US3752349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible container
Assignee: FLEXOGENICS Inc
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Filing: 1971-03-15
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Granted: 1973-08-14
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Expires: 1991-03-15
Abstract
Abstract A collapsible container in which the doors at opposite ends provide rigidity for the structure. Opposed walls of the container are hinged to fold inwardly between the other walls, the doors folding back against the outside of the structure. In the erected position the doors have plug portions which fit closely into the ends of the box structure and maintain the alignment and rigidity of the walls. The hinges used in the structure are sealed on both sides to make the container weatherproof.
Inventors
- 👤 S Rana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/52; B65D88/522; B65D88/524; B65D7/00; B65D7/12; B65D7/24; B65D7/26; E; E04; E04H; E04H6/00; E04H6/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A collapsible container, comprising: a box-like structure having opposed walls hinged to fold inwardly between the other walls; doors hinged to the ends of said structure, said doors each having a plug fitting closely into the respective end of the structure and providing a rigid support between the walls, said opposed walls each comprises a pair of panel elements with a connecting hinge therebetween, the outer edges of said panel elements having hinged connections to said other walls parallel to said connecting hinge, all of said hinges have weatherproof sealing means therein, said sealing means includes an inner membrane and an outer membrane enclosing each hinge for the full length of the hinged connection, and each of said inner membranes has a loop portion extending the full length of the hinged connection, the adjacent structure having a channel to contain said loop portion.
Claim 2
Dependent Claim
143 words
A collapsible container, comprising: a box-like structure having opposed walls hinged to fold inwardly between the other walls; doors hinged to the ends of said structure, said doors each having a plug fitting closely into the respective end of the structure and providing a rigid support between the walls, said opposed walls each comprises a pair of panel elements with a connecting hinge therebetween, the outer edges of said panel elements having hinged connections to said other walls parallel to said connecting hinge, all of said hinges have weatherproof sealing means therein, said sealing means includes an inner membrane and an outer membrane enclosing each hinge for the full length of the hinged connection, and each of said inner membranes has a loop portion extending the full length of the hinged connection, the adjacent structure having a channel to contain said loop portion.
Claim 3
Dependent Claim
23 words
A collapsible container according to claim 1, wherein said doors are hinged to said other walls to swing back against the outside thereof.
Claim 4
Dependent Claim
39 words
A collapsible container according to claim 1, wherein said box-like structure has side walls, a top wall panel and a bottom wall panel; said side walls having feet extending below said bottom wall panel, with openings between the feet.
Claim 5
Dependent Claim
41 words
A collapsible container according to claim 1, wherein said box-like structure has side walls, a top wall panel and a bottom wall panel; said top and bottom walls panels being hinged to fold downwardly and upwardly, respectively, between the side walls.
Claim 6
Dependent Claim
22 words
A collapsible container according to claim 4, wherein said side walls are rigid, and said doors are hinged to the side walls.
Claim 7
Dependent Claim
35 words
A collapsible container according to claim 5, wherein each of said doors has a retaining bar spaced below said plug and defining a channel therebetween to receive and support the end of said bottom panel.
Claim 8
Dependent Claim
41 words
A collapsible container according to claim 1, wherein said box-like structure has side walls, a top wall panel and a bottom wall panel; said top and bottom wall panels being rigid and said side walls being hinged to fold inwardly therebetween.
Claim 9
Dependent Claim
27 words
A collapsible container according to claim 7, wherein said doors are hinged to said top wall panel to swing upwardly and back against the top wall panel.
Claim 10
Dependent Claim
31 words
A collapsible container according to claim 1, and including locking means on the ends of said panel elements at the hinged connection thereof for holding the panel elements in planar alignment.
Claim 11
Dependent Claim
19 words
A collapsible container according to claim 1, and including sealing means around the periphery of each of said doors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |