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Patent US5728424A successfully refreshed from Google Patents.
US5728424A
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US
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Method for forming a textured surface on a geomembrane
Assignee: GSE Environmental LLC
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Filing: 1996-04-10
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Granted: 1998-03-17
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Expires: 2016-04-10
Abstract
Abstract A system for forming a textured surface on a geomembrane including a support surface, a first set of rollers for passing the geomembrane onto the support surface such that a surface of the geomembrane faces upwardly, a heater positioned in proximity to the surface of the geomembrane so as to heat the geomembrane to a desired elevated temperature, a particle distributer positioned above the geomembrane so as to pass solid particles onto the surface of the geomembrane in a desired particle distribution. The particles can have a desired size and geometry as they are passed onto the surface of the geomembrane. A second set of rollers is positioned adjacent to the port surface so as to receive the geomembrane after the particles have been distributed thereon. The heater includes a preheater positioned on one side of the particle distributor and a postheater positioned on an opposite side of the particle distributor. The preheater serves to elevate a temperature of the surface of the geomembrane prior to receiving particles thereon. The postheater serves to bond the distributed particles onto the surface of the geomembrane.
Inventors
- 👤 Walter W. Walling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:01
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C59/04; B29C70/00; B29C70/58; B29C70/64
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A method of forming a textured surface on a geomembrane comprising the steps of: passing the geomembrane over a first support surface; heating a surface of the geomembrane; distributing granules onto the heated surface of the geomembrane as the geomembrane passes over said first support surface; bonding said granules onto the heated surface of the geomembrane, said step of bonding comprising the steps of: heating the surface of the geomembrane and said granules after said granules are distributed; and passing the heated surface and granules between rollers, said rollers exerting a compressive force onto the surface of the geomembrane such that said granules adhere onto said surface of the geomembrane with a weld factor of less than one; and passing the geomembrane from the first support surface.
Claim 2
Independent Claim
127 words
A method of forming a textured surface on a geomembrane comprising the steps of: passing the geomembrane over a first support surface; heating a surface of the geomembrane; distributing granules onto the heated surface of the geomembrane as the geomembrane passes over said first support surface; bonding said granules onto the heated surface of the geomembrane, said step of bonding comprising the steps of: heating the surface of the geomembrane and said granules after said granules are distributed; and passing the heated surface and granules between rollers, said rollers exerting a compressive force onto the surface of the geomembrane such that said granules adhere onto said surface of the geomembrane with a weld factor of less than one; and passing the geomembrane from the first support surface.
Claim 3
Dependent Claim
63 words
The method of claim 1, said step of passing the geomembrane from the support surface comprising the steps of: passing the geomembrane over a second support surface; heating another surface of the geomembrane; distributing granules onto the heated another surface of the geomembrane; bonding said granules onto the heated another surface of the geomembrane; and passing the geomembrane from said second support surface.
Claim 4
Dependent Claim
25 words
The method of claim 2, said step of bonding comprising the step of: heating said another surface of the geomembrane after the granules are distributed.
Claim 5
Dependent Claim
37 words
The method of claim 3, said step of bonding further comprising the step of: passing the heated another surface and granules between rollers, said rollers exerting a compressive force onto the heated another surface of the geomembrane.
Claim 6
Dependent Claim
35 words
The method of claim 2, said step of bonding comprising the step of: passing the heated another surface and granules between rollers, said rollers exerting a compressive force onto said another surface of the geomembrane.
Claim 7
Dependent Claim
15 words
The method of claim 1, said granules being solid particles during said step of distributing.
Claim 8
Independent Claim
82 words
A method of forming a textured surface on a geomembrane comprising the steps of: passing the geomembrane over a flat support surface; heating a surface of the geomembrane; distributing granules over the heated surface of the geomembrane as the geomembrane passes over said support surface; bonding said granules onto the heated surface of the geomembrane, said step of heating and said step of bonding occurring as the geomembrane passes over said flat support surface; and passing the geomembrane from the support surface.
Claim 9
Independent Claim
82 words
A method of forming a textured surface on a geomembrane comprising the steps of: passing the geomembrane over a flat support surface; heating a surface of the geomembrane; distributing granules over the heated surface of the geomembrane as the geomembrane passes over said support surface; bonding said granules onto the heated surface of the geomembrane, said step of heating and said step of bonding occurring as the geomembrane passes over said flat support surface; and passing the geomembrane from the support surface.
References Cited (Backward Citations)
US2936814A
Cited
US3622422A
Cited
US4885201A
Cited
US5075135A
Cited
GB2255292A
Cited
US5612081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-16 | 2001-09-15 | 2002-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-16 | 2005-09-15 | 2006-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-16 | 2009-09-15 | 2010-03-17 | $7700.00 | Window Closed / Lapsed |