Patent US4155451A successfully refreshed from Google Patents.
US4155451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-skid paperboard tray
Assignee: Stone Container Corp
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Filing: 1978-05-09
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Granted: 1979-05-22
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Expires: 1998-05-09
Abstract
Abstract A disposable paperboard tray for retaining lading during transport and storage with a number of loaded trays stacked one on top of the other. The floor or bottom wall of the tray has a plurality of punched, spaced apart score lines or perforations which are not cut entirely through the floor whereby to provide a selective arrangement of protuberances on the bottom outside surface of the floor. When a plurality of trays carrying lading, such as conventional canned foods, are stacked one on top of the other, the protuberances engage the upper ends of the cans stacked in a nether tray to prevent one tray from sliding or inadvertently slipping one relative to its neighbor.
Inventors
- 👤 H. Glen Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:22
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/70; B65D5/00; B65D5/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A paperboard tray for retaining lading between upstanding walls of the tray, the lading having upper ends extending above the walls and presenting a non-planar supporting surface for the positioning thereon of a similar lading-loaded tray in a stack, said tray comprising, a floor member between the walls, the floor having a top surface upon which the lading rests and a bottom surface, a plurality of integral fiber-like protuberant means on the bottom surface of and extending from said surface whereby in a stack of such trays the protuberant means of one tray engage upper ends of the articles in the next lower tray in a stack of such trays to prevent one tray from slipping inadvertently relative to the other, and in which said protuberant means are formed as parts of perforations in said top surface extending toward said bottom surface and projecting downwardly therefrom.
Claim 2
Dependent Claim
146 words
A paperboard tray for retaining lading between upstanding walls of the tray, the lading having upper ends extending above the walls and presenting a non-planar supporting surface for the positioning thereon of a similar lading-loaded tray in a stack, said tray comprising, a floor member between the walls, the floor having a top surface upon which the lading rests and a bottom surface, a plurality of integral fiber-like protuberant means on the bottom surface of and extending from said surface whereby in a stack of such trays the protuberant means of one tray engage upper ends of the articles in the next lower tray in a stack of such trays to prevent one tray from slipping inadvertently relative to the other, and in which said protuberant means are formed as parts of perforations in said top surface extending toward said bottom surface and projecting downwardly therefrom.
Claim 3
Dependent Claim
28 words
A paperboard tray as claimed in claim 1 in which the means are protuberances arranged in a plurality of spaced apart, closed geometric formations upon the bottom surface.
Claim 4
Dependent Claim
27 words
A paperboard tray as claimed in claim 1 in which the lading is a plurality of cans and the protuberant means engage the rims of said cans.
Claim 5
Dependent Claim
37 words
A paperboard tray as claimed in claim 3 in which said protuberant means are arranged in a plurality of circular formations spaced apart along said bottom surface the major extent thereof for advantageous engagement with the cans.
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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |