ENDOSCOPY TUBE Russian patent published in 1997 - IPC

FIELD: optomechanical instrument engineering. SUBSTANCE: the endoscopy tube uses control members and successively connected annular members made in the form of hollow cylindrical members. Four flat staggered lugs are made on the surface of each annular member. Two lugs on one side of the annular member are worked deeper by the thickness of the member material; openings are provided between the lugs located on one side of the annular member; gaps are made in the middle of the lateral surface of the annular members are connected for turning relative to each other with the non-deepened lugs of the odd annular members. The control members are passed through the gaps of the annular members. Cutouts are provided in the point of transition of the cylindrical part of the annular member to lugs. A stiffening rib is made on the surface of the annular member in the axis of symmetry of each lug, with the rib base facing the lug. Stiffening ribs face inside on the even members, and outside - on the odd ones. EFFECT: simplified design, enhanced precision of fabrication, simplified assembly due to the use of stamped annular members of the same shape. 5 cl, 3 dwg