US4162020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-spill device
Assignee: Individual
•
Filing: 1977-06-03
•
Granted: 1979-07-24
•
Expires: 1997-06-03
Abstract
Abstract This relates to an anti-spill device to be utilized in conjunction with a hatch located on the top or roof section of a liquid storage vessel, particularly a petroleum liquid storage vessel. This device is in the form of a pan which is positioned between the hatch and the vessel roof with the pan being configurated for adequately holding on a temporary basis spilled liquid, and the pan having drain means for draining the spill to a suitable storage point.
Inventors
- 👤 Edward O. Kirkland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:54
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/24; Y; Y10; Y10S; Y10S220/00; Y10S220/05
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A storage tank assembly comprising a storage tank having a roof and an upstanding wall, and a hatch with an openable cover carried by said roof adjacent an edge of said roof, said hatch and said roof having mating mounting flanges, and an anti-spill device associated with said hatch for collecting spillage through said hatch, said anti-spill device including a pan having a bottom wall interposed between said hatch mounting flange and said roof mounting flange, said bottom wall of said pan having an access opening therethrough aligned with said hatch and an upstanding peripheral wall, and drain means connected to said pan.
Claim 2
Dependent Claim
103 words
A storage tank assembly comprising a storage tank having a roof and an upstanding wall, and a hatch with an openable cover carried by said roof adjacent an edge of said roof, said hatch and said roof having mating mounting flanges, and an anti-spill device associated with said hatch for collecting spillage through said hatch, said anti-spill device including a pan having a bottom wall interposed between said hatch mounting flange and said roof mounting flange, said bottom wall of said pan having an access opening therethrough aligned with said hatch and an upstanding peripheral wall, and drain means connected to said pan.
Claim 3
Dependent Claim
25 words
The storage tank assembly of claim 1 wherein said pan extends beyond said roof and said drain means are vertically disposed outwardly of said roof.
Claim 4
Dependent Claim
54 words
The storage tank of claim 2 wherein said tank is circular, has a center and is of a preselected radius, said pan bottom wall has an arcuate outer edge portion of a radius from substantially said tank center greater than said tank radius wherein said pan outer edge is generally concentric to said tank.
Claim 5
Dependent Claim
32 words
The storage tank assembly of claim 1 wherein said roof slopes, said bottom wall is generally parallel to said roof and said peripheral wall has a generally horizontally disposed planar upper edge.
Claim 6
Dependent Claim
34 words
The storage tank assembly of claim 1 wherein said hatch mounting flange is secured to said tank mounting flange by a plurality of spaced bolts, and said bolts pass through said pan bottom wall.
Claim 7
Dependent Claim
18 words
The storage tank of claim 1 wherein said hatch cover is freely accessible and openable within said pan.
References Cited (Backward Citations)
US244276A
Cited
US272415A
Cited
US1680060A
Cited
US1352792A
Cited
US1554773A
Cited
US2318462A
Cited
US2406521A
Cited
US2457155A
Cited
US2583725A
Cited
US2554178A
Cited
US2712395A
Cited
US2805631A
Cited
US3410438A
Cited
US4013105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |