Payload-protecting shipping container

Claim 2

In a shipping container for protection of a payload from shock loading comprising: an outer rectangular box having at least one open but closable end; a rectangular resilient bottom cap abutting a closed end of said outer box; a first rectangular resilient block abuttingly mounted on said cap and having a central aperture to support one end of an inserted payload, said first block having a height sufficient to support said one end of an inserted payload, and said first block having length and width dimensions corresponding to the internal length and width of said outer box; a second rectangular resilient block having a central aperture to support a second end of said inserted payload, said second block having a height sufficient to support said second end of said inserted payload, said second block having length and width dimensions corresponding to the internal length and width of said outer box; and a rectangular resilient top cap abutting a top surface of said second block and having a top surface in a plane corresponding to the closable end of the outer box in closed position, the improvement comprising: means for adhering only selected edge portions outwardly spaced from said central apertures in each of said blocks to corresponding portions of the bottom and top caps abutting each of said blocks leaving unadhered portions for stress relieving said blocks upon imposition of a force.

Claim 3

The invention as set forth in claim 1 further including means for forming slits in said blocks extending into said blocks from said apertures.

Claim 4

The invention as set forth in claim 2 in which the payload-supporting apertures are rectangular with unequal length sides and said slits extend at an angle from each of the corners of said apertures.

Claim 5

The invention as set forth in claim 2 in which the payload-support apertures are square and said slits bisect an angle with each of the corners of said apertures.

Claim 6

The invention as set forth in claim 3 in which said slits which extend from the corners of said aperture at an angle extending in a direction away from the wall supporting the parallel short sided edges of said apertures to increase stiffness of said short sides.

Claim 7

The invention as set forth in claim 5 in which said angle is from about 5° to about 15° and said slits equalize the area of said outer rectangular box supporting the unequal sides of the aperture.

Claim 8

The invention as set forth in claim 1 in which said caps are of duplicate configuration and said blocks are of duplicative configuration and wherein a partially adhesively bonded cap-block combination is inserted as a unit into said outer box.

Claim 9

The invention as set forth in claim 1 in which payload-supporting apertures are rectangular with unequal length sides and said adhesively bonded edge portions extend from a position outboard of said apertures to a position inboard of the outer edges of said caps and blocks and extend along the larger of the unequal sides of said apertures.

Claim 10

The invention as set forth in claim 1 in which said means for adhering comprises bands of adhesive extending from a position outboard of said apertures to a position inboard of the outer edges of said caps and blocks.

Claim 11

In a shipping container for protection of a payload from shock loading comprising: an outer rectangular box having at least one open but closable end; a rectangular resilient bottom cap abutting a closed end of said outer box; a first rectangular resilient block abuttingly mounted on said cap and having a central aperture to support one end of an inserted payload, said first block having a height sufficient to support said one end of an inserted payload, and said first block having length and width dimensions corresponding to the internal length and width of said outer box; a second rectangular resilient block having a central aperture to support a second end of said inserted payload, said second block having a height sufficient to support said second end of said inserted payload, said second block having length and width dimensions corresponding to the internal length and width of said outer box; and a rectangular resilient top cap abutting a top surface of said second block and having a top surface in a plane corresponding to the closable end of the outer box in closed position, the improvement comprising: means for forming slits in said first and second blocks extending into said blocks at an angle from each of the corners of said apertures for stress relieving said blocks upon the imposition of a force, where said stress relieving occurs near the corners of said apertures as the sides of said slits are forced to separate.

Claim 12

In a shipping container for protection of a payload from shock loading comprising: an outer rectangular box having at least one open but closable end; a rectangular resilient bottom cap abutting a closed end of said outer box; a first rectangular resilient block abuttingly mounted on said cap and having a central aperture to support one end of an inserted payload, said first block having a height sufficient to support said one end of an inserted payload, and said first block having length and width dimensions corresponding to the internal length and width of said outer box; a second rectangular resilient block having a central aperture to support a second end of said inserted payload, said second block having a height sufficient to support said second end of said inserted payload, said second block having length and width dimensions corresponding to the internal length and width of said outer box; and a rectangular resilient top cap abutting a top surface of said second block and having a top surface in a plane corresponding to the closable end of the outer box in closed position, the improvement comprising: means for forming slits in said first and second blocks extending into said blocks at an angle from each of the corners of said apertures for stress relieving said blocks upon the imposition of a force, where said stress relieving occurs near the corners of said apertures as the sides of said slits are forced to separate.

Claim 13

The invention as set forth in claim 10 in which said apertures are rectangular.

Claim 14

The invention as set forth in claim 11 in which the adjacent sides of said rectangular apertures are unequal in length and said slits more equalize loading support of the shorter sides to that of the larger sides when said box is subjected to shock loading on said shorter sides.

Claim 15

The invention as set forth in claim 12 in which the angle of said slits extending from the corners of said aperture away from the wall supporting said short sides of the aperture is about 5° to about 15°.

Claim 16

The invention as set forth in claim 10 in which said apertures are square and the angle of said slits is 45°.

Claim 17

The invention as set forth in claim 10 in which said angle is selected to equalize compressive stiffness of the resilient blocks supporting dissimilar lengths of different sides of said apertures and to resist tearing of the resilient blocks near the corners of said apertures.

Claim 18

A resilient cap abutting an end of an outer box; a resilient block abuttingly mounted on said cap and having a central aperture to support one end of an inserted payload, said block having a height sufficient to support said one end of an inserted payload; including means for adhering only selected edge portions outwardly spaced from said central aperture in said block to corresponding portions of the cap abutting said block leaving unadhered portions for stress relieving said block and cap upon imposition of a force, and further including means for forming slits in said block extending into said block from the corners of said aperture in a direction away from the edges of said aperture for stress relieving said block upon imposition of a force.

Claim 19

A resilient cap abutting an end of an outer box; a resilient block abuttingly mounted on said cap and having a central aperture to support one end of an inserted payload, said block having a height sufficient to support said one end of an inserted payload; including means for adhering only selected edge portions outwardly spaced from said central aperture in said block to corresponding portions of the cap abutting said block leaving unadhered portions for stress relieving said block and cap upon imposition of a force, and further including means for forming slits in said block extending into said block from the corners of said aperture in a direction away from the edges of said aperture for stress relieving said block upon imposition of a force.