Folding tub with automatic bottom

• US 3,912,331 A
• Filed: 04/11/1974
• Issued: 10/14/1975
• Est. Priority Date: 04/11/1974
• Status: Expired due to Term

• Current Assignee: Gary L. Gray, William E. Turner
• Original Assignee: Gary L. Gray, William E. Turner
• Inventors: Turner, William E., Gray, Gary L.
• Primary Examiner(s): Moorhead, Davis T.
• Application Number:
  US05/460,092
• Time in Patent Office: 551 Days
• Field of Search: 229/41R,41B,41C,41D,21
• US Class Current: 229/104
• CPC Class Codes: B65D 2543/00037 Disc closures
• CPC Class Codes: B65D 2543/00092 circular
• CPC Class Codes: B65D 2543/00268 Paper
• CPC Class Codes: B65D 2543/0049 on the inside, or a part turned to the inside of the mouth of the container
• CPC Class Codes: B65D 2543/00546 NO contact
• CPC Class Codes: B65D 2543/00648 Flange or lip
• CPC Class Codes: B65D 2543/00666 Hole
• CPC Class Codes: B65D 2543/00703 Dots
• CPC Class Codes: B65D 2543/00759 Flange or lip
• CPC Class Codes: B65D 2543/00814 Dots
• CPC Class Codes: B65D 3/06 essentially conical or frusto-conical
• CPC Class Codes: B65D 3/10 characterised by form of integral or permanently secured end closure
• CPC Class Codes: B65D 43/0204 secured by snapping over beads or projections
• CPC Class Codes: B65D 5/3614 to form a tubular body, at least one of the ends of the body remaining connected

Abstract

A tub is formed from a cut and scored blank of paperboard or the like and includes a first and second wall panels foldably joined with means for joining the panel at the distal ends thereof, so that a tub is defined when erected. A double thickness bottom for the erected tub is provided and comprises an outer bottom panel foldably joined to the first and second panels and folded medially thereof with an inner bottom panel foldably joined to the first wall panel, the outer bottom panel having a half portion joined to the inner bottom panel so that the inner and outer panels can be moved to bottom closing position when the tub is erected with both of the bottom panels extending between the wall panels, and being folded to a position between the wall panels when the tub is in its collapsed condition.

Claims

1. A cut and scored unitary paperboard blank for forming a tub adapted to be shipped in a collapsed condition, said blank comprising:

a. first and second major panels joined along a fold line;

b. a glue flap foldably connected to one or said panels along another fold line;

c. flanges foldably connected to the bottom edges of said panels and foldable thereagainst for stiffening said panels;

d. a first substantially circular panel foldably attached to the lower edge of one of said major panels for forming an inner bottom panel of a tub when the same is erected;

e. a second substantially circular panel foldably attached to the lower edge of the other of said major panels for forming an outer bottom panel of said tub;

f. said second circular panel having a fold line extending substantially medially thereof and dividing said panel into two substantially equal halves adapted to be folded against one another;

g. said first and second circular panels each having a pair of foldable ears hingedly attached thereto along the edges thereof and foldable into position between said flanges and said bottom edge of said major panels when said blank is erected into a tub.