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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-5470117-A, on 28 November 1995. 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-2026-000003295

Vacuum lifter and method

Published
Permanent URL
Classification
Robotics & Automation › Robot Architectures
Inventors
SCHMIDT ADOLF
Assignee
BARTHOLOMY & CO
Original source
US-5470117-A, the United States Patent and Trademark Office, 28 November 1995
Document SHA-256
387d7ae85310b65d072b8f9b02dc7ec93c531ae2d5af73a4decb42d5cc85bbe7

A vacuum lifter for a moving load having an adhesion surface comprising at least one suction head having several annular seals projecting from its suction side and forming vacuum spaces enclosed by the seals. The vacuum spaces communicate with a vacuum source. The vacuum source communicates through valves with the outer vacuum space. The valves are controlled by sensors detecting the magnitude of the adhesion surface of the load. In order to prevent impulsive detachment and especially unwanted renewed lifting of the load after it has been deposited, a compressed-air system associated with at least one of the vacuum spaces and a control system turns ON and OFF the compressed-air system in order to initially raise the pressure to atmospheric and to thereafter generate a positive pressure air cushion separating the lifter from the load.

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Abstract

A vacuum lifter for a moving load having an adhesion surface comprising at least one suction head having several annular seals projecting from its suction side and forming vacuum spaces enclosed by the seals. The vacuum spaces communicate with a vacuum source. The vacuum source communicates through valves with the outer vacuum space. The valves are controlled by sensors detecting the magnitude of the adhesion surface of the load. In order to prevent impulsive detachment and especially unwanted renewed lifting of the load after it has been deposited, a compressed-air system associated with at least one of the vacuum spaces and a control system turns ON and OFF the compressed-air system in order to initially raise the pressure to atmospheric and to thereafter generate a positive pressure air cushion separating the lifter from the load.

1. Drawings

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[0002]Sheet 2.

[0003]Sheet 3.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003295, “Vacuum lifter and method,” published September 15, 2026 at 20:04:10 UTC, https://opentechnical.org/p/OT-2026-000003295.

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