US4228912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container
Assignee: EPS Research and Development Ltd
•
Filing: 1978-12-11
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Granted: 1980-10-21
•
Expires: 1998-12-11
Abstract
Abstract A container is formed by locating two panels in a jig so that the two panels have their adjacent edges nearly touching, the panels being in perpendicular planes. A mould is provided at the adjacent edges of the panels, and a casting resin is introduced to the mould to secure the panels together. Two pairs of panels thus formed are joined together in a similar way to form the walls of a container, and a base and lid are also connected to the walls in a similar way. The casting resin is a cold curing casting resin which, when cured is flexible. The panels are thus interconnected by flexible joints. The container is resistant against damage when dropped.
Inventors
- 👤 Clifford E. Harris
- 👤 Norman B. Spary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:32
CPC Classifications
B; B65; B65D; B65D7/00; B65D7/12; B65D7/34; B65D7/38
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A packaging container comprising a base and a plurality of side walls upstanding from the base, the base and each respective side wall being formed from a substantially rigid panel, there being joints between the base and each side wall and between each side wall and each adjacent side wall, each said joint comprising a member of cold cured elastomer which has been cured in situ and which forms a flexible element securing the panels together to form a packaging container having waterproof and flexible shock resistant joints between the substantially rigid panels.
Claim 2
Dependent Claim
93 words
A packaging container comprising a base and a plurality of side walls upstanding from the base, the base and each respective side wall being formed from a substantially rigid panel, there being joints between the base and each side wall and between each side wall and each adjacent side wall, each said joint comprising a member of cold cured elastomer which has been cured in situ and which forms a flexible element securing the panels together to form a packaging container having waterproof and flexible shock resistant joints between the substantially rigid panels.
Claim 3
Dependent Claim
117 words
The packaging container of claim 1 produced by a method comprising the steps of locating a number of said substantially rigid panels in a jig so that the panels are in the relative positions they will occupy in the finished structure with the adjacent edges of the panels nearly touching, locating mould means adjacent to the nearly touching edges, introducing said cold-curing elastomer into said mould means in flowable form, curing said elastomer in situ into a flexible element securing said panels together to form a structure forming element having a waterproof and shockproof joint, and subsequently securing at least one further panel to said structure forming element to form said container having waterproof and shockproof corners.
Claim 4
Dependent Claim
51 words
A packaging container as defined in claim 2 wherein two panels are connected at right angles to each other, the two panels, when interconnected but before they are connected to other panels, being movable to have an included angle of at least 135° without damaging the flexible joint connecting the panels.
Claim 5
Dependent Claim
14 words
A packaging container as defined in claim 3 wherein said included angle is 180°.
Claim 6
Dependent Claim
71 words
A packaging container as defined in claim 2 wherein two structure forming elements, each comprising two connected panels, are connected together by a method comprising the steps of locating said structure forming elements with appropriate edges of panels nearly touching, locating mould means adjacent to said nearly touching edges, and introducing said casting resin into said mould means to secure said panels together, whereby said structure forming elements are secured together.
Claim 7
Dependent Claim
35 words
A packaging container as defined in claim 5 wherein the container comprises four side panels formed from two structure forming elements, each said structure forming element comprising two mutually perpendicular panels, and two further panels.
Claim 8
Dependent Claim
26 words
A packaging container as defined in claim 5 wherein the container comprises four side panels which constitute a single structure forming element and two further panels.
Claim 9
Dependent Claim
74 words
A packaging container as defined in claim 5 wherein said further panels are subsequently added to said structure forming elements by positioning each further panel in a predetermined position relative to said structure forming elements, locating mould means adjacent edges of each further panels which are nearly touching said structure forming element, and introducing said elastomer in flowable form into said mould means, whereby each further panel is secured to said structure forming element.
Claim 10
Dependent Claim
132 words
The packaging container of claim 1 produced by a method comprising the steps of locating a number of said substantially rigid panels in a jig so that the panels are in the relative positions that they will occupy in the finished structure with the adjacent edges of the panels nearly touching, locating mould means immediately next to said nearly touching edges, introducing said cold-curing elastomer into said mould means in flowable form, curing said elastomer in situ into a flexible element connecting said panels together to form a structure forming element havng a waterproof and shockproof joint, subsequently securing at least one further panel to said structure forming element to form a container having waterproof and shockproof corners, and separating the container into two sections by cutting at least one panel thereof.
Claim 11
Dependent Claim
25 words
A packaging container as defined in claim 9 wherein the free edges formed by cutting said at least one panel are provided with sealing members.
Claim 12
Dependent Claim
39 words
A packaging container as defined in claim 10 wherein sid sealing members are provided by locating mould means adjacent the free edges, introducing a cold-curing elastomer in flowable form to said mould means and curing said elastomer in situ.
Claim 13
Dependent Claim
133 words
The packaging container of claim 1 including a lid comprising a top, a number of side walls equal to the number of side walls in the container, said top and side walls of said lid each being formed from a substantially rigid panel, joint members between said top and side panels and between adjacent edges of the side panels of said lid, said joint members comprising a cold cured elastomer cured in situ to form a flexible, waterproof and shock resistant element securing the panels of said lid together, and interlocking seal members along the confronting edges of the side panels in the container and lid, said interlocking seal members also comprising a cold cured elastomer cured in situ to form a flexible, waterproof and shock resistant seal between said container and lid.
Claim 14
Dependent Claim
24 words
The packaging container of either claim 1 or 12 wherein said cold cured elastomer is a polyurethane formed from polyether polyol and an isocyanate.
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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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |