Patent US3874567A successfully refreshed from Google Patents.
US3874567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap action closure with concentric annular flex zones
Assignee: Phillips Petroleum Co
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Filing: 1970-04-07
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Granted: 1975-04-01
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Expires: 1990-04-07
Abstract
Abstract A plastic container has a bottom wall; upstanding side walls; a snap acting top wall with a dispensing opening, said top capable of flexing in two concentric annular zones to assume two stable positions; and a diaphragm across the upper portion of said container just below said top wall, said diaphragm having at least one perforation around the periphery thereof. The top is snapped into a convex up position to dispense the contents through the perforations and thereafter through the dispensing opening, and is snapped into a concave down position to close the container. This container primarily comprises parts fabricated from sheet material by thermoforming and die cutting.
Inventors
- 👤 Stafford D Collie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:10
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/24; B65D47/241; B65D47/243; B65D47/2018; B65D47/2056; B65D47/2081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A dispensing container containing a material to be packaged comprising: a bottom wall; side walls upstanding from said bottom wall; an integral, one-piece snap acting top wall connecting with said side walls, said top wall having a generally centrally located dispensing opening having a web extending part of the way across said dispensing opening to provide a gripping means and being so contoured as to have two concentric annular integral hinges around said dispensing opening, said hinges being separated by an annular surface, said hinges being capable of bending so that said top wall can assume two stable positions, an open convex position, and a closed concave position; a diaphragm across said container, positioned just below said top wall, said diaphragm having at least one hole around its periphery and further having a solid center section corresponding to the position of said dispensing opening, a generally flat top surface of said center section cooperating with said top to close said containers.
Claim 2
Dependent Claim
161 words
A dispensing container containing a material to be packaged comprising: a bottom wall; side walls upstanding from said bottom wall; an integral, one-piece snap acting top wall connecting with said side walls, said top wall having a generally centrally located dispensing opening having a web extending part of the way across said dispensing opening to provide a gripping means and being so contoured as to have two concentric annular integral hinges around said dispensing opening, said hinges being separated by an annular surface, said hinges being capable of bending so that said top wall can assume two stable positions, an open convex position, and a closed concave position; a diaphragm across said container, positioned just below said top wall, said diaphragm having at least one hole around its periphery and further having a solid center section corresponding to the position of said dispensing opening, a generally flat top surface of said center section cooperating with said top to close said containers.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |