Patent US4712249A successfully refreshed from Google Patents.
US4712249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: FGL Projects Ltd
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Filing: 1986-02-10
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Granted: 1987-12-08
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Expires: 2006-02-10
Abstract
Abstract A valve which is to be used as a component of plastics bags and trays for packaging foodstuffs and other perishable goods. The valve consists essentially of a small spherical chamber having an inlet and an outlet. The chamber is made from two hemi-spherical walls having different resilience. In order to close the valve one wall is made to spring into contact with the other wall so that the two walls enter into such close intimate contact that communication between the inlet and the outlet through the valve is prevented.
Inventors
- 👤 Raymond Gannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:44
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2038; F; F16; F16K; F16K3/00; F16K3/02; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D81/2023; B65D81/2069; B65D81/2076
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
A valve for use in the packaging of perishable goods comprising a chamber having two walls and an inlet and an outlet disposed obliquely with respect to each other on either of the walls and one of the walls being deformable resiliently in the direction of the other wall and when deformed the deformable wall enters into such close intimate contact with other wall that communiction between the inlet and the outlet within the valve is prevented.
Claim 2
Dependent Claim
77 words
A valve for use in the packaging of perishable goods comprising a chamber having two walls and an inlet and an outlet disposed obliquely with respect to each other on either of the walls and one of the walls being deformable resiliently in the direction of the other wall and when deformed the deformable wall enters into such close intimate contact with other wall that communiction between the inlet and the outlet within the valve is prevented.
Claim 3
Dependent Claim
12 words
A valve according to claim 1 wherein the walls have different resilience.
Claim 4
Dependent Claim
22 words
A valve according to either of claims 1 or 2 wherein a part of a wall is shaped to form a spring.
Claim 5
Dependent Claim
14 words
A valve according to claim 3 wherein the spring is S or Z shaped.
Claim 6
Dependent Claim
23 words
A valve according to claim 1 or 2 wherein the inner surface of one of the walls is a pressure sensitive adhesive surface.
Claim 7
Dependent Claim
11 words
A container incorporating a valve according to claim 1 or 2.
Claim 8
Dependent Claim
26 words
A container according to claim 6 comprising a bag made from thermoplastics material wherein a part of the wall thereof constitutes a wall of the valve.
Claim 9
Dependent Claim
52 words
A container according to claim 6 comprising a tray having a rigid or semi-rigid walls and a lid comprising a thin deformable sheet both the tray and the sheet comprising thermoplastics material and a part of a wall of the tray and of the lid each constitutes a wall of the valve.
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) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |