US3817418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threaded container seal
Assignee: HUSSEY PLASTICS COMPANY Inc
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Filing: 1972-09-20
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Granted: 1974-06-18
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Expires: 1992-09-20
Abstract
Abstract A container and closure wherein the container has a threaded neck terminating at a top edge. The threaded cap screws onto the neck, and engagement of the top edge of the neck with the cap causes the upper end of the neck to expand outwardly and form a seal between the outer surface of the upper end and a sealing surface on the cap, below the top edge of the container.
Inventors
- 👤 D Mastrovito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:04
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0407; B65D41/0428
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
A container and closure assembly comprising a container made of a flexible plastic material and having a threaded neck terminating in a top edge, a threaded cap constructed and arranged to be screwed onto the threaded container neck, means defining an inwardly facing sealing surface on the cap which surrounds the neck of the container and which is disposed below the top edge of the neck and above the threaded portion of the neck when the cap is screwed substantially fully onto the neck, and cooperative means formed on the container neck and cap above their respective threaded portions and being responsive to tightening of said cap on said container neck to effect outward expansion of that portion of said neck which is disposed above the threaded region of said neck into sealing engagement with said sealing surface of the cap and form a seal between the container and cap.
Claim 2
Dependent Claim
150 words
A container and closure assembly comprising a container made of a flexible plastic material and having a threaded neck terminating in a top edge, a threaded cap constructed and arranged to be screwed onto the threaded container neck, means defining an inwardly facing sealing surface on the cap which surrounds the neck of the container and which is disposed below the top edge of the neck and above the threaded portion of the neck when the cap is screwed substantially fully onto the neck, and cooperative means formed on the container neck and cap above their respective threaded portions and being responsive to tightening of said cap on said container neck to effect outward expansion of that portion of said neck which is disposed above the threaded region of said neck into sealing engagement with said sealing surface of the cap and form a seal between the container and cap.
Claim 3
Dependent Claim
75 words
A container and closure as described in claim 1 further characterized by said neck having an upwardly and outwardly flared rim portion above the threads on the neck and terminating at said top edge, and said cap having a second surface for engaging the top edge and pushing the rim portion outwardly as the cap is tightened on the neck to cause the outer surface of the neck to push against the cap sealing surface.
Claim 4
Dependent Claim
43 words
A container and closure as described in claim 2 further characterized by said edge having a larger outer diameter than the inner diameter of the cap sealing surface causing the edge to squeeze by the cap sealing surface when the cap is tightened.
Claim 5
Dependent Claim
48 words
A container and closure as described in claim 3 further characterized by the inner diameter of the cap sealing surface being larger than the outer diameter of the surface oF the rim portion engaged by the sealing surface until the rim portion is pushed outwardly by the cap.
Claim 6
Dependent Claim
71 words
A container and closure as described in claim 1 further characterized by said neck having an upwardly extending rim portion above the threads on the neck and terminating at the top edge, and said cap having a second surface engaging the rim portion and pushing it outwardly as the cap is tightened on the neck to cause the outer surface of the rim portion to push against the cap sealing surface.
Claim 7
Dependent Claim
45 words
A container and closure as described in claim 5 further characterized by said second surface on the cap being inclined upwardly and outwardly with respect to the axis of the cap and engaging the edge to force the rim portion against the cap sealing surface.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |