FIELD: metallurgy.
SUBSTANCE: retentive shaft has tumbler pins which can be pushed into the shaft volume along the direction (x) of inlet and pushed out of the shaft volume against the direction (x) of inlet by means of the drive mechanism in the area of the lower end of the shaft construction. Shaft construction has recesses in the area of its lower end, through these recesses the tumbler pins can be pushed into the shaft volume and pushed out of the shaft volume. Scraping elements are positioned at the shaft construction in the area of the recesses, which are adjacent to the shaft construction and enfold the tumbler pins in a plane oriented perpendicular to the direction (x) of the inlet of thecross-sectional plane.
EFFECT: increased reliability.
12 cl, 5 dwg
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