US4023680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bakery tray
Assignee: Dare Plastics Inc
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Filing: 1971-09-22
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Granted: 1977-05-17
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Expires: 1991-09-22
Abstract
Abstract A unitary molded plastic tray which is stackable for purposes of transporting bakery goods and the like therein and which is nestable for purposes of empty tray storage. The tray has two opposed high profile end walls and two low profile side walls as well as a bottom made from a grid of intersecting ribs. The tray is so configurated that like trays may be stacked one upon the other when similarly oriented and may be nested one within the other when one tray is rotated 90° with respect to the other. The gridwork of bottom ribs are generally T-shaped in cross sectional configuration and extend diagonally across the bottom at an angle of approximately 45° to the side and end walls so that the bottom structure resists torsional deflection under uneven loading conditions as well as vertical deflection from excessively heavy loads.
Inventors
- 👤 Paul G. Thurman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:56
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/34; B65D21/00; B65D21/02; B65D21/04; B65D21/043; B65D21/046
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A unitary molded plastic nesting and stacking tray for storing and transporting bakery goods and the like, said tray being rectangular when viewed in a top plan view and having a bottom wall, a pair of opposed end walls, and a pair of opposed side walls, said end walls being substantially shorter in length than said side walls and said side walls being substantially shorter in height than said end walls whereby a like tray in like orientation may be stacked thereon and when oriented at 90° with respect to a like tray may be nested therein, said end walls because of their greater height and shorter length having substantially greater resistance to torsional flexure of the tray than said side walls, the improvement wherein said bottom wall consists of a plurality of crossing ribs defining rows of openings therebetween, said bottom ribs being T-shaped in cross section and extending diagonally across the bottom of said tray at an acute angle to the side and end walls.
Claim 2
Dependent Claim
167 words
A unitary molded plastic nesting and stacking tray for storing and transporting bakery goods and the like, said tray being rectangular when viewed in a top plan view and having a bottom wall, a pair of opposed end walls, and a pair of opposed side walls, said end walls being substantially shorter in length than said side walls and said side walls being substantially shorter in height than said end walls whereby a like tray in like orientation may be stacked thereon and when oriented at 90° with respect to a like tray may be nested therein, said end walls because of their greater height and shorter length having substantially greater resistance to torsional flexure of the tray than said side walls, the improvement wherein said bottom wall consists of a plurality of crossing ribs defining rows of openings therebetween, said bottom ribs being T-shaped in cross section and extending diagonally across the bottom of said tray at an acute angle to the side and end walls.
Claim 3
Dependent Claim
22 words
The tray of claim 1 in which the cross bars of the T-shaped ribs form the bottom inside surface of the tray.
Claim 4
Dependent Claim
28 words
The tray of claim 1 in which said ribs extend across the bottom of said tray at an angle of approximately 45° with said side and end walls.
Claim 5
Dependent Claim
222 words
A unitary molded plastic nesting and stacking tray for storing and transporting bakery goods and the like, said tray being rectangular when viewed in a top plan view and having a bottom wall, a pair of opposed end walls, and a pair of opposed side walls, each of said end walls having a ridge extending across the top from one side wall to the other and a downwardly opening recess extending across the bottom from one side wall to the other, said end walls being substantially shorter in length than said side walls and said side walls being substantially shorter in height than said end walls whereby a like tray in like orientation may be stacked thereon and when oriented at 90° with respect to a like tray may be nested therein, said trays when stacked having end wall ridges of one tray received in end wall recesses of a like tray, said end walls because of their greater height and shorter length having substantially greater resistance to torsional flexure of the tray than said side walls, the improvement wherein said bottom wall consists of a plurality of crossing ribs defining rows of openings therebetween, said bottom ribs being T-shaped in cross section and extending diagonally across the bottom of said tray at an acute angle to the side and end walls.
Claim 6
Dependent Claim
222 words
A unitary molded plastic nesting and stacking tray for storing and transporting bakery goods and the like, said tray being rectangular when viewed in a top plan view and having a bottom wall, a pair of opposed end walls, and a pair of opposed side walls, each of said end walls having a ridge extending across the top from one side wall to the other and a downwardly opening recess extending across the bottom from one side wall to the other, said end walls being substantially shorter in length than said side walls and said side walls being substantially shorter in height than said end walls whereby a like tray in like orientation may be stacked thereon and when oriented at 90° with respect to a like tray may be nested therein, said trays when stacked having end wall ridges of one tray received in end wall recesses of a like tray, said end walls because of their greater height and shorter length having substantially greater resistance to torsional flexure of the tray than said side walls, the improvement wherein said bottom wall consists of a plurality of crossing ribs defining rows of openings therebetween, said bottom ribs being T-shaped in cross section and extending diagonally across the bottom of said tray at an acute angle to the side and end walls.
Claim 7
Dependent Claim
22 words
The tray of claim 1 in which the cross bars of the T-shaped ribs form the bottom inside surface of the tray.
Claim 8
Dependent Claim
28 words
The tray of claim 1 in which said ribs extend across the bottom of said tray at an angle of approximately 45° with said side and end walls.
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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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |