Patent US4930632A successfully refreshed from Google Patents.
US4930632A
Expired / Lapsed
US
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Hazardous liquid containment tray
Assignee: Containment Corp
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Filing: 1988-12-05
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Granted: 1990-06-05
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Expires: 2008-12-05
Abstract
Abstract There is disclosed a containment tray which is formed of plastic which is molded into a tray having upright perimeter walls and a bottom wall having transverse channels in its undersurface for receiving the conventional arms of a forklift or pallet jack. The tray can be formed by vacuum thermal forming, in which case it is used in combination with a platform insert formed by a pair of beams which are received within the tray and which support transverse rails thereby forming an upper platform. Alternatively, the tray can be rotationally molded and the raised platform can be molded into the tray in the form of a plurality of upstanding plugs. In either embodiment, the upper planar surface of the raised platform is positioned above the level of the upper edges of the side walls of the tray whereby a conventional forklift can deposit loads of containers mounted on standard wooden pallets onto the raised platform of the tray, and remove those pallets, when desired.
Inventors
- 👤 Robert L. Eckert
- 👤 Don C. Atkins
- 👤 Lee Sechler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:35
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/0004; B65D19/0053; B65D19/0055; B65D19/0057; B65D19/0061; B65D19/0065; B65D19/0006; B65D19/003; B65D19/0032; B65D19/0036; B65D19/004; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00029; B65D2519/00049; B65D2519/00069; B65D2519/00258; B65D2519/00283; B65D2519/00293; B65D2519/00298; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00338; B65D2519/00368; B65D2519/00378; B65D2519/00547; B65D2519/00552; B65D2519/00557; B65D2519/00567; B65D2519/00736; B65D2519/008; B65D2519/00935; B65D2519/0094; Y; Y10; Y10S; Y10S108/00; Y10S108/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A hazardous liquid containment structure comprising the combination of: a. a tray having: (1) a base; (2) substantially vertical side walls entirely surrounding the base to form a containment pan with their upper edges lying in a common plane; (3) a pair of parallel, transverse grooves formed by indentations molded in the bottom wall of said base, spaced apart a sufficient distance and of a sufficient width to receive therein the fork members of a fork lift; and (4) a plurality of reinforcement ribs transverse to said grooves; and b. a pallet support member resting within said tray and comprising: (1) at least a pair of spaced-apart beam members having a vertical height at least equal to the height of said vertical walls; and (2) a plurality of transverse rails supported by and attached to said beam members, thereby forming a platform to support a storage pallet above said plane.
Claim 2
Dependent Claim
150 words
A hazardous liquid containment structure comprising the combination of: a. a tray having: (1) a base; (2) substantially vertical side walls entirely surrounding the base to form a containment pan with their upper edges lying in a common plane; (3) a pair of parallel, transverse grooves formed by indentations molded in the bottom wall of said base, spaced apart a sufficient distance and of a sufficient width to receive therein the fork members of a fork lift; and (4) a plurality of reinforcement ribs transverse to said grooves; and b. a pallet support member resting within said tray and comprising: (1) at least a pair of spaced-apart beam members having a vertical height at least equal to the height of said vertical walls; and (2) a plurality of transverse rails supported by and attached to said beam members, thereby forming a platform to support a storage pallet above said plane.
Claim 3
Dependent Claim
23 words
The structure of claim 1 wherein said beam members have spaced-apart notches along their lower edges to receive said grooves of said base.
Claim 4
Dependent Claim
33 words
The structure of claim 1 in further combination with a pallet received and resting on the upper edges of said beams entirely above the upper edges of said side wall of said tray.
Claim 5
Dependent Claim
25 words
The structure of claim 3 in further combination with at least one container of a hazardous liquid resting on the upper surface of said pallet.
Claim 6
Dependent Claim
15 words
The structure of claim 1 wherein said tray is formed by thermoforming of sheet plastic.
Claim 7
Dependent Claim
17 words
The structure of claim 1 wherein said tray has a storage capacity from 55 to 100 gallons.
Claim 8
Dependent Claim
28 words
The structure of claim 1 wherein said side walls are slightly tapered upwardly and outwardly, whereby a plurality of said trays can be stacked in a nested array.
Claim 9
Dependent Claim
24 words
The structure of claim 6 wherein said side walls are inclined outwardly at an angle from 3 to about 10 degrees from the vertical.
Claim 10
Dependent Claim
21 words
The structure of claim 1 wherein said side walls have an coextensive, upper outwardly directed lip having a downwardly curled edge.
Claim 11
Dependent Claim
20 words
The structure of claim 1 wherein said reinforcement ribs comprise inward indentations molded into said bottom wall of said base.
References Cited (Backward Citations)
US3480178A
Cited
US3659741A
Cited
US3776435A
Cited
US3944070A
Cited
US3961707A
Cited
US4007961A
Cited
US3968895A
Cited
US3999653A
Cited
US4361232A
Cited
US4426015A
Cited
US4580680A
Cited
US4480748A
Cited
US4550830A
Cited
US4653651A
Cited
US4585143A
Cited
US4527707A
Cited
US4675373A
Cited
US4667823A
Cited
US4643314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |