HINGED DEFLECTOR Russian patent published in 1996 - IPC

FIELD: well drilling. SUBSTANCE: hinged deflector includes case, shaft, oil filled support installed on the shaft, and turbodrill steps, hinge with upper arm connected to the shaft through coupling comprising fork-type semi-couplings, and cross-type cylindrical insertion piece. Semi-spheres are installed upper and lower the hinge. The semi-spheres have rubber coating inside. Passages are originated in the coating. Adjust sleeve is installed over the hinge. All parts are pressed down by the adapter from top, and nozzle from bottom. Adjust sleeve may be conical or eccentric depending on the task preset. EFFECT: high efficiency. 3 cl, 5 dwg