US4569457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottle closure
Assignee: Yoshida Industry Co Ltd
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Filing: 1984-07-24
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Granted: 1986-02-11
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Expires: 2004-07-24
Abstract
Abstract A bottle closure includes a frusto-conical hollow sealing member open at its lower end and formed of a soft synthetic-resin material, and a closure cap having a T-shape and formed of a hard synthetic-resin material. The upper end of the sealing member is embedded in the closure cap, thereby integrally mounting the sealing member on the closure cap.
Inventors
- 👤 Yoshiharu Hatakeyama
- 👤 Shinichi Kozuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:30
CPC Classifications
B; B65; B65D; B65D39/00; B29; B29C; B29C45/00; B29C45/14; B29C45/16; B29C45/1676; B65D39/0052; B65D39/0094; B29C2045/1678; B29L; B29L2031/00; B29L2031/56; B29L2031/565; B65D2539/00; B65D2539/001; B65D2539/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A bottle closure comprising: a closure cap formed of a hard thermoplastic synthetic resin material, said closure cap having a substantially T-shape in elevational cross section including vertical and horizontal sections; an inverted frusto-conical sealing member formed of a soft thermoplastic synthetic resin material and provided at the outer surface thereof with circumferentially extended projections; and said sealing member being integrally mounted on said vertical section of said closure cap, with an upper end of said sealing member being embedded in said horizontal section of said closure cap by injection molding of said closure cap over said upper end of said sealing member.
Claim 2
Dependent Claim
103 words
A bottle closure comprising: a closure cap formed of a hard thermoplastic synthetic resin material, said closure cap having a substantially T-shape in elevational cross section including vertical and horizontal sections; an inverted frusto-conical sealing member formed of a soft thermoplastic synthetic resin material and provided at the outer surface thereof with circumferentially extended projections; and said sealing member being integrally mounted on said vertical section of said closure cap, with an upper end of said sealing member being embedded in said horizontal section of said closure cap by injection molding of said closure cap over said upper end of said sealing member.
Claim 3
Dependent Claim
45 words
A bottle closure as claimed in claim 1, wherein said sealing member has at the inner surface thereof a plurality of transverse bars and vertical bars, said transverse and vertical bars being tightly fitted in grooves formed on said vertical section of said closure cap.
Claim 4
Dependent Claim
32 words
A bottle closure as claimed in claim 1, wherein said sealing member has at said upper end thereof a radially outwardly extending flange embedded in said horizontal section of said closure cap.
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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |