ROPE HOIST Russian patent published in 1994 - IPC

FIELD: hoists. SUBSTANCE: initial section of guides 3 and 4 on which vessels 1 and 2 move is made from several rectilinear sections 8 and 9. The number of sections 8 and 9 is equal to the number of cycles of unsteady motion. The acceleration is constant for each cycle. The slope angle of each section is smaller than that of the steady mode section and is determined from a presented formula. EFFECT: improved structure. 2 cl, 2 dwg