Grappler control system for a gantry crane
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 29, 2005
Grant Date -
N/A
app pub date -
Jul 9, 2002
filing date -
Jul 9, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and process are provided for controlling motion of a grappler of a gantry crane to avoid damaging an object to be lifted. In an embodiment, a speed of grappler movement is automatically reduced when in close proximity to the object. Furthermore, the grappler automatically stops when positioned appropriately to permit a latching mechanism to engage the object for lifting. Normal speed grappler motion is restored when the latching mechanism is fully engaged. In a particular embodiment, the grappler includes a plurality of height sensors at various positions along the grappler to determine the respective height of the grappler above a top of the object. Vertical motion of front and rear ends of the grappler are independently actuated and controlled to permit appropriate control when the grappler and/or the object are not level.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2002 Application Filing Year
- B66C Class
- 180 Applications Filed
- 65 Patents Issued To-Date
- 36.12 % Issued To-Date