Patent US3785544A successfully refreshed from Google Patents.
US3785544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray with strengthening member
Assignee: Phillips Petroleum Co
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Filing: 1972-05-15
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Granted: 1974-01-15
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Expires: 1992-05-15
Abstract
Abstract An article of manufacture comprising in combination, a rectangularly shaped tray having sloping sidewalls terminating in a flanged rim, a film closure sealed to the top of the tray rim, and a U-shaped strengthening member having a first flange portion sealed to a lower rim surface on one side of the tray, extending downwardly across the bottom of the tray and upwardly to the lower surface of the rim on a second side of the tray wherein a second flange portion of the U-shaped sheet is sealed thereto.
Inventors
- 👤 E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:23
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D25/00; B65D25/34; B65D77/04; B65D77/0446; B65D77/0453; B65D77/046
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
An article of manufacture comprising in combination, a tray having a bottom wall with sloping sidewalls extending upwardly from the peripheral of the tray bottom wall terminated in a flat, flanged rim having upper and lower surfaces; a cover closure film sealed to the upper surface of the rim; and a U-shaped strengthening member of sheet material having a first flanged portion sealed to the lower surface of the rim on a first side of the tray and extended downwardly from said sealed first flanged portion across the bottom wall and upwardly to the lower surface of the rim on a second side of the tray, said strengthening member terminating in a second flanged portion sealed to the lower surface of the rim on the second side of the tray.
Claim 2
Dependent Claim
130 words
An article of manufacture comprising in combination, a tray having a bottom wall with sloping sidewalls extending upwardly from the peripheral of the tray bottom wall terminated in a flat, flanged rim having upper and lower surfaces; a cover closure film sealed to the upper surface of the rim; and a U-shaped strengthening member of sheet material having a first flanged portion sealed to the lower surface of the rim on a first side of the tray and extended downwardly from said sealed first flanged portion across the bottom wall and upwardly to the lower surface of the rim on a second side of the tray, said strengthening member terminating in a second flanged portion sealed to the lower surface of the rim on the second side of the tray.
Claim 3
Dependent Claim
29 words
An article of manufacture according to claim 1 wherein the tray is thermoformed having irregularly shaped sidewalls which slope outwardly from the bottom wall peripheral to the flanged rim.
Claim 4
Dependent Claim
31 words
An article of manufacture according to claim 1 wherein the U-shaped strengthening member is comprised of paperboard which is extended downwardly at right angles from the first and second fLanged portions.
Claim 5
Dependent Claim
19 words
An article of manufacture according to claim 1 wherein the U-shaped paperboard flange portions are heat melt adhesive coated.
Claim 6
Dependent Claim
72 words
An article of manufacture according to claim 1 wherein the tray is a thermoformed tray having irregularly shaped sidewalls with strengthening members therein, the U-shaped strengthening member is comprised of paperboard which is extended downwardly at right angles from the first and second flange portions, said flange portions having a coating of hot melt adhesive thereon, and the U-shaped strengthening member completely covers two sides and the bottom wall of the tray.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |