US3917100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure with rotatable layered liner
Assignee: TRI-SEAL EXTRUSION Inc A NEW YORK CORP
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Filing: 1974-06-24
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Granted: 1975-11-04
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Expires: 1994-06-24
Abstract
Abstract Material for cap liners in the form of a sandwich and so arranged that a compressible intermediate layer of relatively great thickness is disposed between two relatively thin nonresilient layers. The intermediate layer can be squeezed beyond the periphery of the material for making a better seal.
Inventors
- 👤 Joseph Dukess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:37
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; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2323/00; B32B2323/04; B32B2323/046; B32B2435/00; B32B2435/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 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 normally rotatably disposed in said groove and including a disc having one outer layer and an intermediate layer and bonded thereto, 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, said intermediate layer being relatively thick.
Claim 2
Dependent Claim
93 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 normally rotatably disposed in said groove and including a disc having one outer layer and an intermediate layer and bonded thereto, 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, said intermediate layer being relatively thick.
Claim 3
Dependent Claim
23 words
A closure device according to claim 1, wherein said intermediate layer 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)
US1431871A
Cited
US2039757A
Cited
US2188942A
Cited
US2626073A
Cited
US3202308A
Cited
US3463339A
Cited
US3471051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |