OPENTECHNICAL PUBLICATION OT-2026-000001285 Vacuum lifting tube arrangement having extension-lockable lifting tube Published: 2026-09-15T19:04:40.391428Z Permanent URL: https://opentechnical.org/p/OT-2026-000001285 Categories: Material Handling > Conveying Systems ------------------------------------------------------------------------ ABSTRACT A vacuum lifting tube arrangement is disclosed comprising a lifting tool attached to a flexible lifting tube which is retractable from an extended state and extendible from a contracted state, respectively, and a controllable source of vacuum fluidly connected to an inner volume of the flexible lifting tube, and more particularly additionally comprising a locking mechanism preventing extension of the flexible vacuum lifting tube from a contracted state upon deactivation of the source of vacuum. ------------------------------------------------------------------------ OpenTechnical publication OT-2026-000001285 Published 2026-09-15T19:04:40.391428Z https://opentechnical.org/p/OT-2026-000001285