FIELD: electric engineering.
SUBSTANCE: windup sleds and provided, as well as hopping sleds that intermittently follow their motion after unblocking. They are directed by three parallel guide rods. Both windup sleds and hopping sleds have three linear bearings each. Each of these linear bearings covers accordingly one of three guide rods.
EFFECT: simplified design and improved reliability.
4 cl, 4 dwg
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