Sperical ball positioning apparatus for seamed limp material article assembly system
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United States of America Patent
Stats
-
Jun 6, 1989
Grant Date -
N/A
app pub date -
Mar 21, 1988
filing date -
Mar 21, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for controlling the position of a sheet member (e.g., fabric) slidingly supported on a work surface, utilizing a drive train consisting of one or more drive wheels frictionally engaging a spherical ball captively supported within a housing. The drive wheels are preferrably located in spaced, mutually orthogonal relation proximate the great circle of the spherical ball. The spherical ball rests on and frictionally engages the fabric-to-be-positioned. Rotation of one of the drive wheels causes the spherical ball to rotate which, in turn, moves the fabric in a direction dependent on the location and orientation of said one drive wheel. The inventor can be implemented as an active feedback system utilizing the above-described apparatus together with position detectors and a controller.
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