US4562937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally-seating container closure
Assignee: Baxter International Inc
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Filing: 1983-07-28
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Granted: 1986-01-07
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Expires: 2003-07-28
Abstract
Abstract A container closure includes a cover portion and a rim portion at the edge of, and upstanding from the cover portion; the rim includes a flat, solid, annular ring member surrounding a raised, solid, round-shouldered, circular center area; the rim portion surrounds the cover portion and includes an upstanding, annular wall with an outwardly-projecting annular flange for engaging the inner surface of a container at its opening and, at the top edge of the annular wall, a planar flange parallel to the cover portion for seating on the rim of a container opening.
Inventors
- 👤 Mike Iyengar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:12
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/021; B65D51/00; B65D51/16; B65D51/1605; B65D51/1611; B65D2205/00; B65D2205/02; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/00074; B65D2543/00092; B65D2543/00259; B65D2543/00296; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00509; B65D2543/00537; B65D2543/00546; B65D2543/00592; B65D2543/00712; B65D2543/00722; B65D2543/00731; B65D2543/00787; B65D2543/00796; B65D2543/00824; B65D2543/00833; B65D2543/00842
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
A circular, one-piece closure of thermoplastic material for fitting inside and sealing the opening of a cylindrical container comprising: a circular, resilient cover portion having a substantially flat, annular ring surrounding a raised, circular center area; said circular center area having a shoulder projecting downwardly and outwardly from the outer edge of the center area to the inner edge of said annular ring portion; a circular rim portion surrounding the outer edge of said cover portion and having an upstanding, annular wall; said upstanding wall having a substantially planar annular flange disposed at the top edge of said wall and projecting outwardly therefrom; said planar annular flange being disposed substantially parallel to said cover portion, and having a sealing means disposed adjacent its bottom surface for engaging the inner surface of the lip of the container at its opening and providing a sealing surface for engagement with the upper edge of the container opening; said sealing means comprising a rim projecting outwardly from the upstanding wall; and an outwardly-projecting annular flange for engaging the container along a substantially unbroken line at the outermost edge of said flange; said flange projecting outwardly from the upstanding wall and being disposed between the sealing means and the lower portion of said annular wall.
Claim 2
Dependent Claim
210 words
A circular, one-piece closure of thermoplastic material for fitting inside and sealing the opening of a cylindrical container comprising: a circular, resilient cover portion having a substantially flat, annular ring surrounding a raised, circular center area; said circular center area having a shoulder projecting downwardly and outwardly from the outer edge of the center area to the inner edge of said annular ring portion; a circular rim portion surrounding the outer edge of said cover portion and having an upstanding, annular wall; said upstanding wall having a substantially planar annular flange disposed at the top edge of said wall and projecting outwardly therefrom; said planar annular flange being disposed substantially parallel to said cover portion, and having a sealing means disposed adjacent its bottom surface for engaging the inner surface of the lip of the container at its opening and providing a sealing surface for engagement with the upper edge of the container opening; said sealing means comprising a rim projecting outwardly from the upstanding wall; and an outwardly-projecting annular flange for engaging the container along a substantially unbroken line at the outermost edge of said flange; said flange projecting outwardly from the upstanding wall and being disposed between the sealing means and the lower portion of said annular wall.
Claim 3
Dependent Claim
23 words
The container closure of claim 1 further including a tab for grasping the closure, said tab extending outwardly from said planar annular flange.
Claim 4
Dependent Claim
15 words
The container closure of claim 2 further including an opening in the circular center area.
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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |