it, inserted into response outer grooves of elements. Bushings are made with end conical surfaces. Upper and lower surfaces of elements are made conical and compressed in axial direction by springs through bushings along their end conical surfaces for compressing elements in radial direction.

EFFECT: higher efficiency.

2 dwg