Wrapping apparatus
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United States of America Patent
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-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Dec 10, 1999
filing date -
Dec 11, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Wrapping apparatus for winding a web of wrapping foil (F) around an object (1). The wrapping apparatus comprises a ring guideway (2) defining a track of variable curvature and foil dispenser (6). The foil dispenser is provided with idler assemblies (10, 11) supporting the foil dispenser as it moves along the ring guideway. In the idler assembly, an inner idler (12) mounted with bearings on the foil dispenser frame (7) leans by its circumference on an inner rolling surface (3) of the guideway (2). A first outer idler (3) leans by its circumference on an outer rolling surface (4). A lateral idler (14) leans on a lateral rolling surface (5). The idler assembly comprises a second outer idler (15), which leans on the outer rolling surface (4) at a distance from the first outer idler (13). A pivoted frame (16) is mounted with bearings on the frame so that it can turn about a swing axis co-incident with the axis of rotation of the inner idler (12). The first outer idler (13), the second outer idler (15) and the lateral idler (14) are mounted with bearings on the pivoted frame (16).
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