FIELD: soil or rock drilling; mining.
SUBSTANCE: group of inventions relates to oil-field downhole tools, in particular to methods and devices for transfer of rotary motion energy to consumer. Downhole device comprises a first component having a first member and a second component having a second member. At that, the first component and the second component are connected by multi-threaded connection, and the first element and the second element are functionally connected to each other, when the first element and the second element have the specified mutual angular alignment. Specified preset mutual angular alignment is established only after application of specified torque to multi-start connection. First component has at least one shoulder and second component has at least one collar, and application of said specified torque is provided after said at least one collar of first component and at least one collar of second component are bent into each other.
EFFECT: technical result is successive formation of functional connection between threaded elements.
15 cl, 8 dwg
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