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US3557671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rehabilitation of old asphalt airfields and pavements
Assignee: United States Department of the Air Force
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Filing: 1969-04-18
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Granted: 1971-01-26
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Expires: 1989-04-18
Abstract
Abstract A method for repairing cracked runways and pavements. A mat of fiberglass is placed over the cracked runway or pavement, the mat is rigidized by spraying or painting with a plastic material, and a new layer of asphalt is laid over the rigidized mat. This method permits a saving of asphalt on the order of 50 percent and overcomes the hazard of reflective cracking.
Inventors
- 👤 Angelos Vasiloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:21
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/005; E01C7/00; E01C7/08; E01C7/18; E01C7/187
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
The method of repairing cracked pavement, said method comprising the steps of: a. applying to said cracked pavement a coat of uncured polyester resin; b. laying a layer of fiberglass mat over said uncured resin; c. applying to said fiberglass mat another coat of uncured polyester resin; d. allowing said coats of uncured resin to cure and rigidize said fiberglass mat; and e. laying a layer of asphalt over the rigidized fiberglass mat.
Claim 2
Independent Claim
73 words
The method of repairing cracked pavement, said method comprising the steps of: a. applying to said cracked pavement a coat of uncured polyester resin; b. laying a layer of fiberglass mat over said uncured resin; c. applying to said fiberglass mat another coat of uncured polyester resin; d. allowing said coats of uncured resin to cure and rigidize said fiberglass mat; and e. laying a layer of asphalt over the rigidized fiberglass mat.
Claim 3
Independent Claim
74 words
The method of forming a helicopter pad, said method comprising the steps of: a. applying a coat of uncured polyester resin to the area where said helicopter pad is desired; b. laying down a layer of fiberglass mat over said coat of uncured polyester resin; c. applying a second coat of said uncured polyester resin to said fiberglass mat; and d. allowing said coats of uncured resin to cure and rigidize said fiberglass mat.
Claim 4
Independent Claim
74 words
The method of forming a helicopter pad, said method comprising the steps of: a. applying a coat of uncured polyester resin to the area where said helicopter pad is desired; b. laying down a layer of fiberglass mat over said coat of uncured polyester resin; c. applying a second coat of said uncured polyester resin to said fiberglass mat; and d. allowing said coats of uncured resin to cure and rigidize said fiberglass mat.
References Cited (Backward Citations)
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |