Screw-capping device

Details Screw-capping device Screw-capping device

1979-03-23

1980-09-16

Culver, Horace M.

Package making

Closing packages and filled receptacles

Separate closure applying

B67B 320, B65B 728

Patent

active

042222150

ABSTRACT:
A device for screw-tightening caps on containers such as bottles has a cap chuck head for grasping and holding each cap with holding pawls, a driving shaft, and a friction clutch mechanism constructed separately from the chuck head but mechanically coupling the driving shaft and the chuck head to transmit rotational power to the chuck head at torques below a predetermined maximum torque, at which the cap is screw tightened, friction plates of the clutch mechanism slipping at any higher torque to prevent excessive tightening. The separate construction of the clutch mechanism and the chuck head prevents subsequent engagement of the clutch plates due to reaction forces arising during the screw-tightening operation, thereby preventing excessive tightening.

REFERENCES:
patent: 2839883 (1958-06-01), Roberts et al.
patent: 3031822 (1962-05-01), Dimond
patent: 3491516 (1970-01-01), Bergeron
patent: 3913301 (1975-10-01), Keller et al.
patent: 3955341 (1976-05-01), Wilhere

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