Patent US3995079A successfully refreshed from Google Patents.
US3995079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial turf-like product
Assignee: Individual
•
Filing: 1973-12-26
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Granted: 1976-11-30
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Expires: 1993-12-26
Abstract
Abstract An artificial turf-like product having a surface which exhibits game playing characteristics approaching those of natural turf is provided by interspersing a layer of non-compacting granular material comprising irregular angular particles having a size in the range from 6 to 100 U.S. screen mesh size, preferably from 12 to 50 among the upstanding pile elements of a synthetic pile fabric.
Inventors
- 👤 Frederick T. Haas, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:34
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23921
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A synthetic turf-like product providing a game playing surface having characteristics approaching those of natural turf comprising: a pile fabric including a relatively flexible backing and normally generally upstanding pile elements resembling grass; and a quantity of non-compacting granular material comprising irregular, angular particles having a size between 6 and 100 U.S. screen mesh size selected from the class consisting of granulated coal slag, crushed flint and crushed granite; said granular material being interspersed on the backing among the pile elements of said pile fabric to a depth sufficient to substantially absorb the shock of objects impacting thereon.
Claim 2
Dependent Claim
98 words
A synthetic turf-like product providing a game playing surface having characteristics approaching those of natural turf comprising: a pile fabric including a relatively flexible backing and normally generally upstanding pile elements resembling grass; and a quantity of non-compacting granular material comprising irregular, angular particles having a size between 6 and 100 U.S. screen mesh size selected from the class consisting of granulated coal slag, crushed flint and crushed granite; said granular material being interspersed on the backing among the pile elements of said pile fabric to a depth sufficient to substantially absorb the shock of objects impacting thereon.
Claim 3
Dependent Claim
53 words
A synthetic golf green as recited in claim 1 wherein the length of said pile elements is in the range of from about 1/2 inch to about 11/2 inches and the depth of said granular material is in the range of from about 50% to essentially equal the length of the pile elements.
Claim 4
Dependent Claim
54 words
A synthetic golf green as recited in claim 2 wherein the length of said pile elements is in the range of from about 3/4 inch to about 1 inch and the depth of said granular material is in the range of from about 75% to about 99% of the length of the pile elements.
Claim 5
Dependent Claim
34 words
A synthetic golf green as recited in claim 3 wherein the depth of said granular material is in the range of from about 90% to about 99% of the length of the pile elements.
Claim 6
Dependent Claim
26 words
A golf green as recited in claim 1 wherein said granular material comprises irregular, angular particles having a U.S. screen mesh size between 12 and 50.
Claim 7
Dependent Claim
26 words
A golf green as recited in claim 1 wherein said granular material comprises irregular, angular particles having a U.S. screen mesh size between 12 and 50.
Claim 8
Dependent Claim
16 words
A golf green as recited in claim 1 wherein said granular material comprises granulated coal slag.
Claim 9
Dependent Claim
27 words
A golf green as recited in claim 1 wherein said granular material comprises irregular, angular particles having a size between 12 and 50 U.S. screen mesh size.
Claim 10
Dependent Claim
15 words
A golf green as recited in claim 1 wherein said granular material comprises crushed granite.
Claim 11
Dependent Claim
15 words
A golf green as recited in claim 1 wherein said granular material comprises crushed flint.
References Cited (Backward Citations)
US3332828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |