Power unit that can be telescopically lengthened /shortened and performs linear movement which power unit comprises cylindrical parts moving telescopically within each other in which case the mentioned parts are equipped with at least external or internal threads in such a way that the mentioned parts form a power unit that can be lengthened /shortened when the parts are being rotated in relation to each other and that at least one part of the mentioned parts is locked to be non-rotating or locked to rotate in a different way than the part of the mentioned parts to which part a rotating producing movement to the power unit is arranged. In order to reduce the construction weight of the power unit the mentioned parts are made of plastic and of the mentioned parts the inner diameter of the part having the smallest diameter is over 25 % of the useful height (H) produced by the mentioned smallest part.
A TELESCOPICALLY LENGTHENING/SHORTENING POWER UNIT
VERIN POUVANT S'ALLONGER OU SE RACCOURCIR DE MANIERE TELESCOPIQUE
2018-03-13
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |