Device for lifting and moving window frames
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 22, 2011
Grant Date -
Apr 2, 2009
app pub date -
Sep 28, 2007
filing date -
Sep 28, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Provided as a hoist system for installing a plurality of panels of a panel set onto a building structure at a jobsite. The hoist system comprises a beam assembly configured to hoist the panels and sequentially offload the panels from the beam assembly onto the building structure. The beam assembly comprises an elongate hoist beam, a lifting lug, a plurality of trolleys mounted on one of the opposing ends of hoist beam, and a drive mechanism operative to reposition the lifting lug along the hoist beam such that the hoist beams maintain a substantially horizontal or level orientation.
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Family
International Classification(s)
Cited Art Landscape
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