Patent US5053264A successfully refreshed from Google Patents.
US5053264A
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Plastic material net structure
Assignee: RDB Plastotecnica SpA
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Filing: 1989-12-14
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Granted: 1991-10-01
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Expires: 2009-12-14
Abstract
Abstract The plastic material net structure, particularly useful for geotechnical applications, has a plurality of holes uniformly arranged in rows and columns. The sheet further comprises portions which are elongated in the stretch direction, are mutually separated by the holes and have a predominance of molecules orientated in the stretch direction. The elongated portions extend from node elements which have a plurality of non-orientated molecules. The node elements are mutually joined by non-oriented transverse portions which extend between said holes in a direction which is substantially perpendicular to the elongated portions. The node elements have a thickness which is greater than the thickness of the transverse portions and of the elongated portions.
Inventors
- 👤 Mario Beretta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:02
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29D; B29D28/00; B29L; B29L2028/00; Y; Y10; Y10S; Y10S264/00; Y10S264/81; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24306; Y10T428/24314; Y10T428/24479; Y10T428/2457; Y10T428/31504; Y10T428/31855; Y10T442/00; Y10T442/10; Y10T442/184
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness.
Claim 2
Dependent Claim
106 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness.
Claim 3
Dependent Claim
122 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness, said transverse portions being pre-stretched transverse portions with a pre-stretch ratio comprised between 1:1 and 2.5:1.
Claim 4
Dependent Claim
122 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness, said transverse portions being pre-stretched transverse portions with a pre-stretch ratio comprised between 1:1 and 2.5:1.
Claim 5
Dependent Claim
112 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness, said node elements being substantially non-orientated.
Claim 6
Dependent Claim
112 words
Plastic material net structure, comprising a sheet made of plastic material having a plurality of holes defined by a generally rectangular grid pattern of elongated portions and transverse portions interconnected by node elements, said sheet defining a plane of lay, said elongated portions extending in a stretch direction and being substantially orientated, said transverse portions extending substantially perpendicular to the stretch direction and being substantially non-orientated, said transverse portions defining a transverse portion thickness perpendicular to said plane of lay and said node elements defining a node element thickness perpendicular to said plane of lay, said transverse portion thickness being less than said node element thickness, said node elements being substantially non-orientated.
Claim 7
Dependent Claim
21 words
Net structure according to claim 3, wherein said node elements have protrusions which protrude from a single face of said sheet.
Claim 8
Dependent Claim
20 words
Net structure according to claim 3, wherein said node elements have protrusions which protrude from both faces of said sheet.
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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) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |