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US3853221A Expired / Lapsed US ⏱️ 0.0 years remaining

Pad for cushion packing fragile artilces

Assignee: Packaging Corp of America
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Filing: 1973-04-12
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Granted: 1974-12-10
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Expires: 1993-04-12
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Abstract

Abstract A pad formed of resilient compressible material is provided for use in cushion packing a plurality of fragile articles disposed in laterally spaced relation within a container. The pad, which may be used either above or beneath the articles disposed in the container, is provided with a plurality of compressible hollow projections. Where the pad overlies the articles, the hollow projections thereof extend downwardly from a predetermined plane of the pad and are adapted to resiliently engage the articles disposed therebeneath when the container, in which the articles and pad are placed, is closed. The resilient contact between the pad projections and the articles prevents relative movement of the articles within the closed container during normal handling of the latter. When there is resilient contact between a projection and an article disposed therebeneath, the projection will be distorted or compressed in a controlled manner along one or more lines of flexure.

Inventors

  • 👤 J Boyd

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 23:26
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/34; B65D1/36; B65D81/00; B65D81/02; B65D81/05; B65D81/127; B65D81/133

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 251 words
A pad of soft, resiliently compressible material for use in cushion packing fragile articles disposed within a container wherein the articles form a top layer within the container and are arranged in laterally spaced relation; said pad being positionable within the container and interposed the top layer of articles and a closure for the container, the peripheral shape of said pad approximating the area delimited by the container side walls, said pad comprising a plurality of laterally spaced, hollow projections depending a like amount from a predetermined plane of the pad and resiliently engaging each of the articles forming the top layer, each projection including a base portion having the undersurface thereof adapted to engage an article disposed therebeneath and forming the top layer, and an inwardly tapered wall interconnecting the periphery of the base portion with the predetermined plane of the pad, said wall having an exterior surface provided with a first line of flexure arranged in substantially encompassing relation with respect to said base portion and spaced therefrom, and an interior surface provided with a second line of flexure arranged in substantially encompassing relation with respect to said base portion and spaced a different amount therefrom than said first line of flexure whereby controlled flexure of said wall occurs about said lines of flexure upon said base portion being distorted by an article engaging said base portion; the portions of said projection wall ajacent said lines of flexure being resiliently compressed when controlled flexure of the projection wall occurs.
Claim 2
Dependent Claim 251 words
A pad of soft, resiliently compressible material for use in cushion packing fragile articles disposed within a container wherein the articles form a top layer within the container and are arranged in laterally spaced relation; said pad being positionable within the container and interposed the top layer of articles and a closure for the container, the peripheral shape of said pad approximating the area delimited by the container side walls, said pad comprising a plurality of laterally spaced, hollow projections depending a like amount from a predetermined plane of the pad and resiliently engaging each of the articles forming the top layer, each projection including a base portion having the undersurface thereof adapted to engage an article disposed therebeneath and forming the top layer, and an inwardly tapered wall interconnecting the periphery of the base portion with the predetermined plane of the pad, said wall having an exterior surface provided with a first line of flexure arranged in substantially encompassing relation with respect to said base portion and spaced therefrom, and an interior surface provided with a second line of flexure arranged in substantially encompassing relation with respect to said base portion and spaced a different amount therefrom than said first line of flexure whereby controlled flexure of said wall occurs about said lines of flexure upon said base portion being distorted by an article engaging said base portion; the portions of said projection wall ajacent said lines of flexure being resiliently compressed when controlled flexure of the projection wall occurs.
Claim 3
Dependent Claim 17 words
The pad of claim 1 wherein the resiliently compressible material of said pad comprises a foam plastic.
Claim 4
Dependent Claim 18 words
The pad of claim 1 wherein each of predetermined lines of flexure has a continuous substantially ring-like configuration.
Claim 5
Dependent Claim 59 words
The pad of claim 1 wherein the exterior surface of each projection wall is provided with a plurality of spaced concentrically arranged first lines of flexure, and the interior surface of each projection wall is provided with a plurality of spaced, concentrically arranged second lines of flexure; corresponding first and second lines of flexure being arranged in staggered relation.
Claim 6
Dependent Claim 43 words
The pad of claim 1 wherein the base portion of each projection is provided with an upwardly extending hollow protuberance; the extent to which each protuberance extends upwardly being less than the amount each projection depends from the predetermined plane of said pad.
Claim 7
Dependent Claim 16 words
The pad of claim 1 wherein each of predetermined lines of flexure has a helical configuration.
Claim 8
Dependent Claim 18 words
The pad of claim 1 wherein each of predetermined lines of flexure has a noncontinuous substantially ringlike configuration.
Claim 9
Dependent Claim 30 words
The pad of claim 1 wherein the plurality of projections are arranged in a plurality of substantially parallel rows and the projections in adjacent rows being arranged in staggered relation.
Claim 10
Dependent Claim 117 words
The pad of claim 1 wherein a plurality of first hollow projections depend from said predetermined plane and a plurality of second hollow projectIons extend upwardly from said predetermined plane, said first and second projections being arranged in alternate relation; each projection being provided with an inwardly tapered wall delimiting a base portion, said wall having an exterior surface provided with a first line of flexure arranged in substantially encompassing relation with respect to the delimited base portion, and an interior surface provided with a second line of flexure arranged in substantially encompassing relation with respect to said delimited base portion, one of said lines of flexure being closer to said delimited base portion than the other.
Claim 11
Dependent Claim 29 words
The pad of claim 9 wherein the base portion of each projection has an elongated configuration and the longitudinal axes of said base portions are in substantially parallel relation.
Claim 12
Dependent Claim 24 words
The pad of claim 10 wherein the longitudinal axes of said base portions are diagonally disposed relative to the peripheral edges of said pad.

References Cited (Backward Citations)

US2371271A Cited
US2032373A Cited
US2175559A Cited
US2652696A Cited
US3018015A Cited
US3052347A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-09 1978-06-10 1978-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-09 1982-06-10 1982-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-09 1986-06-10 1986-12-10 $7700.00 Window Closed / Lapsed

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