Patent US3822556A successfully refreshed from Google Patents.
US3822556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laying wide asphaltic open mesh reinforced strips
Assignee: Bitumarin BV
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Filing: 1972-01-07
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Granted: 1974-07-09
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Expires: 1992-01-07
Abstract
Abstract A water retaining earth surface is lined with a reinforced layer of asphalt in which a unilaterally externally reinforced wide strip of asphaltic mastic wound onto a reel is unwound onto the surface to be lined in such a way that the reinforced surface faces earth surface.
Inventors
- 👤 A Cramwinckel
- 👤 R Reintjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:13
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/52; E01C19/522; E01C19/12; E01C19/18; E01C19/182; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/121; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1788; Y10T156/179
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
A method of impermeabilizing a water retaining surface with a unilaterally reinforced asphalt mastic strip which comprises: a. winding upon a reel, having a diameter of at least one meter, a wide unilaterally reinforced asphalt mastic strip, having a thickness of at the most 2.5 cm., externally reinforced with a guaze the meshes of which are so dimensioned so that the greater portion of the mineral matter contained in said asphalt can pass through the meshes, said mastic comprising mineral matter and a bitumen mixture composed of straight-run bitumen and blown bitumen; b. unwinding said unilaterally reinforced asphalt mastic strip from said reel onto said surface to be impermeabilized in such a way that the reinforced side of the mastic strip faces said surface, the mastic strip being unwound with the unwinding part sagging freely.
Claim 2
Independent Claim
135 words
A method of impermeabilizing a water retaining surface with a unilaterally reinforced asphalt mastic strip which comprises: a. winding upon a reel, having a diameter of at least one meter, a wide unilaterally reinforced asphalt mastic strip, having a thickness of at the most 2.5 cm., externally reinforced with a guaze the meshes of which are so dimensioned so that the greater portion of the mineral matter contained in said asphalt can pass through the meshes, said mastic comprising mineral matter and a bitumen mixture composed of straight-run bitumen and blown bitumen; b. unwinding said unilaterally reinforced asphalt mastic strip from said reel onto said surface to be impermeabilized in such a way that the reinforced side of the mastic strip faces said surface, the mastic strip being unwound with the unwinding part sagging freely.
Claim 3
Dependent Claim
27 words
A method as claimed in claim 1, characterized in that the bitumen component consists of equal quantities by weight of straight-run 80/100 bitumen and blown 85/40 bitumen.
Claim 4
Dependent Claim
22 words
A method as claimed in claim 1, characterized in that the bitumen content of the asphaltic mastic is 10-20 percent by weight.
Claim 5
Dependent Claim
77 words
A method as claimed in claim 3, characterized in that the asphaltic mastic used consists of 30-40 percent by weight of broken sand with a particle size of up to 3 mm, 15-30 percent by weight of fine sand having a particle size of up to 2 mm, 18-32 percent by weight of limestone filler and 12-16 percent by weight of bitumen mixture consisting of equal quantities by weight of straight-run 80/100 bitumen and blown 85/40 bitumen.
Claim 6
Dependent Claim
40 words
A method as claimed in claim 1, characterized in that the mesh size of the gauze is equal to 15 times the D 85 of the mineral aggregate of the asphaltic mastic, the D 85 being up to 4 mm.
Claim 7
Dependent Claim
22 words
A method as in claim 1, characterized in that the reel is attached to a vehicle which is moved over said surface.
Claim 8
Dependent Claim
30 words
A method as in claim 6 in said surface, characterized in that during unwinding of the asphaltic mastic strip the unwound portion is heated before being laid on said surface.
Claim 9
Dependent Claim
24 words
A method as claimed in claim 7, characterized in that the unwound strip is pressed onto the surface by means of a rolling device
Claim 10
Dependent Claim
18 words
A method as claimed in claim 8, characterized in that the rolling device is connected to the vehicle.
Claim 11
Dependent Claim
52 words
A method as in claim 6, characterized in that in order to prepare the laying of a wide asphaltic mastic strip, the water-retaining surface is levelled by lining it with asphalt having a volume of voids of at most 25 percent and a bitumen content of at most 6 percent by weight.
Claim 12
Dependent Claim
19 words
A method as in claim 6, characterized in that the wide strips are laid on a heated lower surface.
Claim 13
Dependent Claim
24 words
A method as in claim 1, characterized in that the surface is impermeabilized with two layers of unilaterally externally reinforced wide asphaltic mastic strips.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |