Self-opening tong lifting device
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United States of America Patent
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Mar 9, 2010
Grant Date -
Sep 14, 2006
app pub date -
Mar 10, 2006
filing date -
Mar 11, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tong device for lifting various types and sizes of objects is disclosed. The tong lifting device includes tongs pivotally mounted on a slide rod which is extendable from a lift sleeve. Each tong has an attachment engaging end and an arm extending away from the attachment engaging end. Linkages are pivotally attached to the arms of the tongs, and are pivotally attached to a sliding lobe which travels along the length of the lift sleeve. The design of the lifting device provides a self-opening mode of operation and can be reconfigured in the field for optimum performance.
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