| 摘要 |
FIELD: survey device to survey wells during drilling and operation, particularly to unite modules during cooperation thereof. ^ SUBSTANCE: device comprises body including two parts and ball finger. The ball finger has spherical surfaces mating upper body part. The ball finger is fastened by pressing nut. Lower part of ball finger is screwed in lower body part to which sleeve performing limited axial movement is connected. The sleeve movement is limited by retaining nut. Uniting device air-tightness is provided by sealing ring and pressing nut installation. ^ EFFECT: increased degree of uniting device movement freedom, improved air-tightness. ^ 1 dwg |
