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Application filed by Віталій Рувімович Шейнін, Виталий Рувимович ШейнинfiledCriticalВіталій Рувімович Шейнін
Priority to UA94020320ApriorityCriticalpatent/UA15807C2/en
Publication of UA15807C2publicationCriticalpatent/UA15807C2/en
A pulley block contains a drive shaft, a spring-loaded friction brake installed on it, a brake hydraulic cylinder for control of friction brake made with a stock moving in axial direction. The drive of shaft includes a plate installed in the cavity made in its end; said plate forms a friction pair with internal surface of cavity. Brake hydraulic cylinder is secured on said plate, and pulley block is equipped with a lever of hand drive of pulley block with control handle of brake secured on it, pump-hydraulic cylinder and flexible hose. Flexible hose is connected by one end with the brake hydraulic cylinder, and by other end - with said lever. In this case the piston cavity of brake hydraulic cylinder is connected with pump-hydraulic cylinder by means of said flexible hose.