Patent US3559843A successfully refreshed from Google Patents.
US3559843A
Expired / Lapsed
US
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Closure for containers
Assignee: Dart Industries Inc
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Filing: 1968-07-26
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Granted: 1971-02-02
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Expires: 1988-07-26
Abstract
Abstract A container and a closure therefore adapted to form a moisturetight seal and wherein the closure has a skirt that expands or contracts from the normal position to contact the sidewalls of the container as the top of the closure is flexed from one to another of two stable convex configurations.
Inventors
- 👤 Egon Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/021; B65D43/0214; B65D43/0222; B65D51/00; B65D51/16; B65D51/1672; B65D51/1688; B65D51/1694; B65D2205/00; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00342; B65D2543/0037; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00518; B65D2543/00527; B65D2543/00537; B65D2543/00546; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00629; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796; B65D2543/00824; B65D2543/00861; B65D2543/00879
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
204 words
A container for the storage of foodstuffs and comprising a bowl and a removable and deformable lid, said bowl including an upper open ended wall construction that is of substantially cylindrical configuration, said lid being comprised of a flexible top portion which is movable to two positions of stable convex configuration and from which there depends a flange that is adapted to assume a cylindrical configuration in one of said two positions of said flexible top portion such that it can be placed upon said bowl with the flange in telescoping relation with the upper open ended wall construction and is further adapted to assume a conical shape in the other of said two positions of said flexible top portion such that the flange tightly presses against the upper open ended wall construction, a plurality of connected grooves extending radially in the underside of said flexible top portion and downwardly along the sealing side of said flange to a point of termination immediately below the interconnection between said flange and flexible top portion, and a handle attached to the outer face of the flexible top portion so that it may be employed to move said top portion from each to another of saiD positions.
Claim 2
Dependent Claim
204 words
A container for the storage of foodstuffs and comprising a bowl and a removable and deformable lid, said bowl including an upper open ended wall construction that is of substantially cylindrical configuration, said lid being comprised of a flexible top portion which is movable to two positions of stable convex configuration and from which there depends a flange that is adapted to assume a cylindrical configuration in one of said two positions of said flexible top portion such that it can be placed upon said bowl with the flange in telescoping relation with the upper open ended wall construction and is further adapted to assume a conical shape in the other of said two positions of said flexible top portion such that the flange tightly presses against the upper open ended wall construction, a plurality of connected grooves extending radially in the underside of said flexible top portion and downwardly along the sealing side of said flange to a point of termination immediately below the interconnection between said flange and flexible top portion, and a handle attached to the outer face of the flexible top portion so that it may be employed to move said top portion from each to another of saiD positions.
Claim 3
Dependent Claim
38 words
A container according to claim 1, wherein said flange further includes a projection that engages a mating projection in the upper open ended wall construction of said bowl when the lid is in sealed relationship with said bowl.
Claim 4
Dependent Claim
26 words
A container according to claim 1, wherein said handle is hinged in such manner that it can be rotated to an out of the way position.
Claim 5
Dependent Claim
197 words
A container for the storage of foodstuffs and comprising a bowl and a removable and deformable lid, said bowl including an upper open ended wall construction that is of a substantially cylindrical configuration and that has formed therein a plurality of grooves extending radially across the upper edge of the wall and downwardly in the sealing side thereof to a point immediately below the upper edge, said lid having a flexible top portion which is movable to two positions of stable convex configuration and from which there depends a flange that is adapted to assume a cylindrical configuration in one of said two positions of said flexible top portion such that it can be placed upon said bowl with the flange in telescoping relation with the upper open ended wall construction and is further adapted to assume a conical shape in the other of said two positions of said flexible top portion such that the flange tightly presses against said upper open ended wall construction, and a handle attached to the outer face of the flexible top portion so that it may be employed to move said top portion from each to the other of said positions.
Claim 6
Dependent Claim
197 words
A container for the storage of foodstuffs and comprising a bowl and a removable and deformable lid, said bowl including an upper open ended wall construction that is of a substantially cylindrical configuration and that has formed therein a plurality of grooves extending radially across the upper edge of the wall and downwardly in the sealing side thereof to a point immediately below the upper edge, said lid having a flexible top portion which is movable to two positions of stable convex configuration and from which there depends a flange that is adapted to assume a cylindrical configuration in one of said two positions of said flexible top portion such that it can be placed upon said bowl with the flange in telescoping relation with the upper open ended wall construction and is further adapted to assume a conical shape in the other of said two positions of said flexible top portion such that the flange tightly presses against said upper open ended wall construction, and a handle attached to the outer face of the flexible top portion so that it may be employed to move said top portion from each to the other of said positions.
Claim 7
Dependent Claim
53 words
A container according to claim 4, characterized in that the top portion of the lid in its position in which the depending flange is cylindrical is upwardly convex from the bowl rim and the depending flange is disposed at the periphery of the lid and externally grips around the rim of the bowl.
Claim 8
Dependent Claim
87 words
A container according to claim 4, characterized in that the top portion of the lid in its position in which the depending flange is cylindrical is convex downwardly from the bowl rim and the depending flange is disposed radially inwardly from the periphery of the lid and reposes inside the rim of the bowl and has at its lower end an externally projecting protrusion which lockingly grips under a corresponding protrusion of the inner face of the side wall of the bowl when the container is closed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |