СЛЕДЯЩЕЕ УСТРОЙСТВО СИСТЕМЫ УПРАВЛЕНИЯ

摘要

FIELD: power mechanical engineering. ^ SUBSTANCE: device comprises movable shaft, unmovable bushing that is fit on the shaft , and contact sealing rings. The contact sealing rings are mounted with a spaced relation and cooperate with the contact surfaces of the appropriate parts. One of the contact sealing rings can slide over the seat surface of the unmovable part of the bushing. The other ring cooperates with the movable part of the shaft. The flexible ring-shaped shield of variable cross-section is interposed between the contact sealing rings. ^ EFFECT: enhanced precision of control and improved safety. ^ 1 dwg