Patent ID: 7181892
Filing Date: 2007-02-27
Classification: B67B

Abstract:
1. A capping head assembly comprising: (I) a first housing assembly securable to a drive spindle, said first housing assembly having an outside surface and said first housing assembly having a top portion, a middle portion, and a lower portion; (II) a spring retention plate surmounting the first housing assembly; (III) a compression spring mounted beneath the spring retention plate and surrounding the first housing assembly, said spring slidably resting on a movable adjustment ring that is threadedly mounted around the middle portion of the first housing assembly; (IV) a magnetic clutch assembly having an upper portion and a bottom edge and comprising: (V) a means for adjusting the position of the second annular drive magnet relative to said magnetic clutch assembly, said means comprising a torque adjustment rotating end cap, that changes the polarity of the second annular magnet in the magnetic clutch assembly relative to the first annular drive magnet in a predetermined position whereby the flux of the magnets can be changed to vary the torque limit of said magnetic clutch assembly, said torque adjustment rotating end cap being rotatably mounted in the bottom end of magnetic clutch assembly; (VI) a means for securing the second annular drive magnet relative to said magnetic clutch assembly to retain said second annular drive magnet in a fixed position; (VII) a double row angular contact thrust bearing located in the upper portion of the magnetic clutch assembly and encircling the rotatable drive member, said double row angular contact thrust bearing surmounting the annular series of magnets.