US3941556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas control system for a sanitary landfill
Assignee: Individual
•
Filing: 1975-01-08
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Granted: 1976-03-02
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Expires: 1995-01-08
Abstract
Abstract A system for controlling gas migration in a landfill including a gas permeable medium disposed in the trenches constructed for utility pipes to provide horizontal conduits for the gases, and a gas permeable medium disposed around the manholes and/or catch basins communicating with the utility pipes to provide vertical conduits for the gases, the vertical gas conduits communicating with the horizontal gas conduits so as to prevent the gases from entering the utility pipes. The gases are vented to the atmosphere through the manhole covers and/or the catch basin grates by way of gas permeable wall segments disposed between the manhole/catch basin sidewalls and the pavement, or are vented through vertical pipes that extend through the pavement and communicate with the horizontal gas conduits. Alternatively, the gases may be conducted from the horizontal gas conduits to the cellars of adjacent buildings and used as a fuel for heating purposes.
Inventors
- 👤 Frank Pallagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:10
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/14; B; B09; B09B; B09B1/00; B09B1/006; E02D17/00; E02D17/18
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
119 words
A system for controlling gas migration in a landfill into which extends at least one substantially vertical conduit having impermeable walls connected to a substantially horizontal conduit of a utility system, the vertical conduit communicating with the atmosphere through an aperture in a pavemennt overlying the landfill, comprising means forming a space surrounding the vertical conduit and extending from the pavement into the landfill, a gas permeable medium in the vertical conduit surrounding space, and gas permeable conduit forming means disposed between the vertical conduit and the pavement communicating the vertical conduit with the aperture in the pavement, whereby gases from the landfill flow through the gas permeable medium and the gas permeable conduit forming means into the atmosphere.
Claim 2
Independent Claim
119 words
A system for controlling gas migration in a landfill into which extends at least one substantially vertical conduit having impermeable walls connected to a substantially horizontal conduit of a utility system, the vertical conduit communicating with the atmosphere through an aperture in a pavemennt overlying the landfill, comprising means forming a space surrounding the vertical conduit and extending from the pavement into the landfill, a gas permeable medium in the vertical conduit surrounding space, and gas permeable conduit forming means disposed between the vertical conduit and the pavement communicating the vertical conduit with the aperture in the pavement, whereby gases from the landfill flow through the gas permeable medium and the gas permeable conduit forming means into the atmosphere.
Claim 3
Dependent Claim
14 words
The system according to claim 1 wherein the gas permeable medium includes crushed stone.
Claim 4
Dependent Claim
22 words
The system according to claim 1 wherein the gas permeable conduit forming means includes at least one course of gas permeable bricks.
Claim 5
Dependent Claim
122 words
The system according to claim 1 wherein the utility system is a storm sewer system, and also including a cover for the aperture in the pavement, at least the central portion of the cover being impermeable, the cover being spaced above the pavement and the periphery of the cover extending laterally beyond the periphery of the aperture, so that gases from the gas permeable conduit forming means flow upwardly through the aperture in the pavement and outwardly between the pavement and the cover, the gases being vented to the atmosphere through a zone having a perimeter greater than the perimeter of the aperture, and surface water flowing inwardly between the pavement and the cover and downwardly through the aperture in the pavement.
Claim 6
Dependent Claim
61 words
The system according to claim 4 wherein the cover includes a central impermeable substantially flat portion, and a peripheral portion sloping outwardly and downwardly from the central portion to the pavement, the periphery of the central portion being disposed laterally beyond the periphery of the aperture, the peripheral portion including a plurality of apertures for venting the gases to the atmosphere.
Claim 7
Dependent Claim
86 words
The system according to claim 1, also including means forming a space adjacent the horizontal conduit, the horizontal conduit adjacent space communicating with the vertical conduit surrounding space, and a gas permeable medium in the horizontal conduit adjacent space, whereby gases from the landfill flow laterally through the gas permeable medium adjacent the horizontal conduit to the space surrounding the vertical conduit and then flow upwardly through the gas permeable medium surrounding the vertical conduit and through the gas permeable conduit forming means into the atmosphere.
Claim 8
Dependent Claim
25 words
The system according to claim 6, also including a gas impermeable barrier disposed between the pavement and the gas permeable medium adjacent the horizontal conduit.
Claim 9
Dependent Claim
14 words
The system according to claim 7, wherein the gas permeable medium includes crushed stone.
Claim 10
Independent Claim
61 words
A system for controlling gas migration in a landfill over which extends at least one substantially horizontal conduit of a utility system, comprising means forming a space extending generally parallel with the horizontal conduit, a gas permeable medium in the space parallel with the horizontal conduit, and conduit means for conducting gases away from the space parallel with the horizontal conduit.
Claim 11
Independent Claim
61 words
A system for controlling gas migration in a landfill over which extends at least one substantially horizontal conduit of a utility system, comprising means forming a space extending generally parallel with the horizontal conduit, a gas permeable medium in the space parallel with the horizontal conduit, and conduit means for conducting gases away from the space parallel with the horizontal conduit.
Claim 12
Dependent Claim
40 words
The system according to claim 9, wherein a pavement overlies the landfill, and the conduit means extends from the space parallel with the horizontal conduit through the pavement so as to vent the gases from the landfill to the atmosphere.
Claim 13
Dependent Claim
95 words
The system according to claim 10, wherein the horizontal conduit communicates with at least one substantially vertical conduit having impermeable walls, and also including means forming a space surrounding the vertical conduit, the vertical conduit surrounding space communicating with the space parallel with the horizontal conduit, and a gas permeable medium in the vertical conduit surrounding space, whereby gases from the landfill flow upwardly through the gas permeable medium surrounding the vertical conduit and then flow laterally through the gas permeable medium parallel with the horizontal conduit to the conduit means extending through the pavement.
Claim 14
Dependent Claim
102 words
The system according to claim 9, wherein the gas permeable medium parallel with the horizontal conduit and from which the conduit means conducts gases is spaced from the horizontal conduit, and also including means forming substantially vertical passageways extending between the horizontal conduit and the gas permeable medium parallel therewith at spaced locations along the horizontal conduit, and a gas permeable medium in the vertical passageways, whereby gases from the landfill flow upwardly through the gas permeable medium in the vertical passageways and then flow laterally through the gas permeable medium parallel with the horizontal conduit to the gas conducting conduit means.
Claim 15
Dependent Claim
38 words
The system according to claim 9, also including perforated conduit means disposed in the gas permeable medium parallel with the horizontal conduit and extending generally parallel therewith, the perforated conduit means communicating with the gas conducting conduit means.
Claim 16
Dependent Claim
40 words
The system according to claim 9, wherein a building is located adjacent the horizontal conduit and the building contains equipment including a burner, and the gas conducting conduit means communicates with the burner so as to feed the gases thereto.
Claim 17
Dependent Claim
23 words
The system according to claim 14, also including a gas impermeable barrier disposed above the gas permeable medium parallel with the horizontal conduit.
Claim 18
Dependent Claim
74 words
The system according to claim 14, also including means forming a space beneath the building, a gas permeable medium in the space beneath the building, and conduit means communicating the gas permeable medium beneath the building with the gas conducting conduit means, whereby the gases beneath the building flow through the gas permeable medium beneath the building and through the communicating conduit means to the gas conducting conduit means and thence to the burner.
Claim 19
Dependent Claim
24 words
The system according to claim 16, also including a gas impermeable barrier disposed between the building and the gas permeable medium beneath the building.
References Cited (Backward Citations)
US3525674A
Cited
US3822983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |