Patent US4830532A successfully refreshed from Google Patents.
US4830532A
Expired / Lapsed
US
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Tracks for sporting events
Assignee: Individual
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Filing: 1987-02-25
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Granted: 1989-05-16
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Expires: 2007-02-25
Abstract
Abstract A cushioned track surface for sporting events comprises superposed courses of materials. The track surface comprises courses of: (a) an underlying course of particulate material, (b) an intermediate course of fibrous material, (c) a binding course of shredded paper and (d) a wear surface course of additional fibrous material. The binding course serves a function of holding together the intermediate and wear surface course of fibrous material so as to prolong the durability of the track surface while at the same time providing good drainage and good footing.
Inventors
- 👤 Anthony V. Macke
- 👤 Philip E. Shrimpton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:07
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/02; E01C13/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
140 words
A track for sporting events characterized in having desired force cushioning characteristics with good drainage, footing and durability under varying weather conditions, said track comprised of superposed courses of (a) an underlying course of particulate material, (b) an intermediate course of fibrous material, (c) a binding course of unvarnished shredded paper having a width of from about one-eighth inch to about one inch and a length of from about one inch to about five inches, and (d) a wear surface course of a second fibrous material having a density greater than that of the fibrous material of the intermediate course, wherein the binding course holds the intermediate and wear surface courses of fibrous materials together to provide durability and a cushioning effect as weight forces exerted on the surface course are caused to be distributed more evenly through the courses.
Claim 2
Dependent Claim
140 words
A track for sporting events characterized in having desired force cushioning characteristics with good drainage, footing and durability under varying weather conditions, said track comprised of superposed courses of (a) an underlying course of particulate material, (b) an intermediate course of fibrous material, (c) a binding course of unvarnished shredded paper having a width of from about one-eighth inch to about one inch and a length of from about one inch to about five inches, and (d) a wear surface course of a second fibrous material having a density greater than that of the fibrous material of the intermediate course, wherein the binding course holds the intermediate and wear surface courses of fibrous materials together to provide durability and a cushioning effect as weight forces exerted on the surface course are caused to be distributed more evenly through the courses.
Claim 3
Dependent Claim
23 words
The track of claim 1 wherein the underlying course of particulate material ranges in thickness from about two inches to about eight inches.
Claim 4
Dependent Claim
23 words
The track of claim 2 wherein the intermediate course of fibrous material ranges in thickness from about two inches to about eight inches.
Claim 5
Dependent Claim
24 words
The track of claim 3 wherein the wear surface course of fibrous material ranges in thickness from about two inches to about eight inches.
Claim 6
Dependent Claim
38 words
The track of claim 4 wherein the binding course of shredded paper ranges in thickness from about two inches to about eight inches when initially laid and from about one-half inch to about three inches during subsequent use.
Claim 7
Dependent Claim
22 words
The track of claim 5 wherein the underlying course of particulate material is sand, gravel, crushed rock, cinders or a mixture thereof.
Claim 8
Dependent Claim
31 words
The track of claim 6 wherein the fibrous material used in the intermediate and wear surface courses is wood chips, sawdust, wood shavings, ground bark, ground wood or a mixture thereof.
Claim 9
Dependent Claim
25 words
The track of claim 1 wherein the density of fibrous material used in the wear surface course is greater than about 0.85 gm per cc.
Claim 10
Dependent Claim
31 words
The track of claim 8 wherein the intermediate course is made of sawdust and the wear surface course is made of wood chips, ground bark, ground wood or a mixture thereof.
Claim 11
Dependent Claim
13 words
The track of claim 9 wherein the shredded paper is a sulfite paper.
Claim 12
Dependent Claim
36 words
The track of claim 10 wherein the underlying course of particulate material, intermediate course of fibrous material and wear surface course of fibrous material all range in thickness from about three inches to about six inches.
Claim 13
Independent Claim
142 words
A method of building a track for sporting events wherein said track has desired force cushioning characteristics with good drainage, footing and durability, comprising the steps of: (a) forming an underlying course of particulate material; (b) laying an intermediate course of fibrous material on said underlying course; (c) wetting the intermediate course; (d) laying a binding course of unvarnished shredded paper having a width of from about one-eight inch to about one inch and a length of from about one inch to about five inches onto said wetted intermediate course; and (e) laying a wear surface course of fibrous material having a density greater than that of the intermediate course fibrous material onto said binding course so as to form a superposed composite of courses wherein said intermediate and wear surface courses of fibrous material are held together by the binding course.
Claim 14
Independent Claim
142 words
A method of building a track for sporting events wherein said track has desired force cushioning characteristics with good drainage, footing and durability, comprising the steps of: (a) forming an underlying course of particulate material; (b) laying an intermediate course of fibrous material on said underlying course; (c) wetting the intermediate course; (d) laying a binding course of unvarnished shredded paper having a width of from about one-eight inch to about one inch and a length of from about one inch to about five inches onto said wetted intermediate course; and (e) laying a wear surface course of fibrous material having a density greater than that of the intermediate course fibrous material onto said binding course so as to form a superposed composite of courses wherein said intermediate and wear surface courses of fibrous material are held together by the binding course.
Claim 15
Dependent Claim
59 words
The method of claim 12 wherein the intermediate course of fibrous materials ranges in thickness from about two inches to about eight inches, the binding course of shredded paper ranges in thickness from about two inches to about eight inches when initially laid and the wear surface course ranges in thickness from about two inches to about eight inches.
Claim 16
Dependent Claim
36 words
The method of claim 13 wherein the underlying course of particulate material, intermediate course of fibrous material and wear surface course of fibrous material all range in thickness from about three inches to about six inches.
Claim 17
Dependent Claim
26 words
The method of claim 13 wherein the density of the fibrous material used in the wear surface course is greater than about 0.85 gm per cc.
Claim 18
Dependent Claim
37 words
The method of claim 15 wherein the fibrous material used in the intermediate course is sawdust and the fibrous material used in the wear surface course is wood chips, ground bark, ground wood or a mixture thereof.
Claim 19
Dependent Claim
13 words
The method of claim 16 wherein the shredded paper is a sulfite paper.
Claim 20
Dependent Claim
17 words
The method of claim 17 additionally comprising wetting the shredded paper binding course after it is laid.
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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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |