US5252000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free product collector and method
Assignee: Individual
•
Filing: 1992-06-24
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Granted: 1993-10-12
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Expires: 2012-06-24
Abstract
Abstract A device disposed within a monitoring well in a fuel filling station environmental area to collect for withdrawal from said well fuel leakage from reservoir or storage tanks present in the area.
Inventors
- 👤 Clifford E. Mohs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:39
CPC Classifications
B; B09; B09C; B09C1/00; B09C1/002; B09C1/007; E; E21; E21B; E21B27/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
172 words
A passive free product collection structure in connection with a monitor well casing, comprising a cylindrical member adapted to be suspended within a monitor well casing, said cylindrical member having a slotted portion positioned to be at the interface of a water table and the free product, a reservoir extending below said cylinder being releasably sealed thereto, said cylindrical member and said reservoir respectively having top walls having vertically aligned openings, a pipe disposed into said cylinder through said opening therein and extending to said opening of said reservoir, said pipe being sealed to said top wall of said reservoir about said opening therein, a tube disposed within said cylinder about said pipe being radially spaced therebetween and extending to said top wall of said reservoir, and a continuous wick disposed over the sides of said tube, said wick repelling water and by capillary action selectively absorbing and collecting said free product from said water table, a siphoning action being established through said wick to drain said free product into said reservoir.
Claim 2
Dependent Claim
172 words
A passive free product collection structure in connection with a monitor well casing, comprising a cylindrical member adapted to be suspended within a monitor well casing, said cylindrical member having a slotted portion positioned to be at the interface of a water table and the free product, a reservoir extending below said cylinder being releasably sealed thereto, said cylindrical member and said reservoir respectively having top walls having vertically aligned openings, a pipe disposed into said cylinder through said opening therein and extending to said opening of said reservoir, said pipe being sealed to said top wall of said reservoir about said opening therein, a tube disposed within said cylinder about said pipe being radially spaced therebetween and extending to said top wall of said reservoir, and a continuous wick disposed over the sides of said tube, said wick repelling water and by capillary action selectively absorbing and collecting said free product from said water table, a siphoning action being established through said wick to drain said free product into said reservoir.
Claim 3
Dependent Claim
17 words
The structure of claim 1, wherein said tube being sealed to said top wall of said reservoir.
Claim 4
Dependent Claim
29 words
The structure of claim 1, wherein said pipe has an upper threaded portion extending upwardly of said cylinder, and a nut having an upwardly projecting loop secures said pipe.
Claim 5
Dependent Claim
13 words
The structure of claim 1, wherein said reservoir has a bottom drain plug.
Claim 6
Independent Claim
174 words
The method of passively collecting a free product from a groundwater monitoring well, consisting of the steps of suspending a cylinder in a monitor well casing, slotting a portion of the side wall of said cylinder and positioning said slotted portion to be at the interface of a water table and a free product, extending a reservoir below said cylinder, forming a top wall on said cylinder and a top wall on said reservoir, forming vertically aligned holes in said top wall of said cylinder and said reservoir, extending a pipe through said hole in said cylinder down to said hole in said top wall of said reservoir and sealing the same to said top wall of said reservoir about said hole therein, disposing a tube into said cylinder radially spaced between said pipe and said cylinder, overlying the sides of said tube with a wick adapted to selectively absorb said free product and be repellant to water, and establishing a siphoning action through said wick to drain said free product into said reservoir.
Claim 7
Independent Claim
174 words
The method of passively collecting a free product from a groundwater monitoring well, consisting of the steps of suspending a cylinder in a monitor well casing, slotting a portion of the side wall of said cylinder and positioning said slotted portion to be at the interface of a water table and a free product, extending a reservoir below said cylinder, forming a top wall on said cylinder and a top wall on said reservoir, forming vertically aligned holes in said top wall of said cylinder and said reservoir, extending a pipe through said hole in said cylinder down to said hole in said top wall of said reservoir and sealing the same to said top wall of said reservoir about said hole therein, disposing a tube into said cylinder radially spaced between said pipe and said cylinder, overlying the sides of said tube with a wick adapted to selectively absorb said free product and be repellant to water, and establishing a siphoning action through said wick to drain said free product into said reservoir.
Claim 8
Dependent Claim
32 words
The method of claim 5, including the steps of attaching a drain to said reservoir, withdrawing said cylinder and reservoir from said well casing, and draining said free product from said reservoir.
Claim 9
Dependent Claim
13 words
The method of claim 5, including slotting the lower portion of said pipe.
Claim 10
Dependent Claim
16 words
The method of claim 5, including sealing said tube to said top wall of said reservoir.
Claim 11
Dependent Claim
12 words
The method of claim 5, including sealing said cylinder to said reservoir.
Claim 12
Dependent Claim
15 words
The structure of claim 1, wherein said wick is formed as a doubled over sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-11 | 1997-04-12 | 1997-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-11 | 2001-04-12 | 2001-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-11 | 2005-04-12 | 2005-10-12 | $7700.00 | Window Closed / Lapsed |