Patent US3843028A successfully refreshed from Google Patents.
US3843028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closures
Assignee: Individual
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Filing: 1973-02-13
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Granted: 1974-10-22
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Expires: 1993-02-13
Abstract
Abstract This invention relates to dispensing caps for squeeze type containers for liquids, and semiliquids, which dispense said liquids, and semiliquids when pressure is applied to said containers. This applies to those containers which collapse when squeezed, such as toothpaste tubes, and the like, and squeeze bottles which revert to their normal shape after being squeezed. This applies also to liquids which are thin, such as water, and semiliquids which are thick, such as toothpaste, and all graduations between.
Inventors
- 👤 J Whitehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:00
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/205
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
303 words
A self sealing cap adapted to connection to squeeze type containers, comprised of an assembly of three parts, said parts being a substantially rigid cap body, having a generally cylindrical surface shape, hollow and open at both ends, said cap having an upper face, one opening being inclined at an angle to a longitudinal axis, the plane of said opening extending from a point on the cylindrical surface to the upper face, bisecting this face, said opening being substantially of a rounded triangle shape, the upper face of the cap body being at an angle to the plain of this opening, said cap body having a vent tube as an integral part of it, said vent tube being a passage from the outside of said cap, with an inner inclined opening into the interior of the container, positioned substantially parallel to the longitudinal axis of said cap body; an elastic diaphragm sleeve of the same general cylindrical configuration as said cap body, said diaphragm sleeve is adapted to fit over the cap body in such a manner as to cover the inclined opening, sealing it; and an inner diaphragm sleeve adapted to fit over said inner inclined opening, said assembly utilizing the pressure transmitted through the contents of the container, when said container is squeezed, to cause the diaphragm sleeve to open, said diaphragm sleeve utilizing its own natural resiliency to resume its normal shape, resealing said inclined opening, this being its normal shape in this assembly, the inner diaphragm sleeve utilizing the partial vacumm caused by the intended discharge of a portion of the contents of said container to open, venting the interior of the container to the atmosphere, and thE natural resiliency of the inner diaphragm sleeve to reseal the inner inclined opening, this being its normal shape in this assembly.
Claim 2
Dependent Claim
303 words
A self sealing cap adapted to connection to squeeze type containers, comprised of an assembly of three parts, said parts being a substantially rigid cap body, having a generally cylindrical surface shape, hollow and open at both ends, said cap having an upper face, one opening being inclined at an angle to a longitudinal axis, the plane of said opening extending from a point on the cylindrical surface to the upper face, bisecting this face, said opening being substantially of a rounded triangle shape, the upper face of the cap body being at an angle to the plain of this opening, said cap body having a vent tube as an integral part of it, said vent tube being a passage from the outside of said cap, with an inner inclined opening into the interior of the container, positioned substantially parallel to the longitudinal axis of said cap body; an elastic diaphragm sleeve of the same general cylindrical configuration as said cap body, said diaphragm sleeve is adapted to fit over the cap body in such a manner as to cover the inclined opening, sealing it; and an inner diaphragm sleeve adapted to fit over said inner inclined opening, said assembly utilizing the pressure transmitted through the contents of the container, when said container is squeezed, to cause the diaphragm sleeve to open, said diaphragm sleeve utilizing its own natural resiliency to resume its normal shape, resealing said inclined opening, this being its normal shape in this assembly, the inner diaphragm sleeve utilizing the partial vacumm caused by the intended discharge of a portion of the contents of said container to open, venting the interior of the container to the atmosphere, and thE natural resiliency of the inner diaphragm sleeve to reseal the inner inclined opening, this being its normal shape in this assembly.
Claim 3
Dependent Claim
22 words
A self sealing cap in accordance with claim 1, whereby the cap body is molded as an integral part of the container.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |