US4529622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for constructing all-weather surface
Assignee: SEAL-FLEX Inc A MN CORP
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Filing: 1984-09-04
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Granted: 1985-07-16
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Expires: 2004-09-04
Abstract
Abstract A method for constructing an activity surface comprising a plurality of binder coatings interspersed with layers of particulate rubber. A tack coating preferably of asphaltic material, is applied to establish a good bond to the underlying foundation material. Subsequent binder coatings are of a latex liquid with a small quantity of surfactant added to enhance the penetration of the coating. A sealing coat is applied to seal the upper surface and to mechanically screen the harmful effects of sunlight. Each coating of latex is permitted to dry before applying a subsequent layer of rubber particles.
Inventors
- 👤 Marvin L. Maxfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:57
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06; E01C13/065; B; B05; B05D; B05D5/00; B05D5/02; B05D7/00; B05D7/50; B05D7/56; B05D7/58
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A method for constructing an activity mat over a foundation comprising the steps of: spreading an adhesive tack coating for adhering the mat to the foundation over the foundation surface; spreading a first uniform layer of particulate rubber over the tack coating; then, in sequence, first applying a liquid latex binder to the previously spread rubber layer in sufficient quantity to coat substantially all rubber particles of said layer then air drying said applied mixture until substantially no liquid is visible, then spreading a succeeding uniform layer of particulate rubber uniformly over the preceding layers; and continuing the aforesaid sequential application of latex binder, air drying the binder followed by the spreading of a uniform layer of rubber over the preceding layers until the approximate desired thickness for the mat is achieved.
Claim 2
Independent Claim
132 words
A method for constructing an activity mat over a foundation comprising the steps of: spreading an adhesive tack coating for adhering the mat to the foundation over the foundation surface; spreading a first uniform layer of particulate rubber over the tack coating; then, in sequence, first applying a liquid latex binder to the previously spread rubber layer in sufficient quantity to coat substantially all rubber particles of said layer then air drying said applied mixture until substantially no liquid is visible, then spreading a succeeding uniform layer of particulate rubber uniformly over the preceding layers; and continuing the aforesaid sequential application of latex binder, air drying the binder followed by the spreading of a uniform layer of rubber over the preceding layers until the approximate desired thickness for the mat is achieved.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein said tack coating is hot applied asphalt.
Claim 4
Dependent Claim
24 words
The method of claim 2, wherein the maximum particle size of the particulate rubber of said first layer is approximately 3/8 inches in diameter.
Claim 5
Dependent Claim
11 words
The method of claim 1, wherein said binder is acrylic latex.
Claim 6
Dependent Claim
13 words
The method of claim 4, wherein said acrylic latex is diluted with water.
Claim 7
Dependent Claim
30 words
The method of claim 5, wherein a color pigment is added to the binder liquid prior to the application of such liquid to at least one layer of rubber particles.
Claim 8
Dependent Claim
15 words
The method of claim 1, wherein the rubber particles are ground from vulcanized tire carcasses.
Claim 9
Dependent Claim
22 words
The method of claim 1, wherein the rubber particles are strands of rubber removed from vulcanized tire carcasses by a stripping process.
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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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |