COLLAPSIBLE BAG

• US 3,589,594 A
• Filed: 06/09/1969
• Issued: 06/29/1971
• Est. Priority Date: 06/07/1968
• Status: Expired due to Term

• Current Assignee: Fischlein Svend, Tragaardh Peter Karpf Jan K
• Original Assignee: Fischlein Svend, Tragaardh Peter Karpf Jan K
• Inventors: FISCHLEIN SVEND, TRAGAARDH PETER KARPF JAN K
• Application Number:
  US04/831,677
• Time in Patent Office: 750 Days
• US Class Current: 383/18
• CPC Class Codes: A45C 3/00 Flexible luggage; Handbags collapsible or extensible luggage, bags or the like A45C7/00
• CPC Class Codes: B65D 5/46016 Straps used as handles fixed to the container by glueing, stapling, heat-sealing for packages in wrappers B65D75/56
• CPC Class Codes: Y10S 229/914 Basket-type with handle

Abstract

The invention provides a collapsible bag comprising a prismatic, tubular body having hingedly connected wall panels so as to be collapsible to flat condition, and hinged flaps at the ends of the tube to constitute the bottom and the top of the bag, all parts being kept in interlocking relationship by means of a carrying strap introduced between the top flaps and the bottom flaps.

Claims

1. A foldable-flat bag comprising a cubical, tubular body including alternate pairs of side and end wall panels hingedly connected at lateral edges for forming a tubular body when erected:

rectangular lid and bottom closure flaps hingedly connected to respective upper and lower marginal edges of said sidewall panels for overlapping each other at their free edges when the bag is erected and the lid or bottom is closed;

said closure flaps having lateral hinge margins coincident with the lateral marginal edges of said sidewall panels therebeneath;

sleeve-forming channels comprising segments hingedly connected to respective upper and lower marginal edges of said end wall panels;

said sleeve-forming channels comprising pairs of segments hingedly connected at one edge to the lateral hinge margins of said rectangular lid and bottom closure flaps;

said pairs of segments converging at hinge lines bordering an intermediate segment hinged to the respective upper and lower edges of said end wall panels;

said segments forming a flat, open-ended channel when juxtaposed and said lid or bottom closure flaps are in a closed position; and

a strap threaded through said open-ended channels between said juxtaposed segments.

2. The structure as claimed in claim 1, in which said pairs of segments are triangular and said intermediate segment is trapezoidal.

3. The structure as claimed in claim 1, wherein said strap is threaded within said bag and along the inner surface of said end walls, and said strap extending through said channels flanking the bottom closure flap and being disposed exteriorly and juxtaposed beneath said bottom closure flaps.

4. The structure as claimed in claim 1, in which the end wall panels include a slot intermediate of the upper and lower maRginal edges, said strap being threaded through said slots.

5. The structure as claimed in claim 4, in which said strap extends vertically on the outer surface on said end walls.