US4572399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container having inwardly formed flange
Assignee: Individual
•
Filing: 1984-08-01
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Granted: 1986-02-25
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Expires: 2004-08-01
Abstract
Abstract A plastics container has a side wall and a rim portion moulded in one piece with the side wall. The rim portion is joined to the side wall by an integral hinge portion on which it can be folded inwardly of the container. Thereby a container having an inwardly projecting rim or retaining tabs can be readily produced as a one-piece moulding. Preferably, the side wall and rim portion are inwardly concave, whereby the rim portion can be held in its inwards position by forces caused by folding.
Inventors
- 👤 Erik Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:26
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/021; B65D1/00; B65D1/22; B65D1/40; B65D1/42; B65D1/46; B65D2401/00; B65D2401/10; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00435; B65D2543/00444; B65D2543/00453; B65D2543/00472; B65D2543/00481; B65D2543/0049; B65D2543/00518; B65D2543/00537; B65D2543/00546; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00629; B65D2543/00657; B65D2543/00675; B65D2543/00685; B65D2543/00694; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796; B65D2543/00805; B65D2543/00824; B65D2543/00833; B65D2543/00842; B65D2543/00888; B65D2543/00898
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
89 words
A container made of flexible resilient plastics, said container comprising: a sidewall; a rim portion on said sidewall; a hinged portion joining said rim portion and said sidewall, said hinge portion being of substantially less thickness than said rim portion and said sidewall; said sidewall, rim portion and hinge portion being molded in one piece and so formed that said rim portion can be folded inwardly and held in a position bearing against an inside of said sidewall, said rim portion when folded inwardly projecting inwards from said sidewall.
Claim 2
Dependent Claim
89 words
A container made of flexible resilient plastics, said container comprising: a sidewall; a rim portion on said sidewall; a hinged portion joining said rim portion and said sidewall, said hinge portion being of substantially less thickness than said rim portion and said sidewall; said sidewall, rim portion and hinge portion being molded in one piece and so formed that said rim portion can be folded inwardly and held in a position bearing against an inside of said sidewall, said rim portion when folded inwardly projecting inwards from said sidewall.
Claim 3
Dependent Claim
50 words
A container according to claim 1, wherein said sidewall, rim portion and hinge portion are inwardly concave, whereby when said rim portion is folded inwardly it is held in a position bearing against the inside of said sidewall by opposing forces in said rim portion and sidewall caused by folding.
Claim 4
Dependent Claim
16 words
A plastics container according to claim 2 wherein the rim portion extends continuously around the container.
Claim 5
Dependent Claim
24 words
A plastics container according to claim 2 wherein there are provided a plurality of rim portions spaced apart from one another around the container.
Claim 6
Dependent Claim
37 words
A plastics container according to claim 2 wherein at least two co-extensive rim portions are provided connected to each other by an integral hinge portion whereby the co-extensive rim portions can be folded inwardly of the container.
Claim 7
Dependent Claim
21 words
A plastics container according to claim 2 wherein the rim portion is shaped for releasably securing a lid on the container.
Claim 8
Dependent Claim
23 words
A plastics container according to claim 2 wherein said side wall has an internal recess for supporting said rim portion when folded inwardly.
Claim 9
Dependent Claim
44 words
A plastics container according to claim 2 wherein said side wall has an internal recess so formed that when the rim portion is folded inwardly there is a clearance between the rim portion and an upwardly-directed surface of the recess for accommodating a lid.
Claim 10
Dependent Claim
33 words
A plastics container according to claim 2 wherein said rim portion and the inside of said side wall are provided with complementary profiled formations which intermesh when the rim portion is folded inwardly.
Claim 11
Dependent Claim
26 words
A plastics container according to claim 2 wherein said rim portion has at least one projection which extends upwardly when the rim portion is folded inwardly.
Claim 12
Dependent Claim
81 words
A plastics container according to claim 2 having a lid, the lid and said rim portion being so formed that when the rim portion is folded inwardly and the lid is applied the lid and container engage each other at two axially spaced positions, the distance between the engagement positions on the container being greater than the distance between the engagement positions on the lid before the latter is applied, whereby after the lid has been applied it is axially tensioned.
Claim 13
Dependent Claim
28 words
A plastics container according to claim 2 having a lid, at least one of the container and the lid having at least one recess or projection for opening.
Claim 14
Dependent Claim
49 words
A plastics container according to claim 2 having a lid, the rim portion and lid being so formed that the inwardly-folded rim portion is locked in position by the lid, whereby the rim portion has to be peeled off along said hinge portion to permit removal of the lid.
Claim 15
Dependent Claim
27 words
A plastics container according to claim 2 having a lid, wherein one of the lid and the container has two axially spaced snap beads of different sizes.
Claim 16
Dependent Claim
27 words
A plastics container according to claim 2 wherein said rim portion has been folded inwards and is held in its inwards position by forces caused by folding.
Claim 17
Dependent Claim
25 words
A plastics container according to claim 1 wherein said rim portion has been folded inwardly and is held in its inwards position by securing means.
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) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |