Closure apparatus incorporating a magnetic clutch for screwing-on a plastic screw closure
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United States of America Patent
Stats
-
Dec 21, 1982
Grant Date -
N/A
app pub date -
Apr 25, 1980
filing date -
Apr 25, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic clutch is provided for transmitting and limiting the torque in screw-on heads for screw closures. The clutch has a high number of poles (at least eight and preferably twelve poles) and the spacing between the clutch magnets, is at least six times the total axial tolerances between the clutch magnets.
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