The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2011
Filed:
Sep. 21, 2006
Franz Schaumberger, Aschach, AT;
Franz Schaumberger, Aschach, AT;
Other;
Abstract
A method for operating vacuum-operated hoists with at least one elastically deformable vacuum-operated lifting mechanism, with a controllable vacuum generator, and with at least one motorized lifting drive is disclosed. A load detection device is used in order to detect the weight of a load picked up by the hoist. The load detection device generates a protection signal directly after detection of a load exceeding a predetermined tare weight of the hoist if the vacuum is insufficient to lift the load. The protection signal indirectly or directly deactivates the lifting drive with the aid of a switch-off control and/or prevents further lifting of the load if an insufficient vacuum or no vacuum is present when an increased load is detected and lifting begins.