Patent US3976217A successfully refreshed from Google Patents.
US3976217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap liner construction
Assignee: Individual
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Filing: 1975-06-23
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Granted: 1976-08-24
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Expires: 1995-06-23
Abstract
Abstract Cap liner construction in the form of a sandwich and so arranged that a compressible intermediate layer of relatively great thickness is disposed between two relatively thin non-resilient layers. The cap liner is sealed to the cap. The intermediate layer can be squeezed beyond the periphery of the material for making a better seal. Another embodiment discloses a two layer liner bonded to the cap.
Inventors
- 👤 Joseph Dukess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:55
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/065; B32B27/30; B32B27/306; B32B27/32; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/045; B32B2250/00; B32B2250/40; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2323/00; B32B2323/04; B32B2323/046; B32B2435/00; B32B2435/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A closure device comprising a cap having a top and an internally threaded cylindrical side wall, said side wall having a groove therein adjacent said top, a liner disposed in said groove and including a disc having one outer layer and an intermediate layer bonded to said outer layer, said liner being bonded to said top, said outer layer being relatively thin and non-resilient, said intermediate layer being resilient and being compressible to form a lip extending beyond the periphery of said outer layer and into engagement with said side wall in said groove for forming a seal, said intermediate layer being relatively thick.
Claim 2
Dependent Claim
104 words
A closure device comprising a cap having a top and an internally threaded cylindrical side wall, said side wall having a groove therein adjacent said top, a liner disposed in said groove and including a disc having one outer layer and an intermediate layer bonded to said outer layer, said liner being bonded to said top, said outer layer being relatively thin and non-resilient, said intermediate layer being resilient and being compressible to form a lip extending beyond the periphery of said outer layer and into engagement with said side wall in said groove for forming a seal, said intermediate layer being relatively thick.
Claim 3
Dependent Claim
29 words
A closure device according to claim 1, wherein said intermediate layer is bonded to said top and is from 12 to 40 times the thickness of said outer layer.
Claim 4
Dependent Claim
32 words
A closure device according to claim 2, wherein said outer layer is of a low density polyethylene, said intermediate layer being engageable with said top and being of a thermoplastic rubberlike material.
Claim 5
Dependent Claim
17 words
A closure device according to claim 3, wherein said intermediate layer is of ethylene vinyl acetate copolymer.
Claim 6
Dependent Claim
15 words
A closure device according to claim 2, wherein said intermediate layer is of foamed polyethylene.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |