Improvements in the cabestrantes for removal facilities of mining wells, in particular, winchers of interior wells (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the winches for mine shaft extraction installations, in particular small inner winches, characterized in that the hydraulic transmission, preferably a hydrostatic transmission, has been envisaged as an additional regulating transmission in bypass with a main gear of planetary wheels. (Machine-translation by Google Translate, not legally binding)