Wrap around sleeve for tapered tub

• US 4,451,001 A
• Filed: 07/28/1982
• Issued: 05/29/1984
• Est. Priority Date: 07/28/1982
• Status: Expired due to Fees

• Current Assignee: Waldorf Corp
• Original Assignee: Champion International Corporation (International Paper Company)
• Inventors: Webinger, George P.
• Primary Examiner(s): Dixson, Jr., William T.
• Assistant Examiner(s): Elkins, Gary E.
• Application Number:
  US06/402,775
• Time in Patent Office: 671 Days
• Field of Search: 229/30, 229/31 R, 229/40, 229/87 F, 229/31 FS, 206/434, 206/427, 206/140, 206/491
• US Class Current: 206/485.1
• CPC Class Codes: B65D 5/2047 trapezoidal, e.g. to form a body with diverging side walls B65D5/2033 takes precedence
• CPC Class Codes: B65D 5/2057 Inter-engaging self-locking flaps B65D5/4254 takes precedence
• CPC Class Codes: B65D 5/241 and the gussets folds connected to the inside of the container body B65D5/247 and B65D5/248 take precedence

Abstract

A sleeve is formed from sheet material, such as paperboard or the like, which sleeve is adapted to be wrapped about a tub having a tapered side wall. The sleeve is formed with two pairs of opposed side walls. One pair of the opposed side walls has the same taper as the wall of the tub and the other pair of opposed side walls is perpendicular to the top and bottom panels of the sleeve. The tub engages tuck flaps on the sleeve to hold the sleeve in place on the tub. The sleeved tubs can be stacked on their tops, bottoms, or on the perpendicular side walls.

Claims

1. A sleeve for encasing an article having a tapered side wall, said sleeve being formed from sheetstock material and comprising:

(a) a top wall having side edges;

(b) a pair of first side walls, one of each being foldably connected to opposite first side edges of said top wall, said first side walls tapering downwardly and inwardly from said first side edges of said top wall;

(c) a pair of second side walls, one of each being foldably connected to opposite second side edges of said top wall, said second side walls being substantially perpendicular to said top wall;

(d) a plurality of corner panels, one of each foldably interconnecting adjacent side edges of said first and second side walls, each of said corner panels being divided into a pair of associated tuck panels by a fold line, wherein C is an included angle between said fold line and a first fold connection between each of said corner panels and said first side walls;

D is an included angle between said fold line and a second fold connection between each of said corner panels and said second side walls;

A is an included angle between said first fold connection and a third fold connection between said first side walls and said top wall;

B is an included angle between said second fold connection and a fourth fold connection between said second side walls and said top wall; and

E is an included angle between said third and fourth fold connections;

wherein A+B+C+D+E=360°

; and

wherein A and B are equal and are equal to the acute angle of taper of the side wall of the article to be encased in the sleeve; and

wherein E equals 90°

; and

wherein C and D are determined by the following formuli;

##EQU2## said corner panels being folded along said fold line to position one of the tuck panels in each pair thereof in face-to-face contact with one of said first side walls whereby the perpendicularity of said second side walls is maintained; and

(e) a bottom wall interconnecting bottom edges of said first side walls.

2. A blank of sheetstock material for forming a sleeve, said blank comprising:

(a) a top wall panel having side edges;

(b) a pair of first trapezoidal side wall panels, said first side wall panels being connected to a first pair of opposite side edges of said top wall panel along the longer of the parallel edges of said first side wall panels by first fold lines;

(c) a pair of second trapezoidal side wall panels, said second side wall panels being connected to a second pair of opposite side edges of said top wall panel along the longer of the parallel edges of said second side wall panels by second fold lines;

(d) a plurality of corner panels, each of said corner panels being foldably connected to one side edge one of said first side wall panels along third fold lines, and foldably connected to one side edge of one of said second side wall panels along fourth fold lines, and said corner panels being divided into adjacent tuck panels by fifth fold lines, said first, second, third, fourth and fifth fold lines meeting at each corner of said top wall panel to form adjacent included angles A, B, C, D and E the sum of which included angles equals 360°

;

wherein A is the angle between said first and third fold lines, B is the angle between said second and fourth fold lines, C is the angle between said third and fifth fold lines, D is the angle between said fourth and fifth fold lines, and E is the angle between said first and second fold lines and and is a 90°

angle, and wherein A and B are equal known angles with angles C and D being determined by the following formuli;

##EQU3## (e) a bottom wall panel connected to one of said first side wall panels along a fold line corresponding to the shorter of the two parallel edges of said one of said first side wall panels, said bottom wall panel being shorter in length and width than said top wall panel.