US4097172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-patching
Assignee: Atlantic Richfield Co
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Filing: 1976-12-21
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Granted: 1978-06-27
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Expires: 1996-12-21
Abstract
Abstract Improved cold patching of pavements, drives, walks, or the like, is obtained by applying to or mixing with the patching material a solution of thermoplastic polymeric resin. When the solution has evaporated or the solvent is volatilized, the patch and the surrounding area are reinforced and more thoroughly bonded together. If the area requiring repair has appreciable depth, it is preferable that the margins of the repair area receive an application of the polymeric resin solution so that the bond between the patch and the adjacent area is reinforced and made more secure.
Inventors
- 👤 Gerald W. Burkhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:45
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/187; E01C11/00; E01C11/005; E01C7/26; E01C7/265
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
In the method of cold patch repairing deteriorated paved areas by the addition of cold patch asphalt material, the step which comprises applying to the cold patch material prior to its application a polymeric thermoplastic resin dissolved in a volatile solvent whereby when the solvent has volatilized, said polymeric resin is present in both the patch material and the adjacent deteriorated paved areas to interconnect the same and the patch and the patched area are reinforced and more firmly adhered together by the presence of said polymeric resin.
Claim 2
Dependent Claim
88 words
In the method of cold patch repairing deteriorated paved areas by the addition of cold patch asphalt material, the step which comprises applying to the cold patch material prior to its application a polymeric thermoplastic resin dissolved in a volatile solvent whereby when the solvent has volatilized, said polymeric resin is present in both the patch material and the adjacent deteriorated paved areas to interconnect the same and the patch and the patched area are reinforced and more firmly adhered together by the presence of said polymeric resin.
Claim 3
Dependent Claim
30 words
The method of claim 1 in which the solution of thermoplastic resin is applied adjacent the location of the patch and allowed to penetrate thereinto before the patch is applied.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which the thermoplastic resin is polystyrene.
Claim 5
Dependent Claim
11 words
The method of claim 1 in which the solvent is toluene.
Claim 6
Independent Claim
107 words
The method of repairing by cold patching a deteriorated pavement surface area which comprises: a. applying polystyrene dissolved in a volatile solvent to the deteriorated pavement area, b. applying polystyrene dissolved in a volatile solvent to the cold patch material, c. placing the treated cold patch material in the treated cavity of the deteriorated area, d. applying pressure to said patched area, e. allowing the solvent to volatilize and leaving deposited therethrough the polystyrene, whereby said deteriorated area and the cold patch applied thereto are interconnected by said polystyrene throughout the patch and the surrounding area to securely connect the cold patch material to the surrounding area.
Claim 7
Independent Claim
107 words
The method of repairing by cold patching a deteriorated pavement surface area which comprises: a. applying polystyrene dissolved in a volatile solvent to the deteriorated pavement area, b. applying polystyrene dissolved in a volatile solvent to the cold patch material, c. placing the treated cold patch material in the treated cavity of the deteriorated area, d. applying pressure to said patched area, e. allowing the solvent to volatilize and leaving deposited therethrough the polystyrene, whereby said deteriorated area and the cold patch applied thereto are interconnected by said polystyrene throughout the patch and the surrounding area to securely connect the cold patch material to the surrounding area.
Claim 8
Dependent Claim
24 words
The method described in claim 5 in which the solution of polystyrene is thoroughly admixed with the cold patch material prior to its application.
Claim 9
Dependent Claim
68 words
In the method of cold patching pavement areas by applying a cold patch material to the deteriorated area and adhering the patch thereto by pressure, the step which comprises admixing with the cold patch material about 5 to 10% of a solution of thermoplastic resin containing about 20 to 30% by weight of said resin in a volatile solvent prior to applying said patch to said deteriorated area.
Claim 10
Dependent Claim
68 words
In the method of cold patching pavement areas by applying a cold patch material to the deteriorated area and adhering the patch thereto by pressure, the step which comprises admixing with the cold patch material about 5 to 10% of a solution of thermoplastic resin containing about 20 to 30% by weight of said resin in a volatile solvent prior to applying said patch to said deteriorated area.
Claim 11
Dependent Claim
27 words
The method of cold patching in claim 7 in which the solution of thermoplastic resin is also applied to the area adjacent the location to be patched.
References Cited (Backward Citations)
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Cited
US2413901A
Cited
US2934452A
Cited
US3891585A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |