Vacuum manipulation apparatus

US6367855B1 · kind B1 · utility

Assignee

• J.SCHMALZ GMBH · DE

Inventors

• Kurt Schmalz · Dornstetten, DE
• Wolfgang Schmalz
• Thomas Eisele · Fluorn-Winzeln, DE

Key dates

• Filing date: Jun 9, 2000
• Grant date: Apr 9, 2002
• Expiry date: Jun 9, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66F3/35
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Vacuum manipulation apparatus includes a lifting hose coupled to a vacuum-generating unit. The lifting hose incorporates a suction gripping device having a suction end adapted for placement against an object to be grasped and lifted. The device includes a flow opening plate adapted to be opened for preventing an abrupt rise of the gripping device upon unintentional release of the grasped object against gravitational forces. In a non-grasping mode, a retractable, spring-loaded push rod extends from the suction end of the device. The push rod retracts whenever the suction gripping device engages a grasped object. A blocking arm attached to the push rod engages the flow opening plate to hold the plate normally closed during the grasping mode. When suction is broken between the grasped object and the suction end of the gripping device, the push rod extends from the device, however, opening the flow opening plate to admit airflow.