Handling: hand and hoist-line implements – Utilizing fluid pressure
Reexamination Certificate
2006-09-21
2011-12-06
Kramer, Dean (Department: 3652)
Handling: hand and hoist-line implements
Utilizing fluid pressure
C294S186000, C294S907000, C414S627000
Reexamination Certificate
active
08070203
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.
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PCT Search Report for PCT/EP2006/009173 filed on Sep. 21, 2006 in the name of Eckelt Glass GmbH et al. (English translation).
PCT Written Opinion for PCT/EP2006/009173 filed on Sep. 21, 2006 in the name of Eckelt Glass GmbH et al. (English translation).
PCT International Preliminary Report on Patenability for PCT/EP2006/009173 filed on Sep. 21, 2006 in the name of Eckelt Glass GmbH et al. (English translation).
Kramer Dean
Steinfl & Bruno LLP
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