US4091948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linerless container closure
Assignee: Individual
•
Filing: 1976-08-12
•
Granted: 1978-05-30
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Expires: 1996-08-12
Abstract
Abstract A container-closure combination is disclosed which meets current industry standards for tightness promulgated by the United States Pharmacopoeia XIX and The National Formulary XIV with an application torque of seven inch pounds or less.
Inventors
- 👤 John D. Northup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:24
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0407; B65D41/0428; Y; Y10; Y10S; Y10S215/00; Y10S215/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
A container-closure combination including a container having a neck portion terminating in a tapered sealing surface making an angle not greater than 55° to the longitudinal axis of the container, and a closure including an upper panel spanning the neck portion of the container, a resilient tapered sealing fin depending from the lower surface of said panel and extending downwardly and outwardly at an angle from 10° to 20° less than the angle made by said container sealing surface, and means on said container and said closure to bring said tapered fin into sealing engagement with said tapered sealing surface, the resiliency and mass of said fin being such that said seal is tight in accordance with the specification of National Formulary XIV, pp. 888-889 when the closure is applied with a sealing force not greater than that created by an application torque of seven inch-pounds for a 28 mm. closure.
Claim 2
Dependent Claim
151 words
A container-closure combination including a container having a neck portion terminating in a tapered sealing surface making an angle not greater than 55° to the longitudinal axis of the container, and a closure including an upper panel spanning the neck portion of the container, a resilient tapered sealing fin depending from the lower surface of said panel and extending downwardly and outwardly at an angle from 10° to 20° less than the angle made by said container sealing surface, and means on said container and said closure to bring said tapered fin into sealing engagement with said tapered sealing surface, the resiliency and mass of said fin being such that said seal is tight in accordance with the specification of National Formulary XIV, pp. 888-889 when the closure is applied with a sealing force not greater than that created by an application torque of seven inch-pounds for a 28 mm. closure.
Claim 3
Dependent Claim
34 words
The container closure combination defined in claim 1 in which said means to bring said tapered sealing fin into sealing engagement with said tapered sealing surface comprises cooperating threads on said cap and container.
Claim 4
Dependent Claim
27 words
A container-closure combination in accordance with claim 1 in which the required application torque for a tight seal on a 28 mm. closure is about three inch-pounds.
Claim 5
Dependent Claim
34 words
The container closure combination defined in claim 3 in which said means to bring said tapered sealing fin into sealing engagement with said tapered sealing surface comprises cooperating threads on said cap and container.
Claim 6
Dependent Claim
101 words
The container closure combination defined in claim 1 in which said means to bring said tapered sealing fin into sealing engagement with said tapered sealing surface comprises a series of lugs on the interior surface of said cap and a cooperating series of lock members formed on said container having notches to receive said lugs in locking engagement, the axial position of said locking members being such that when said lugs are in engagement therewith a sealing force is exerted between said sealing fin and said tapered sealing surface adequate to meet the National Formulary specification for a tightly closed container.
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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |