Patent US4792815A successfully refreshed from Google Patents.
Patent US3850361A successfully refreshed from Google Patents.
US3850361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Containers
Assignee: ITW Ltd
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Filing: 1972-09-13
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Granted: 1974-11-26
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Expires: 1992-09-13
Abstract
Abstract A disposable cup provided with a gift token to promote sales, the cup being double walled, and having a portion which is defined by a line of weakness and which can be detached to constitute the token, or which can be bent back to reveal the token. The token is preferably the central part of the outer bottom wall, and includes a tab which projects to the bottom edge for easy detachment.
Inventors
- 👤 R Day
- 👤 J Blyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:00
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/22; B65D1/26; B65D1/265; Y; Y10; Y10S; Y10S206/00; Y10S206/831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A disposable plastic cup comprising an outer cup and an inner cup disposed within said outer cup with an insulating air space therebetween, the upper end of said inner cup curled outwardly and downwardly over the upper end of said outer cup to join said inner and outer cups together and to form a drinking rim, the bottom wall of said inner cup being substantially flat, the bottom wall of said outer cup having a circular center portion, a first annular wall extending upwardly from said circular center portion, a second annular wall extending from the top of said first annular wall downwardly and outwardly to the lower end of the side wall of said outer cup whereby said first and second annular walls form an annular upwardly projecting supporting rib immediately beneath said flat bottom wall of said inner cup, the junction of said first and second annular walls being formed as a circular weakened line which is discontinuous over one segment thereof, and radial weakened lines extending from the ends of said circular weakened line to the side wall of said outer cup to form a frangible tab for fracturing and removing said circular center portion.
Claim 2
Dependent Claim
198 words
A disposable plastic cup comprising an outer cup and an inner cup disposed within said outer cup with an insulating air space therebetween, the upper end of said inner cup curled outwardly and downwardly over the upper end of said outer cup to join said inner and outer cups together and to form a drinking rim, the bottom wall of said inner cup being substantially flat, the bottom wall of said outer cup having a circular center portion, a first annular wall extending upwardly from said circular center portion, a second annular wall extending from the top of said first annular wall downwardly and outwardly to the lower end of the side wall of said outer cup whereby said first and second annular walls form an annular upwardly projecting supporting rib immediately beneath said flat bottom wall of said inner cup, the junction of said first and second annular walls being formed as a circular weakened line which is discontinuous over one segment thereof, and radial weakened lines extending from the ends of said circular weakened line to the side wall of said outer cup to form a frangible tab for fracturing and removing said circular center portion.
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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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |