uppblaosbar och toembar dyna och med i saodan dyna foersett lyftdon.

摘要

The present invention relates to an inflatable and deflatable buffer (1) formed by a block of elastically deformable material comprising an internal slit (2) whose walls in the initial state meet to form a solid section of said block and an inflating channel (3) comprising a first end (3a) level with said internal slit and a second end (3b) connected to a pressurised fluid source. The present invention also relates to a thrustor for extending a threaded connecting component, comprising means which exert a piston action on said piston component and are formed by an inflatable and deflatable buffer according to the invention. IMAGE