Patent US4010865A successfully refreshed from Google Patents.
US4010865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible insulated box
Assignee: Individual
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Filing: 1974-11-11
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Granted: 1977-03-08
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Expires: 1994-11-11
Abstract
Abstract Various container configurations are disclosed which can be collapsed for storage or shipment when empty and which are readily assembled into sturdy, airtight, and waterproof low-heat-transfer shipping handling or storage containers. Rigid urethane foam is molded to an outer liner in one embodiment and a sealing arrangement such as flexible bead between mating surfaces is disclosed along with other methods for effecting a seal.
Inventors
- 👤 James L. Wilgus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:24
CPC Classifications
B; B65; B65D; B65D11/00; B65D11/18; B65D11/1833; B65D1/00; B65D1/22; B65D1/225; B65D81/00; B65D81/38; B65D81/3813; B65D81/3816
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A multi-sided collapsible insulated container comprising a liner composed of a semirigid flexible material segmented into a plurality of contiguous rectangular sections, rigid insulating rectangular panels formed adhering to corresponding sections of said liner by expansion of a rigid urethane foam in a mold having truncated pyramidially-shaped sections corresponding to each of said liner sections, said liner sections combined with said molded urethane foam panels being substantially rigid, each of said molded panels having a truncated pyramid-shaped cellular structure exhibiting a low heat transfer function, adjacent mating side surfaces of each panel being initially molded at an angle of at least 46° with respect to the plane of said liner onto which said panel is formed so as to conform and seal said mating side surfaces by a crushing contact of said mating sides when said container is initially formed.
Claim 2
Dependent Claim
140 words
A multi-sided collapsible insulated container comprising a liner composed of a semirigid flexible material segmented into a plurality of contiguous rectangular sections, rigid insulating rectangular panels formed adhering to corresponding sections of said liner by expansion of a rigid urethane foam in a mold having truncated pyramidially-shaped sections corresponding to each of said liner sections, said liner sections combined with said molded urethane foam panels being substantially rigid, each of said molded panels having a truncated pyramid-shaped cellular structure exhibiting a low heat transfer function, adjacent mating side surfaces of each panel being initially molded at an angle of at least 46° with respect to the plane of said liner onto which said panel is formed so as to conform and seal said mating side surfaces by a crushing contact of said mating sides when said container is initially formed.
Claim 3
Dependent Claim
62 words
The invention of claim 1 further including a separate top closure for said container when assembled comprising a liner to which is molded a urethane foam truncated pyramidially-shaped lid section with side surfaces mating those of the assembled container, and said lid section side surfaces upon initial contact with said assembled container makes a crushing contact to seal and insulate said container.
Claim 4
Dependent Claim
26 words
The invention set for in claim 2 further including a flexible bead adapted to be sandwiched between contacting adjacent side surfaces to seal the joined surfaces.
References Cited (Backward Citations)
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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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |