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Patent US4606963A successfully refreshed from Google Patents.
US4606963A
Expired / Lapsed
US
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Synthetic clay tennis court and method of making the same
Assignee: Individual
•
Filing: 1985-02-27
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Granted: 1986-08-19
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Expires: 2005-02-27
Abstract
Abstract A synthetic clay court composition is provided having a first aggregate-containing elastomeric lamina applied to a substrate. Prior to the elastomer curing aggregate is broadcast over the elastomer in an amount sufficient to form a second free-flowing lamina.
Inventors
- 👤 Dominic L. Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:37
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06; E01C13/065; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/2443; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
A tennis court surface laminae which consists essentially of: (a) a first lamina having an upper surface and a lower surface, the lower surface adhesively engaging a sub-surface, the lamina comprising: a film forming vehicle selected from the group consisting of elastomers and bituminous materials and adapted for ambient temperature curing: aggregate disposed in the vehicle, at least a portion of the aggregate extending beyond the upper surface to provide a roughened non-uniform gravel-like texture between 30 to 70% of the upper surface of the composition comprising coated aggregate extending beyond the upper level of the vehicle; (b) a second lamina of free-flowing particles of aggregate having an upper and a lower surface the second lamina having a thickness of one to three times the thickness of the first lamina, the lower surface contacting the upper surface of the first lamina and the aggregate extending from the upper surface of the first lamina in sliding frictional engagement and the particle size of the aggregate used in both the first and second laminae being between 4 Tyler and to 35 Tyler mesh.
Claim 2
Dependent Claim
181 words
A tennis court surface laminae which consists essentially of: (a) a first lamina having an upper surface and a lower surface, the lower surface adhesively engaging a sub-surface, the lamina comprising: a film forming vehicle selected from the group consisting of elastomers and bituminous materials and adapted for ambient temperature curing: aggregate disposed in the vehicle, at least a portion of the aggregate extending beyond the upper surface to provide a roughened non-uniform gravel-like texture between 30 to 70% of the upper surface of the composition comprising coated aggregate extending beyond the upper level of the vehicle; (b) a second lamina of free-flowing particles of aggregate having an upper and a lower surface the second lamina having a thickness of one to three times the thickness of the first lamina, the lower surface contacting the upper surface of the first lamina and the aggregate extending from the upper surface of the first lamina in sliding frictional engagement and the particle size of the aggregate used in both the first and second laminae being between 4 Tyler and to 35 Tyler mesh.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the film-forming vehicle is a bituminous material and has an application temperature of between 50°-200° F.
Claim 4
Dependent Claim
27 words
The composition of claim 2 wherein the film-forming vehicle is an elastomer selected from the group consisting of urethanes, polyamides, polyesters, acrylics, acrylates, methacrylates and combinations thereof.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the film-forming vehicle is an aqueous acrylic resin emulsion.
Claim 6
Dependent Claim
33 words
The composition of claim 1 wherein the thickness of the first lamina is from 1/8 to 5/8 inches thick and the second lamina is at least equal in thickness to the first lamina.
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein the aggregate is a mineral aggregate.
Claim 8
Dependent Claim
32 words
The composition of claims 4, 5 or 6 wherein the aggregate is selected from the group consisting of stone, slag, gravel, sand, volcanic rock, cracked shells, quartz or finely divided aluminum oxide.
Claim 9
Dependent Claim
23 words
The composition of claim 7 wherein the aggregate is the first lamina comprising between 25-75% of the total volume of the first lamina.
References Cited (Backward Citations)
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Cited
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |