US3870422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous pavement
Assignee: Individual
•
Filing: 1974-06-07
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Granted: 1975-03-11
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Expires: 1994-06-07
Abstract
Abstract This invention relates to a porous pavement for parking spaces, roadways, or streets, airfield runways and the like and it provides a porous pavement for such surfaces which allows water to pass through at a high absorption rate, thereby reducing water run-off and reducing flooding, and also allows pollutants to pass through the pavement to the sub-soil, reducing to a great extent the run-off of polluted water to lakes, rivers, bays and oceans. The invention comprises a paving admixture of aggregate, cement and a liquid adhesive mixture to ensure a firm pavement surface and at the same time providing voids or openings between the aggregates in the material to allow water to percolate therethrough.
Inventors
- 👤 Jr John J Medico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:48
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/10; E01C7/14; E01C11/00; E01C11/22; E01C11/224; E01C11/225; E01C11/226; E01C3/00; E01C7/142; Y; Y02; Y02A; Y02A10/00; Y02A10/30; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
63 words
A pavement for ground surfaces, such as parking lots, roadways, etc. formed of a mixture of aggregates, cement and an admixture of water and an adhesive compatible with water and cement to form a compact surface having voids between the aggregates to provide a porous hard surface of pavement and allow water to percolate through the voids to the surface below the pavement.
Claim 2
Dependent Claim
63 words
A pavement for ground surfaces, such as parking lots, roadways, etc. formed of a mixture of aggregates, cement and an admixture of water and an adhesive compatible with water and cement to form a compact surface having voids between the aggregates to provide a porous hard surface of pavement and allow water to percolate through the voids to the surface below the pavement.
Claim 3
Dependent Claim
63 words
A pavement for ground surfaces, such as parking lots, roadways, etc. formed of a mixture of aggregates, cement and an admixture of water and an adhesive compatible with water and cement to form a compact surface having voids between the aggregates to provide a porous hard surface of pavement and allow water to percolate through the voids to the surface below the pavement.
Claim 4
Dependent Claim
63 words
A pavement for ground surfaces, such as parking lots, roadways, etc. formed of a mixture of aggregates, cement and an admixture of water and an adhesive compatible with water and cement to form a compact surface having voids between the aggregates to provide a porous hard surface of pavement and allow water to percolate through the voids to the surface below the pavement.
Claim 5
Dependent Claim
29 words
A pavement for ground surfaces, as claimed in claim 1, wherein the admixture of water and adhesive consists of approximately three parts of water to one part of adhesive.
Claim 6
Dependent Claim
22 words
A pavement for ground surfaces, as claimed in claim 1, wherein the aggregates have diameters of approximately one quarter of an incH.
Claim 7
Dependent Claim
35 words
A pavement for ground surfaces, as claimed in claim 1, wherein the pavement includes a porous supporting sub-surface composed of aggregates which allows the water seeping through the porous pavement to pass to sub-soil therebeneath.
Claim 8
Dependent Claim
84 words
A pavement for ground surfaces, as claimed in claim 1, wherein the pavement includes a porous sub-surface composed of aggregates approximately the size of the aggregates in the pavement and a second sub-surface of aggregates below the first sub-surface aggregates and being a larger size than the aggregates in the first sub-surfaces, the said sub-surfaces with the voids between the aggregates therein provide substantially a reservoir for receiving water percolating through the uppermost paving surface until the water is absorbed by the sub-soil therebeneath.
Claim 9
Dependent Claim
38 words
A pavement for ground surfaces, as claimed in claim 1, wherein an air-entraining agent is added to the adhesive mixture to cause formation of bubbles therein and ensure the formation of the water percolating voids between the aggregates.
Claim 10
Dependent Claim
27 words
A pavement for ground surfaces, as claimed in claim 1, wherein the adhesive fluid mixture includes an adhesive mixture of chemicals containing molecules with long branch chains.
Claim 11
Dependent Claim
72 words
A pavement for ground surfaces comprising a mixture of cement and aggregates of approximately having one quarter inch diameter and a liquid mixing agent having high adhesive properties mixed with cement and aggregates to form a compact surface, said liquid admixture including an air entraining agent for forming bubbles in the liquid mixture which results in voids between aggregates to allow water and any contained pollutants to percolate through the paving surface.
Claim 12
Dependent Claim
72 words
A pavement for ground surfaces comprising a mixture of cement and aggregates of approximately having one quarter inch diameter and a liquid mixing agent having high adhesive properties mixed with cement and aggregates to form a compact surface, said liquid admixture including an air entraining agent for forming bubbles in the liquid mixture which results in voids between aggregates to allow water and any contained pollutants to percolate through the paving surface.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |