US4585135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw closure
Assignee: WR Grace and Co Conn
•
Filing: 1985-02-27
•
Granted: 1986-04-29
•
Expires: 2005-02-27
Abstract
Abstract A bottle closure comprises a cap moulded of a first plastics material includes a skirt having a step between a first inner surface portion and a second inner surface portion of the skirt, and a gasket of a second plastics composition covering a radially outer part of the inner surface of the cap end panel and also the first inner surface portion of the skirt and preferbly at least a part of the second inner surface portion, to achieve a combined side seal and top seal upon application of the closure to a bottle neck.
Inventors
- 👤 Kenneth M. Sinnott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:30
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/0442; B29; B29C; B29C45/00; B29C45/16; B29C45/1676
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
A closure for a container comprising a molded cap comprising a first plastics material, said cap having an end panel and a skirt downwardly depending from the end panel, the skirt having a radially inwardly facing surface stepped to define a first and a second inner surface portion of which the second inner surface portion is further from the end panel, and the first inner surface portion has a diameter smaller than the second inner surface portion, the skirt being internally threaded for engagement with external threading on a neck of the container the internal threads of the skirt being separated from the first and second inner surface portions and the end panel by a substantially planar surface; and a gasket formed in situ on the end panel near its junction with the skirt, the gasket comprising a second plastics material which is softer than the first plastics material, said gasket extending over the first inner surface portion and at least a part of the second inner surface portion such that when the closure is driven downwardly onto the neck of the container a side seal is formed.
Claim 2
Dependent Claim
188 words
A closure for a container comprising a molded cap comprising a first plastics material, said cap having an end panel and a skirt downwardly depending from the end panel, the skirt having a radially inwardly facing surface stepped to define a first and a second inner surface portion of which the second inner surface portion is further from the end panel, and the first inner surface portion has a diameter smaller than the second inner surface portion, the skirt being internally threaded for engagement with external threading on a neck of the container the internal threads of the skirt being separated from the first and second inner surface portions and the end panel by a substantially planar surface; and a gasket formed in situ on the end panel near its junction with the skirt, the gasket comprising a second plastics material which is softer than the first plastics material, said gasket extending over the first inner surface portion and at least a part of the second inner surface portion such that when the closure is driven downwardly onto the neck of the container a side seal is formed.
Claim 3
Dependent Claim
97 words
A closure for a container comprising a molded cap of a first plastic material, the cap having an end panel and an internally threaded skirt extending downwardly from the end panel, the end panel being substantially planar the skirt having a substantially thickened area adjacent the end panel and a substantially planar area between the substantially thickened area and the internal threads, and a gasket formed in situ on the end panel and extending over the substantially thickened area onto the skirt, the gasket comprising a second plastic material which is softer than the first plastic material.
Claim 4
Dependent Claim
97 words
A closure for a container comprising a molded cap of a first plastic material, the cap having an end panel and an internally threaded skirt extending downwardly from the end panel, the end panel being substantially planar the skirt having a substantially thickened area adjacent the end panel and a substantially planar area between the substantially thickened area and the internal threads, and a gasket formed in situ on the end panel and extending over the substantially thickened area onto the skirt, the gasket comprising a second plastic material which is softer than the first plastic material.
Claim 5
Dependent Claim
93 words
A closure for a container comprising a molded cap having an end panel and a skirt depending downwardly from the end panel and having internal threads, a shoulder formed at a junction between the end panel and the skirt, the skirt having a substantially planar surface extending downwardly on a side of the skirt opposite the end panel from the shoulder to the internal threads and a gasket formed in situ on the end panel and extending over the shoulder and at least a part of the substantially planar surface of the skirt.
Claim 6
Dependent Claim
93 words
A closure for a container comprising a molded cap having an end panel and a skirt depending downwardly from the end panel and having internal threads, a shoulder formed at a junction between the end panel and the skirt, the skirt having a substantially planar surface extending downwardly on a side of the skirt opposite the end panel from the shoulder to the internal threads and a gasket formed in situ on the end panel and extending over the shoulder and at least a part of the substantially planar surface of the skirt.
References Cited (Backward Citations)
US3110409A
Cited
DE1184271B
Cited
GB975739A
Cited
US3253727A
Cited
CH464721A
Cited
GB1164367A
Cited
GB1203068A
Cited
GB1255739A
Cited
US3827594A
Cited
GB1327583A
Cited
US3868038A
Cited
GB1577663A
Cited
GB1592793A
Cited
GB2022064A
Cited
US4244481A
Cited
US4244481B1
Cited
GB2026995A
Cited
GB2051660A
Cited
US4304744A
Cited
WO1981000838A1
Cited
WO1981000822A1
Cited
EP0031673A2
Cited
WO1982002182A1
Cited
US4462502A
Cited
US4331249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |