Panel interlock

Details Panel interlock Panel interlock

1991-10-15

1992-07-21

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Miscellaneous joint construction

206427, 229 40, B65D 542

Patent

active

051315882

ABSTRACT:
For interlocking a pair of panels in overlapping face contacting relation, dual side by side locking tabs are struck from one panel and are arranged to be driven through side by side dual retaining apertures separated from each other by a reinforcing strut which is integrally connected at its ends with the other panel, the reinforcing strut being arranged to occupy the space between the dual retaining apertures.

REFERENCES:
patent: 2872036 (1959-02-01), Forrer
patent: 3224630 (1965-12-01), Spery
patent: 3410397 (1968-11-01), Cato
patent: 4077095 (1978-03-01), Oliff
patent: 4394903 (1983-07-01), Bakx
patent: 4440340 (1984-04-01), Bakx
patent: 5000313 (1991-03-01), Oliff

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