US3754690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible container with dispensing cap
Assignee: Graham Packaging Plastic Products Inc
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Filing: 1970-11-18
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Granted: 1973-08-28
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Expires: 1990-11-18
Abstract
Abstract A plastic container having flexible sidewalls adapted for dispensing viscous materials. The container is provided with a hollow, cylindrical neck section which receives a two-piece, snap-on dispensing cap. The dispensing cap contains a springloaded, normally closed valve member that is opened by application of pressure to the container to force the product to lift an upstanding tapered boss carried by the valve member from a sealing engagement with a central opening in the dispensing cap. When the pressure is released, the valve member automatically closes and prevents intrusion of air into the container.
Inventors
- 👤 P Marchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:16
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/2056; B65D47/2062; B65D47/2075
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
In a flexible-wall, plastic dispensing container the combination comprising: a. a flexible-wall plastic container having a generally cylindrical neck will an opening therein; b. a cap having a top wall providing a central opening therein and an integral depending annular skirt frictionally fitted over the neck of said container; and c. an integral, one-piece, plastic, spring-loaded valve member including, i. an upper boss portion having the form of an inverted, truncated cone, said boss extending through said central opening in said cap to seal said opening, ii. a cylindrical shaft central portion joined to said boss portion, iii. a single, leaf spring portion joined at its midpoint to the bottom of said cylindrical portion, said spring terminating on its ends by outturned and upturned fingers having their ends in abutment with the bottom surface of said top wall of said cap.
Claim 2
Dependent Claim
141 words
In a flexible-wall, plastic dispensing container the combination comprising: a. a flexible-wall plastic container having a generally cylindrical neck will an opening therein; b. a cap having a top wall providing a central opening therein and an integral depending annular skirt frictionally fitted over the neck of said container; and c. an integral, one-piece, plastic, spring-loaded valve member including, i. an upper boss portion having the form of an inverted, truncated cone, said boss extending through said central opening in said cap to seal said opening, ii. a cylindrical shaft central portion joined to said boss portion, iii. a single, leaf spring portion joined at its midpoint to the bottom of said cylindrical portion, said spring terminating on its ends by outturned and upturned fingers having their ends in abutment with the bottom surface of said top wall of said cap.
Claim 3
Dependent Claim
72 words
The combination of claim 1 in which the dispensing cap annular skirt is provided with an inwardly and upwardly sloping, inner, conical wall adjacent its lower end, an inwardly projecting shoulder at the upper end of said inner, conical wall, and said container neck being provided with an outwardly extending annular ring at its upper end adapted to engage said shoulder on said cap to retain said cap on said container neck.
Claim 4
Dependent Claim
40 words
The combination of claim 1 in which the portion of said cap top wall defining said opening is provided with a beveled surface of substantially the same angle as the conical wall of said boss portion of said valve member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |