US3558001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic container
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-08-07
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Granted: 1971-01-26
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Expires: 1989-08-07
Abstract
Abstract Thermoplastic containers having a single open end of improved vertical strength properties are secured by employing a series of interconnected, vertically disposed supporting columns as part of the wall of the container. Preferably, the supporting columns extend laterally, outwardly from the noncolumn containing surface of the container sidewall. Each of the columns comprises two substantially identical isosceles trapezoids, each having a base and a side opposite therefrom of from 25 to 75 percent of the length of the base, and an elongated rectangular member of a length substantially equal to the length of the base of the trapezoids. The rectangular member is positioned between and connected to the bases of the trapezoids. Successive columns are interconnected along the side opposite the base of the trapezoids.
Inventors
- 👤 Robert R Fritz
- 👤 George R Ingram
- 👤 Lawrence D Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/40; B65D1/42; B65D1/44; B65D15/00; B65D15/02; B65D15/16; B65D15/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
182 words
A thermoplastic container comprising a hollow thermoplastic, cup-shaped body of generally circular, horizontal cross section having a bottom portion and a sidewall portion terminating in a single open end provided with an outwardly turned peripheral flange, said sidewall portion having formed therein a series of vertically disposed, interconnected supporting columns, each of said columns comprising two substantially identical isosceles trapezoids each having a base and a geometrically opposite second side parallel to said base of from 25 to 75 percent of the length of the base, and an elongated rectangular member having a length substantially equal to the length of the base of said trapezoids located on the outermost surface of said cup body, said rectangular member being positioned between and connected to the bases of the said trapezoids with the planes of said trapezoids receding inwardly of the planes of said rectangles by an amount of between 10- 25 degrees and wherein said columns are interconnected through joinder of the opposite second sides of the trapezoids of one column with said opposite second side of the trapezoids of adjacently located columns.
Claim 2
Dependent Claim
182 words
A thermoplastic container comprising a hollow thermoplastic, cup-shaped body of generally circular, horizontal cross section having a bottom portion and a sidewall portion terminating in a single open end provided with an outwardly turned peripheral flange, said sidewall portion having formed therein a series of vertically disposed, interconnected supporting columns, each of said columns comprising two substantially identical isosceles trapezoids each having a base and a geometrically opposite second side parallel to said base of from 25 to 75 percent of the length of the base, and an elongated rectangular member having a length substantially equal to the length of the base of said trapezoids located on the outermost surface of said cup body, said rectangular member being positioned between and connected to the bases of the said trapezoids with the planes of said trapezoids receding inwardly of the planes of said rectangles by an amount of between 10- 25 degrees and wherein said columns are interconnected through joinder of the opposite second sides of the trapezoids of one column with said opposite second side of the trapezoids of adjacently located columns.
Claim 3
Dependent Claim
36 words
The container of claim 1 having a metal lid comprising a central disc portion and an upstanding, continuous, peripheral flange with an outwardly turned portion thereof, circumferentially clinched to the flange portion of the said container.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |