US3638835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible sanitary container
Assignee: Individual
•
Filing: 1969-10-29
•
Granted: 1972-02-01
•
Expires: 1989-10-29
Abstract
Abstract A generally rectangular polyethylene container for liquids such as milk having a retractable spout with spaced annular supporting ribs and adapted to be folded to collapsed condition and sealed promptly after manufacture, the material being so constructed and of such nature as to permit said folding but having sufficient strength that the container may be suspended from one of the supporting ribs of the spout prior to filling so that it may be filled without bottom support, the container being automatically opened out by the filling process and being self-supporting when filled with liquid.
Inventors
- 👤 Eugene E Goodrich
- 👤 Paul J Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:29
CPC Classifications
B; B65; B65D; B65D37/00; B65D1/00; B65D1/12; B65D1/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A substantially flat-folded collapsed rectangular prism container of one-piece flexible material having a rectangular, permanently closed top and having a first rectangular sidewall, a spout projecting from a corner edge between said top and first sidewall, said container having three other rectangular sidewalls and having a rectangular bottom, the bottom being folded into parallelism with said first sidewall on the corner edge between said bottom and said wall, the wall opposite said first-mentioned sidewall being inverted into L-shape with a part in substantial parallelism with the top of the container and with a part forming an extension of said bottom and in parallelism with said firstmentioned sidewall, the other two sidewalls being doubled inwardly to triangular form on diagonal fold lines, with said last-mentioned triangular doubled wall portions being kinked inwardly toward one another on additional diagonal fold lines bringing the top of the container into substantial parallelism with the first-mentioned sidewall to a substantially flat-folded condition.
Claim 2
Dependent Claim
157 words
A substantially flat-folded collapsed rectangular prism container of one-piece flexible material having a rectangular, permanently closed top and having a first rectangular sidewall, a spout projecting from a corner edge between said top and first sidewall, said container having three other rectangular sidewalls and having a rectangular bottom, the bottom being folded into parallelism with said first sidewall on the corner edge between said bottom and said wall, the wall opposite said first-mentioned sidewall being inverted into L-shape with a part in substantial parallelism with the top of the container and with a part forming an extension of said bottom and in parallelism with said firstmentioned sidewall, the other two sidewalls being doubled inwardly to triangular form on diagonal fold lines, with said last-mentioned triangular doubled wall portions being kinked inwardly toward one another on additional diagonal fold lines bringing the top of the container into substantial parallelism with the first-mentioned sidewall to a substantially flat-folded condition.
Claim 3
Dependent Claim
35 words
A collapsed container as set forth in claim 1, in which the container is formed of strong, flexible, molded plastic material, and in which the plastic is of thinner gauge along the lines of fold.
Claim 4
Dependent Claim
84 words
A substantially flat-folded collapsed rectangular prism container of flexible material having a rectangular top, a spout projecting from a corner edge between said top and a first sidewall, the container having one diagonal half inverted inside of the other toward the corner edge which has the spout to provide oppositely disposed sidewalls which are doubled inwardly to triangular form, said walls being buckled inwardly toward one another between the top of the container and said first-mentioned sidewall with all wall portions in substantial parallelism.
Claim 5
Dependent Claim
84 words
A substantially flat-folded collapsed rectangular prism container of flexible material having a rectangular top, a spout projecting from a corner edge between said top and a first sidewall, the container having one diagonal half inverted inside of the other toward the corner edge which has the spout to provide oppositely disposed sidewalls which are doubled inwardly to triangular form, said walls being buckled inwardly toward one another between the top of the container and said first-mentioned sidewall with all wall portions in substantial parallelism.
Claim 6
Dependent Claim
35 words
A collapsed container as set forth in claim 3, in which the container is formed of strong, flexible, molded plastic material, and in which the plastic is of thinner gauge along the lines of fold.
References Cited (Backward Citations)
US817531A
Cited
US3089622A
Cited
US3082927A
Cited
US3160326A
Cited
US3171573A
Cited
US3233817A
Cited
US3354924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |