US4533064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Can and closure structure
Assignee: Nihon Seikan KK
•
Filing: 1984-08-27
•
Granted: 1985-08-06
•
Expires: 2004-08-27
Abstract
Abstract A can or similar container usually equipped with a removable top cover includes a thin-foil partition that is detachably mounted over the open top of the can body, the thin-foil partition carrying a peripheral score or cut line and a straight score or cut line defining a semi-circular dispensing opening area, and a finger grip which allows the partition to be detached along the two score lines to provide a semi-circular dispensing opening. The partition is made of a thin film material, and includes a rivet-like hollow bulge integrally formed thereon, which is backed by a reinforcing filler member inside to solidify the hollow bulge. The finger grip is solidly secured to an appropriate position of the partition by means of the reinforced bulge, and pulling it up with a finger causes the semi-circular dispensing opening area of the partition to be detached apart from the can body. The straight-line cut edge left after the removal of the opening area serves as a scraper edge for smoothing the excess on a spoon.
Inventors
- 👤 Kiyoshi Kawamata
- 👤 Seizi Kawamata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:20
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/18; B65D51/20; B65D17/00; B65D17/28; B65D17/401; B65D17/4012; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0212; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0018; B65D2251/0068; B65D2251/0071; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00231; B65D2543/0024; B65D2543/00259; B65D2543/00277; B65D2543/00296; B65D2543/00314; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/00638; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/00731; B65D2543/00787; B65D2543/00796
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A can or similar container construction removably capped by a top cover having an intermediate film base partition detachably mounted over the open top of the can body, the partition carrying a peripheral score line and a straight score line across the partiton as well as a finger grip allowing the partition to be detached apart from the can body, comprising: said finger grip having a mounting hole on one side acting as a pivotal or fulcrum point upon pulling the finger grip up from the other side thereof; said intermediate film base partition having a hollow protrusion integrally formed thereon, for being inserted into said mounting hole; and a reinforcing metal packing member backing said hollow protrusion from the inside thereof, whereby said finger grip is solidly secured to the partition by inserting the reinforced hollow partition into said mounting hole of the finger grip and subjecting said reinforced hollow protrusion to deformation for engaging the mounting hole of the finger grip.
Claim 2
Dependent Claim
163 words
A can or similar container construction removably capped by a top cover having an intermediate film base partition detachably mounted over the open top of the can body, the partition carrying a peripheral score line and a straight score line across the partiton as well as a finger grip allowing the partition to be detached apart from the can body, comprising: said finger grip having a mounting hole on one side acting as a pivotal or fulcrum point upon pulling the finger grip up from the other side thereof; said intermediate film base partition having a hollow protrusion integrally formed thereon, for being inserted into said mounting hole; and a reinforcing metal packing member backing said hollow protrusion from the inside thereof, whereby said finger grip is solidly secured to the partition by inserting the reinforced hollow partition into said mounting hole of the finger grip and subjecting said reinforced hollow protrusion to deformation for engaging the mounting hole of the finger grip.
Claim 3
Dependent Claim
21 words
A can or similar container construction as defined in claim 1, wherein said reinforcing metal packing member is solid or hollow.
Claim 4
Dependent Claim
57 words
A can or similar container construction as defined in any of claims 1, 2 and 3, wherein the finger grip includes an annular stepped portion or shoulder of reduced diameter in the mounting hole thereof, and is solidly secured to the partition by sandwitching said shoulder between the reinforcing metal packing member and the film base partition.
Claim 5
Dependent Claim
32 words
A can or similar container construction as defined in claim 2, wherein said hollow reinforcing packing member has a cylindrical form closed or open at the top including a marginal bent flange.
References Cited (Backward Citations)
US3383008A
Cited
US3554369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |