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Carton end closure and reinforcing construction
| Details |
Inventors: Rice, Clifford Brant; Mastroianni, David Paul;
Assignee: Rice Packaging Inc. (Ellington, CT)
Primary Examiner: Moorhead; Davis T.
Assistant Examiner:
Attorney, Agent or Firm: Ross; Kenwood, Flavin; Chester E.
In a carton of the type wherein a supplemental reinforcing panel is disposed within the carton immediately rearwardly of the front panel, with the supplemental reinforcing panel being hingedly connected to a first bottom dust flap which is hinged to one of the carton side panels, and a second bottom dust flap is hinged to the other of the carton side panels, locking shoulders are provided on the bottom dust panels for engagement with locking slots on the carton bottom panel, thereby providing a double lock for the bottom panel to create a stronger box closure. |
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DETAILED DESCRIPTION I claim: 1.
In a carton of the type comprising spaced front, rear and side panels, wherein a supplemental reinforcing panel is disposed within the carton immediately rearwardly of the front panel, with the supplemental reinforcing panel being hingedly connected to a first bottom dust flap which is hinged to one of the side panels, and a second bottom dust flap is hinged to the other of the side panels, and a bottom panel is hinged to the rear panel, the improvement which comprises, locking shoulders on the bottom dust panels and locking slots on the bottom panel, the locking shoulders being engageable with the locking slots for providing a double interlock on carton erection.
2.
A carton according to claim 1, wherein the locking tongue on one bottom dust panel is defined by a pair of right-angularly disposed slits in the panel.
Description:
Cartons having a reinforcing interior supplemental panel are used for packing such as nails, screws and the like.
In prior art cartons of the type wherein a reinforcing interior supplemental panel is employed, poor bottom panel locking is prevalent for the reason that the flap connecting the supplemental panel to the carton side panel makes it impossible to obtain any locking along one side of the bottom panel, thus making for a poor carton.
Accordingly, a primary object of the invention is to provide a double locking feature for the bottom panel of a carton having a supplemental reinforcing panel, thereby forming a more square box with both locks engaged to increase strength and durability.
In the drawings: FIG.
1 is a top plan view of a blank for forming a carton of the prior art; FIG.
2 is a top plan view of a blank for forming a carton of the invention; FIG.
3 is a front elevational view of a carton erected from the blank of FIG.
2; FIG.
4 is a side elevational view of the carton of FIG.
3; FIG.
5 is a top plan view of the carton of FIG.
3; FIG.
6 is a bottom plan view of the carton of FIG.
3 with the bottom panel and tuck flap in an opened position; FIG
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Heat Accumulators 
