US4096986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food tray with integral lock
Assignee: Mobil Oil AS
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Filing: 1976-07-23
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Granted: 1978-06-27
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Expires: 1996-07-23
Abstract
Abstract A foamed plastic food tray having a cover of the same material hinged to one side of the tray, is formed with a simple, secure latch constituted by a slotted portion of a strengthening rim on the periphery of the tray and an outwardly projecting flute with a flared out terminus on the front of the cover.
Inventors
- 👤 John Florian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/14; B65D43/16; B65D43/162; B65D2251/00; B65D2251/10; B65D2251/1016; B65D2251/1025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A thermoplastic container comprising two dishlike sections which are hinged together along a common side by an integral flexible hingeline, cooperating locking means on each of said sections remove from said hingeline for releasably locking said sections together one of said locking means on one of said sections comprising an outwardly projecting flute which terminates in an outwardly flared arrow head shaped skirt, said second locking means on said other section comprising an upwardly inclined lip on a portion of the periphery of said other section, said lip having a central cut out slot adapted to receive, in locking engagement, said arrow head shaped skirt, said arrow head shaped skirt being compressed by finger action for insertion into said slot so that when said compression is released said arrow head shaped skirt expands in said slot to a locked position.
Claim 2
Dependent Claim
140 words
A thermoplastic container comprising two dishlike sections which are hinged together along a common side by an integral flexible hingeline, cooperating locking means on each of said sections remove from said hingeline for releasably locking said sections together one of said locking means on one of said sections comprising an outwardly projecting flute which terminates in an outwardly flared arrow head shaped skirt, said second locking means on said other section comprising an upwardly inclined lip on a portion of the periphery of said other section, said lip having a central cut out slot adapted to receive, in locking engagement, said arrow head shaped skirt, said arrow head shaped skirt being compressed by finger action for insertion into said slot so that when said compression is released said arrow head shaped skirt expands in said slot to a locked position.
References Cited (Backward Citations)
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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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |