OPENTECHNICAL PUBLICATION
OT-2026-000003303

Vacuum lift device

Published: 2026-09-15T20:06:06.709648Z
Permanent URL: https://opentechnical.org/p/OT-2026-000003303
Categories: Lifting, Positioning & Manipulation > Lift Tables and Positioners

------------------------------------------------------------------------

ABSTRACT

A vacuum lift device comprising a lift tube which is able to contract and
expand in an upward and downward direction, and a lift tube expansion control
valve controlling the opening areas of the atmospheric openings of the lift
tube. A hovering control valve controlling the flow area between the second
atmospheric opening and the interior of the lift tube is provided. The lift
tube expansion control valve is normally positioned at a position such that is
completely covers the first atmospheric opening, and the second atmospheric
opening is open to the outside space. At this time, the level of vacuum in the
lift tube is adjusted by the hovering control valve so that an object to be
lifted is maintained at a desired height.

1. Drawings

[0001] Sheet 1.

[0002] Sheet 2.

[0003] Sheet 3.

[0004] Sheet 4.

[0005] Sheet 5.

[0006] Sheet 6.

[0007] Sheet 7.

[0008] Sheet 8.

[0009] Sheet 9.

[0010] Sheet 10.

------------------------------------------------------------------------

OpenTechnical publication OT-2026-000003303
Published 2026-09-15T20:06:06.709648Z
https://opentechnical.org/p/OT-2026-000003303