Open-top stacking carton and blank therefor

Claim 2

A crate-like carton having a mostly-open top and two partlyopen ends and enabling withdrawal of contents through said top and having closed bottom and side walls, said carton being made from a single continuous generally rectangular blank of corrugated board, having fold lines and cuts, comprising a bottom wall, vertical side walls hinged to said bottom wall, a top reinforcing horizontal wall portion hinged along the top edge of each said side wall and parallel to said bottom wall, a series of flaps on each said end, each hinged to the same fold line and each extending to a flap edge, the maximum distance of any point along each said flap edge from said fold line on that end being the same, said flap edge lying at a median distance from said fold line equal to half the height of the side walls, said median distance being substantially less than half the width of said bottom wall between said side walls, and comprising front and rear vertical flaps hinged to said bottom wall, each having its corners cut diagonally, a front side flap and a rear side flap hinged to each of said side walls, each vertical and secured respectively to and flat against said front and rear vertical flaps to define the full height of front and rear vertical end walls of the carton, there being a substantial gap between said side flaps on each end, each said front and rear side flap being wider than said top-wall portions, anD a depending flap hinged at each end of said said top-wall portion and terminating in a diagonal edge matching the diagonal cuts on said front and rear flaps and secured to and flat against said front and rear side flaps terminating there with their diagonal edges in abutment with the diagonal cuts of said front and rear flaps, and increasing the stacking strength of said carton.

Claim 3

A crate-like carton having a mostly-open top and partly-open end walls and closed bottom and side walls, all made from a single, continuous, generally rectangular blank of corrugated board, comprising a bottom wall, two side walls hinged to opposite sides of said bottom wall for the full front-to-rear distance thereof, a front side flap and a rear side flap, both hinged to each of said side walls, each at one end thereof, for the full height thereof and each having a bottom edge resting on the bottom wall, each said side flap having an horizontal top edge and a vertical end edge, said side flaps for at least one end having a width along said bottom and top edges substantially less than one-half of the width of said bottom wall between said side flaps, front and rear flaps hinged to opposite ends of said bottom wall for the full side distance thereof, each splayed at its free corners to provide two diagonal portions, each having a maximum height equal to the width of said front and rear side flaps, and each having a median height no greater than half the height of said side walls and each secured to two said side flaps, a top reinforcing wall portion hinged along the top edge of each said side wall along a line lying parallel to and distant from the hinge line of said side wall to said bottom wall, each said top wall portion being narrower than the width of said front and rear side flaps along their top and bottom edges and folded to lie horizontally above said bottom wall, and a depending flap at each end of each said top wall portion and the same width as said top wall portion and the same maximum length as the width of said side flaps along their top and bottom edges, and terminating in a diagonal edge matching the diagonal edge of said front and rear flaps, said depending flaps being secured to said front and rear side flaps above and abutting the diagonal edges of said front and rear flaps respectively.

Claim 4

A crate-like carton having a mostly-open top and partly-open end walls and closed bottom and side walls, all made from a single, continuous, generally rectangular blank of corrugated board, comprising a bottom wall, two side walls hinged to opposite sides of said bottom wall for the full front-to-rear distance thereof, a front side flap and a rear side flap, both hinged to each of said side walls, each at one end thereof, for the full height thereof and each having a bottom edge resting on the bottom wall, each said side flap having an horizontal top edge and a vertical end edge, said side flaps for at least one end having a width along said bottom and top edges substantially less than one-half of the width of said bottom wall between said side flaps, front and rear flaps hinged to opposite ends of said bottom wall for the full side distance thereof, each splayed at its free corners to provide two diagonal portions, each having a maximum height equal to the width of said front and rear side flaps, and each having a median height no greater than half the height of said side walls and each secured to two said side flaps, a top reinforcing wall portion hinged along the top edge of each said side wall along a line lying parallel to and distant from the hinge line of said side wall to said bottom wall, each said top wall portion being narrower than the width of said front and rear side flaps along their top and bottom edges and folded to lie horizontally above said bottom wall, and a depending flap at each end of each said top wall portion and the same width as said top wall portion and the same maximum length as the width of said side flaps along their top and bottom edges, and terminating in a diagonal edge matching the diagonal edge of said front and rear flaps, said depending flaps being secured to said front and rear side flaps above and abutting the diagonal edges of said front and rear flaps respectively.

Claim 5

A carton blank, comprising a generally rectangular sheet of corrugated board having two parallel lengthwise fold lines and four widthwise fold lines parallel to each other and perpendicular to and between said lengthwise fold lines, and cuts in line with each said widthwise fold line and extending from each said lengthwise fold line to its adjacent widthwise edge, said fold lines and cuts thereby defining a rectangular bottom wall portion centrally located between the edges of said sheet, two rectangular side wall portions each hinged to said bottom wall portion along a widthwise fold line, two rectangular top wall portions each hinged to a said side wall portion along a widthwise fold line and terminating in a widthwise edge, a front flap and a rear flap, each between two said cuts and joined by a said lengthwise fold line to said bottom portion, two rectangular front and rear side flaps, each between two said cuts and joined to a said side wall portion by a said lengthwise fold line, and extending to a lengthwise edge, two front and rear final flaps each joined to a said top wall portion by a said lengthwise fold line and each terminating in a diagonal edge which at its farthest from said lengthwise fold line lies at the same distance from said lengthwise fold line as the lengthwise edge of its adjacent side flap, each of said front flap and rear flap having a lengthwise edge portion collinear with said lengthwise edge of its adjacent side flaps and splayed at the corners to provide two diagonal portions parallel to the diagonal edges of the closer said final flap, the distance between each said lengthwIse fold line and the lengthwise edge of said side flaps being substantially less than half the width of said bottom wall portion along a said lengthwise fold line, the distance between each said lengthwise fold line and the median of each said diagonal edge, and the distance between each said lengthwise fold line and the median of each said diagonal portion being one-half the width of each said side wall portion along a said lengthwise fold line, the distance between each said widthwise edge and its adjacent widthwise fold line, being less than the distance between a said lengthwise fold line and the lengthwise edge of its said side flap.

Claim 6

A carton blank, comprising a generally rectangular sheet of corrugated board having two parallel lengthwise fold lines and four widthwise fold lines parallel to each other and perpendicular to and between said lengthwise fold lines, and cuts in line with each said widthwise fold line and extending from each said lengthwise fold line to its adjacent widthwise edge, said fold lines and cuts thereby defining a rectangular bottom wall portion centrally located between the edges of said sheet, two rectangular side wall portions each hinged to said bottom wall portion along a widthwise fold line, two rectangular top wall portions each hinged to a said side wall portion along a widthwise fold line and terminating in a widthwise edge, a front flap and a rear flap, each between two said cuts and joined by a said lengthwise fold line to said bottom portion, two rectangular front and rear side flaps, each between two said cuts and joined to a said side wall portion by a said lengthwise fold line, and extending to a lengthwise edge, two front and rear final flaps each joined to a said top wall portion by a said lengthwise fold line and each terminating in a diagonal edge which at its farthest from said lengthwise fold line lies at the same distance from said lengthwise fold line as the lengthwise edge of its adjacent side flap, each of said front flap and rear flap having a lengthwise edge portion collinear with said lengthwise edge of its adjacent side flaps and splayed at the corners to provide two diagonal portions parallel to the diagonal edges of the closer said final flap, the distance between each said lengthwIse fold line and the lengthwise edge of said side flaps being substantially less than half the width of said bottom wall portion along a said lengthwise fold line, the distance between each said lengthwise fold line and the median of each said diagonal edge, and the distance between each said lengthwise fold line and the median of each said diagonal portion being one-half the width of each said side wall portion along a said lengthwise fold line, the distance between each said widthwise edge and its adjacent widthwise fold line, being less than the distance between a said lengthwise fold line and the lengthwise edge of its said side flap.