Handling: hand and hoist-line implements – Utilizing fluid pressure – Venturi effect
Patent
1998-09-30
2000-06-20
Kramer, Dean J.
Handling: hand and hoist-line implements
Utilizing fluid pressure
Venturi effect
414627, B66C 102
Patent
active
06076872&
ABSTRACT:
The present invention relates to a vacuum manipulating device with a suction device, which can be connected via a lifting hose with a device generating a vacuum and which, for creating a suction on an object to be lifted or transported, can be placed on the latter. The suction device includes a control valve device with an opening which can be unblocked and blocked for controlling the vacuum prevailing in the interior of the suction device. The control valve device has a control element, which unblocks or blocks the opening and can be pivoted or rotated in the one or the other direction which, in the non-actuated state, takes up a settable neutral position with a degree of opening corresponding to the setting. In order to be able to set a defined poise, the device in accordance with the present invention is embodied such, that the control element is prestressed against a force-guided movable component in such a way that in the non-actuated state it rests against the latter with a detent area.
The movable component is prestressed against an adjustable positive stop, which defines the degree of opening in the neutral position, and rests against the positive stop in the neutral position and when the control element is deflected in one direction. When the control element is deflected in the other direction, with its detent area the control element moves the movable component away from the positive stop against its prestress.
REFERENCES:
patent: 2995359 (1961-08-01), Gulick
patent: 3743340 (1973-07-01), Williamann
patent: 5934723 (1999-08-01), Schmalz
Chin Paul J.
J. Schmalz GmbH
Kramer Dean J.
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