Paperboard panel substitute for lumber

Claim 2

In a paperboard panel having a core of a plurality of layers of corrugated paperboard and a solid paperboard sheet secured to said core, an apertured portion through said panel for receiving a fastening member for attachment to an object, said apertured portion including an enlarged opening in a corrugated layer adjacent said sheet communicating with a smaller opening to provide a shoulder, a knockout section in said sheet which when the fastening member is cinched to said object is displaced onto said shoulder by a head on the fastening member, and the displaced knockout section provides a washer and forms a countersunk recess for the head.

Claim 3

The paperboard panel of claim 1 wherein each side face of the core is adhesively bonded to a solid fiber paperboard sheet, and said knockout section is in one of said solid fiber sheets.

Claim 4

A connecting structure between an object, and a panel comprising a core of a plurality of layers of corrugated paperboard, a solid fiber paperboard sheet secured to said core, and an apertured portion through the panel, said apertured portion including an enlarged opening in a corrugated layer adjacent said sheet in communication with a smaller opening which provides a shoulder; a washer of material removed from said sheet in abutment with said shoulder; and a fastening member extending through said apertured portion and secured to said object, said fastening member having a head engaging said washer and which is positioned in a recess resulting from said material removed from said sheet.

Claim 5

A connecting structure between an object, and a panel comprising a core of a plurality of layers of corrugated paperboard, a solid fiber paperboard sheet secured to said core, and an apertured portion through the panel, said apertured portion including an enlarged opening in a corrugated layer adjacent said sheet in communication with a smaller opening which provides a shoulder; a washer of material removed from said sheet in abutment with said shoulder; and a fastening member extending through said apertured portion and secured to said object, said fastening member having a head engaging said washer and which is positioned in a recess resulting from said material removed from said sheet.

Claim 6

A substantially rigid paperboard skid for attachment to an appliance to support the same comprising an oblong shaped panel having an inner core of a plurality of layers of corrugated paperboard, an outer jacket of solid fiber paperboard enveloping said core and secured thereto, and having a plurality of apertured portions for receiving fastening members for attachment of the skid to said appliance, each apertured portion including a knockout section in a side face of the solid fiber jacket which when the fastening member is cinched to said appliance is displaced from said face by a head on the fastening member, and the displaced knockout section provides a washer which forms a countersunk recess for the head.

Claim 7

A substantially rigid paperboard skid for attachment to an appliance to support the same comprising an oblong shaped panel having an inner core of a plurality of layers of corrugated paperboard, an outer jacket of solid fiber paperboard enveloping said core and secured thereto, and having a plurality of apertured portions for receiving fastening members for attachment of the skid to said appliance, each apertured portion including a knockout section in a side face of the solid fiber jacket which when the fastening member is cinched to said appliance is displaced from said face by a head on the fastening member, and the displaced knockout section provides a washer which forms a countersunk recess for the head.

Claim 8

A substantially rigid paperboard skid for attachment to an appliance to support the same comprising an oblong shaped panel having an inner core of a plurality of layers of corrugated paperboard with adjacent faces in engagement with each other and terminating in flat side edges extending lengthwise of the skid, an outer jacket of substantially rigid and relatively non-flexible solid fiber paperboard enveloping said core and adhesively bonded thereto; said jacket being folded about said core along spaced apart fold lines providing flat edge panels substantially the thickness of the core substantially congruent with said flat side edges of the core, a full panel adhesively bonded to one side face of said core and partial panels adhesively bonded to the opposite side face of the core with their adjacent edges substantially abutting, and a plurality of spaced apart apertures extending through the skid between the ends thereof for receiving fastening members for attachment of the skid to the appliance.

Claim 9

A substantially rigid paperboard skid for attachment to an appliance to support the same comprising an oblong shaped panel having an inner core of a plurality of layers of corrugated paperboard with adjacent faces in engagement with each other and terminating in flat side edges extending lengthwise of the skid, an outer jacket of substantially rigid and relatively non-flexible solid fiber paperboard enveloping said core and adhesively bonded thereto; said jacket being folded about said core along spaced apart fold lines providing flat edge panels substantially the thickness of the core substantially congruent with said flat side edges of the core, a full panel adhesively bonded to one side face of said core and partial panels adhesively bonded to the opposite side face of the core with their adjacent edges substantially abutting, and a plurality of spaced apart apertures extending through the skid between the ends thereof for receiving fastening members for attachment of the skid to the appliance.

Claim 10

The skid of claim 5 wherein said solid fiber paperboard of the outer jacket is about 60 to 100 point in thickness weighing about 220 to 375 pounds per thousand square feet.

Claim 11

The skid of claim 5 wherein said corrugated paperboard comprises double wall corrugated paperboard having outer paper liners, a pair of corrugated mediums, and an intermediate lineR between said corrugated mediums; and said double wall corrugated paperboard is severed except through an outer liner to provide a hinge which is folded to form four layers of corrugated medium.

Claim 12

The skid of claim 5 wherein said solid fiber paperboard for the outer jacket is about 60 to 100 point in thickness weighing about 220 to 375 pounds per thousand square feet, and the ends of the skid are coated with moisture proofing material.