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US5397620A Expired / Lapsed US ⏱️ 0.0 years remaining

System and method for forming activity surface

Assignee: HORD R ANDERSON III
•
Filing: 1993-04-05
•
Granted: 1995-03-14
•
Expires: 2013-04-05
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Abstract

Abstract A structure and related method for forming a surface on which sports activities occur. The disclosed structure uses three basic layers to form the surface on top of a prepared substrate. The first layer is comprised of a plurality of sublayers bound together by adhesive coatings, the first of which requires deposition of resilient particles in the 3 to 6 millimeter size range. Several subsequent sublayers include smaller-sized particles which, after deposition and spreading, result in a relatively smooth and resilient latex-bound base mat. The second layer provides a cushion coating, while a slightly textured decorative finish coating results from application of the third and final top layer. A method for forming these three layers is also disclosed which method specifies both the sizes of particles and the spread rate for particles and adhesive material for each of the sublayers in the first layer. The disclosed surface is particularly durable and provides a playing area for sports activities that is more impact-absorbing than other similar artificial sports surfaces.

Inventors

  • 👤 R. Anderson Hord, III

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 22:24
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/06; E01C13/065; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24405; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31826; Y10T428/3183

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 132 words
A multi-layered surface on which the sports of tennis and volleyball are performed for installation on top of a prepared substrate, comprised of: a first latex-bound base mat layer formed of a plurality of successively applied sublayers of rubber particles; each sublayer is covered by a carboxylated-styrene-butadiene adhesive coating before the next sublayer is applied, wherein sublayers of rubber particles applied after the first sublayer of rubber particles are comprised of rubber particles smaller in size than that used in a preceding sublayer and are applied at a decreasing spread rate, and wherein the first sublayer is comprised of rubber particles of between three millimeters and six millimeters in size; a second cushion-coat layer; and a third finishing top layer further comprised of at least two coatings of a color finishing material.
Claim 2
Dependent Claim 132 words
A multi-layered surface on which the sports of tennis and volleyball are performed for installation on top of a prepared substrate, comprised of: a first latex-bound base mat layer formed of a plurality of successively applied sublayers of rubber particles; each sublayer is covered by a carboxylated-styrene-butadiene adhesive coating before the next sublayer is applied, wherein sublayers of rubber particles applied after the first sublayer of rubber particles are comprised of rubber particles smaller in size than that used in a preceding sublayer and are applied at a decreasing spread rate, and wherein the first sublayer is comprised of rubber particles of between three millimeters and six millimeters in size; a second cushion-coat layer; and a third finishing top layer further comprised of at least two coatings of a color finishing material.
Claim 3
Dependent Claim 14 words
The surface of claim 1, wherein said mat layer is comprised of five sublayers.
Claim 4
Dependent Claim 23 words
The surface of claim 2, wherein the second sublayer is comprised of rubber particles of between one millimeters and three millimeters in size.
Claim 5
Dependent Claim 25 words
The surface of claim 3, wherein the third sublayer is comprised of rubber particles of between one-half millimeter and one and one-half millimeters in size.
Claim 6
Dependent Claim 25 words
The surface of claim 4, wherein the fourth sublayer is comprised of rubber particles of between one-half millimeter and one and one-half millimeters in size.
Claim 7
Dependent Claim 25 words
The surface of claim 5, wherein the fifth sublayer is comprised of rubber particles of between one-half millimeter and one and one-half millimeters in size.
Claim 8
Dependent Claim 21 words
The surface of claim 1, wherein said cushion-coat layer is comprised of at least one coating of a cushion-coat emulsion product.
Claim 9
Dependent Claim 19 words
The surface of claim 1, wherein the color finishing material used for the finishing top layer is an acrylic.
Claim 10
Dependent Claim 19 words
The surface of claim 1, wherein the color finishing material used for the finishing top layer is a vinyl-acrylic.

References Cited (Backward Citations)

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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) 1998-03-13 1998-09-12 1999-03-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-03-13 2002-09-12 2003-03-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-03-13 2006-09-12 2007-03-14 $7700.00 Window Closed / Lapsed

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