Apparatus for automatically locking L-slide lock cartons

Details Apparatus for automatically locking L-slide lock cartons Apparatus for automatically locking L-slide lock cartons

1986-07-01

1987-04-14

Coan, James F.

Package making

Closing packages and filled receptacles

By means adapted to engage outturned seam of package cover

493136, 493453, B65B 724

Patent

active

046568107

ABSTRACT:
Apparatus for locking a top of a case having an unlocked closing flap and L-slide lock slots for receiving opposite free end corners of the closing flap includes a closing flap securing device which provides a source of suction for detachably securing a top surface of a generally horizontal unlocked closing flap of a stationary case. Movement of the securing device from a generally horizontal position to a generally inclined position while secured to the closing flap first forms a longitudinal fold in the closing flap and positions the opposite free end corners of the closing flap adjacent respective L-slide lock slots. Subsequent movement of the securing device from the generally inclined position to the generally horizontal position then flattens the longitudinal fold and tucks the opposite free end corners of the closing flap into the respective L-slide lock slots to thereby lock the case. Suction from the closing flap securing device is then terminated to detach the securing device from the top surface of the closing flap of the case.

REFERENCES:
patent: 2277289 (1942-03-01), Bergstein et al.
patent: 2660012 (1953-11-01), Boyce et al.
patent: 3002432 (1961-10-01), Wendshuh
patent: 3960313 (1976-06-01), Sax et al.
patent: 4441303 (1984-04-01), Langen
patent: 4584818 (1986-04-01), Plaskett

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