Patent US5976645A successfully refreshed from Google Patents.
US5976645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically draining, rubber-filled synthetic turf and method of manufacture
Assignee: SPECIALTY SURFACES INTERNATIONAL Inc
•
Filing: 1998-06-01
•
Granted: 1999-11-02
•
Expires: 2018-06-01
Abstract
Abstract Vertically draining synthetic turf having reduced abrasiveness and increased resilience compared to conventional synthetic turfs. The vertical draining system of the present invention prevents water from accumulating on the turf surface, which could cause the top-dressing layer to "float" and be moved by inundation. The draining system of the present invention incorporates a porous geotextile membrane between an open graded aggregate layer and a sand layer above the aggregate layer to prevent the movement of one aggregate layer into the other. The top-dressing layer consists of resilient particles, preferably a mixture of high and low density rubber. The pile fabric preferably includes an isotropic non-woven backing to add dimensional stability.
Inventors
- 👤 Daniel A. Daluise
- 👤 Paul R. Lioi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:56
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/08; E01C13/02; Y; Y10; Y10S; Y10S273/00; Y10S273/13
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
62 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a pile fabric over said porous aggregate layer, said pile fabric comprising a plurality of pile elements tufted to a backing, said backing comprising a woven layer and a non-woven layer bound together; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
Claim 2
Dependent Claim
62 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a pile fabric over said porous aggregate layer, said pile fabric comprising a plurality of pile elements tufted to a backing, said backing comprising a woven layer and a non-woven layer bound together; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
Claim 3
Dependent Claim
12 words
The synthetic turf of claim 1, wherein said resilient particles comprise styrene-butadiene.
Claim 4
Dependent Claim
15 words
The synthetic turf of claim 2, wherein said resilient particles further comprise high density rubber.
Claim 5
Dependent Claim
12 words
The synthetic turf of claim 1, wherein said pile elements comprise polyethylene.
Claim 6
Dependent Claim
14 words
The synthetic turf of claim 1, wherein said backing further comprises a polymeric coating.
Claim 7
Dependent Claim
26 words
The synthetic turf of claim 1, wherein said non-woven layer is secured to said woven layer having a layer of felt thereon facing said non-woven layer.
Claim 8
Dependent Claim
21 words
The synthetic turf of claim 1, further comprising drainage means below said pile fabric for directing water away from said turf.
Claim 9
Dependent Claim
17 words
The synthetic turf of claim 7, wherein said drainage means comprises a plurality of perforated interconnected pipes.
Claim 10
Dependent Claim
19 words
The synthetic turf of claim 8, wherein said drainage means further comprises a plurality of holes in said backing.
Claim 11
Dependent Claim
16 words
The synthetic turf of claim 1, further comprising a geotextile membrane over said porous aggregate layer.
Claim 12
Dependent Claim
25 words
The synthetic turf of claim 10, further comprising a substantially non-compactable layer comprising sand and resilient material between said geotextile membrane and said pile fabric.
Claim 13
Dependent Claim
21 words
The synthetic turf of claim 11, wherein said resilient material in said substantially non-compactable layer is rubber embedded in said sand.
Claim 14
Dependent Claim
26 words
The synthetic turf of claim 1, further comprising a substantially non-compactable layer comprising sand and resilient material between said porous aggregate layer and said pile fabric.
Claim 15
Dependent Claim
21 words
The synthetic turf of claim 13, wherein said resilient material in said substantially non-compactable layer is rubber embedded in said sand.
Claim 16
Independent Claim
63 words
A method of forming a synthetic turf on a sub-surface base, comprising: forming a porous aggregate layer on said sub-surface base; providing a pile fabric over said porous aggregate layer, said pile fabric comprising a plurality of pile elements tufted to a backing and an infill consisting essentially of resilient particles, said backing comprising a woven layer and a non-woven layer bound together.
Claim 17
Independent Claim
63 words
A method of forming a synthetic turf on a sub-surface base, comprising: forming a porous aggregate layer on said sub-surface base; providing a pile fabric over said porous aggregate layer, said pile fabric comprising a plurality of pile elements tufted to a backing and an infill consisting essentially of resilient particles, said backing comprising a woven layer and a non-woven layer bound together.
Claim 18
Dependent Claim
22 words
The method of claim 15, further comprising providing water drainage by burying a plurality of perforated interconnected pipes below said pile fabric.
Claim 19
Dependent Claim
16 words
The method of claim 15, further comprising providing a geotextile membrane over said porous aggregate layer.
Claim 20
Dependent Claim
21 words
The method of claim 17, further comprising forming a substantially non-compactable layer comprising sand and resilient material over said geotextile membrane.
Claim 21
Dependent Claim
22 words
The method of claim 18, further comprising providing water drainage by burying a plurality of perforated interconnected pipes below said pile fabric.
Claim 22
Dependent Claim
26 words
The method of claim 15, further comprising forming a substantially non-compactable layer comprising sand and resilient material between said porous aggregate layer and said pile fabric.
Claim 23
Dependent Claim
64 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a substantially non-compactable layer comprising sand and resilient material over said porous aggregate layer; a pile fabric over said substantially non-compactable layer, said pile fabric comprising a plurality of pile elements secured to a backing; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
Claim 24
Dependent Claim
64 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a substantially non-compactable layer comprising sand and resilient material over said porous aggregate layer; a pile fabric over said substantially non-compactable layer, said pile fabric comprising a plurality of pile elements secured to a backing; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
Claim 25
Dependent Claim
17 words
The synthetic turf of claim 21, wherein said backing comprises a woven layer and a non-woven layer.
Claim 26
Dependent Claim
71 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a geotextile membrane over said porous aggregate layer; a substantially non-compactable layer comprising sand and resilient material over said geotextile membrane; a pile fabric over said substantially non-compactable layer, said pile fabric comprising a plurality of pile elements secured to a backing; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
Claim 27
Dependent Claim
71 words
A synthetic turf comprising: a sub-surface layer; a porous aggregate layer over said sub-surface layer; a geotextile membrane over said porous aggregate layer; a substantially non-compactable layer comprising sand and resilient material over said geotextile membrane; a pile fabric over said substantially non-compactable layer, said pile fabric comprising a plurality of pile elements secured to a backing; and an infill for said pile fabric, said infill consisting essentially of resilient particles.
References Cited (Backward Citations)
FR560067A
Cited
GB401304A
Cited
US3157557A
Cited
US3332828A
Cited
US3570846A
Cited
US3995079A
Cited
US3661687A
Cited
US4044174A
Cited
US3801421A
Cited
US3740303A
Cited
US3731923A
Cited
GB1411623A
Cited
US3900656A
Cited
FR2238805A1
Cited
US4044179A
Cited
US4337283A
Cited
US4497853A
Cited
US5601886A
Cited
US5605721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |