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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5284416-A, on 8 February 1994. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003357

Vacuum lifter

Published
Permanent URL
Classification
Robotics & Automation › Robot Architectures
Inventors
RECHENER KARL-HEINZ, SCHMIDT ADOLF
Assignee
RECHENER KARL HEINZ, SCHMIDT ADOLF
Original source
US-5284416-A, the United States Patent and Trademark Office, 8 February 1994
Document SHA-256
ad2fac33465b74605d3965372a60bca5a52a2eb88bebae8d265f433de136053b

The invention concerns a vacuum lifter to transport loads with an adhesion surface, comprising at least one suction head suspended from a hoist, said suction comprising at least one annular seal projecting from its suction side, the vacuum chamber(s) enclosed by the annular seal(s) communicating with a vacuum source, a valve furthermore being provided which can be switched between a suction position wherein the vacuum source communicates with the pressure chamber or vacuum chambers and a venting position wherein the communication with the vacuum source is interrupted and the vacuum chamber(s) is (are) vented or fed with compressed air. To assure venting or compressed-air supply immediately upon deposition of the load, the hoist is connected by a fitting 55 to the suction plate 5, said fitting being guided in vertically displaceable manner between two end positions, a sensor or a limit switch 59 being provided to detect the lower end position of the fitting 55 and so cooperating with a control means that following lowering of the fitting 55, the valve 20 shall be switched into the venting position if previously having been in the suction position.

Sheet 1
Sheet 1

Abstract

The invention concerns a vacuum lifter to transport loads with an adhesion surface, comprising at least one suction head suspended from a hoist, said suction comprising at least one annular seal projecting from its suction side, the vacuum chamber(s) enclosed by the annular seal(s) communicating with a vacuum source, a valve furthermore being provided which can be switched between a suction position wherein the vacuum source communicates with the pressure chamber or vacuum chambers and a venting position wherein the communication with the vacuum source is interrupted and the vacuum chamber(s) is (are) vented or fed with compressed air. To assure venting or compressed-air supply immediately upon deposition of the load, the hoist is connected by a fitting 55 to the suction plate 5, said fitting being guided in vertically displaceable manner between two end positions, a sensor or a limit switch 59 being provided to detect the lower end position of the fitting 55 and so cooperating with a control means that following lowering of the fitting 55, the valve 20 shall be switched into the venting position if previously having been in the suction position.

1. Drawings

[0001]Sheet 1.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003357, “Vacuum lifter,” published September 15, 2026 at 20:15:28 UTC, https://opentechnical.org/p/OT-2026-000003357.

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