Patent US4313775A successfully refreshed from Google Patents.
US4417828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erosion protection mat
Assignee: Nicolon BV
•
Filing: 1981-09-09
•
Granted: 1983-11-29
•
Expires: 2001-09-09
Abstract
Abstract A tissue mat protecting against erosion comprising a water-pervious tissue layer provided with anchoring loops. The anchoring loops have the form of a yarn woven across the tissue and protruding from the surface of the tissue. It is possible to use a rugged yarn guaranteeing a satisfactory anchorage to this end. The anchoring loops of the tissue ensure that the mat penetrates into the ground and is thus anchored. It is also possible to anchor concrete blocks of means of the anchoring loops by pouring the concrete on the mat or by pressing it thereon.
Inventors
- 👤 Jan G. de Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:32
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
An erosion-protecting mat comprising a water-pervious tissue layer having anchoring loops projecting outwardly from at least one surface of the tissue, the anchoring loops being integral portions of a yarn woven across the tissue and periodically protruding from said surface of the tissue.
Claim 2
Dependent Claim
43 words
An erosion-protecting mat comprising a water-pervious tissue layer having anchoring loops projecting outwardly from at least one surface of the tissue, the anchoring loops being integral portions of a yarn woven across the tissue and periodically protruding from said surface of the tissue.
Claim 3
Dependent Claim
16 words
A mat as claimed in claim 1 wherein the anchoring loops are anchored in concrete blocks.
Claim 4
Dependent Claim
16 words
A mat as claimed in claim 1 or 2 wherein the yarn is a mono-thread yarn.
Claim 5
Dependent Claim
18 words
A mat as claimed in anyone of claims 1 or 2 wherein the yarn is made from polypropene.
Claim 6
Dependent Claim
29 words
A mat as claimed in anyone of claims 1 or 2 wherein the loops have a height of 5 mms and the yarn has a diameter of 0.25 mm.
Claim 7
Dependent Claim
30 words
A mat as claimed in anyone of claims 1 or 2 wherein the loops are triangular and the basis of the triangle is located in the plane of the tissue.
Claim 8
Dependent Claim
22 words
A mat as claimed in anyone of claims 1 or 2 wherein the anchoring loops protrude on both sides of the tissue.
References Cited (Backward Citations)
US450286A
Cited
US1187503A
Cited
US1358042A
Cited
US1613063A
Cited
US1549802A
Cited
US2151505A
Cited
US2229742A
Cited
US3148482A
Cited
US3344608A
Cited
US3386252A
Cited
DE1813450C
Cited
NL7008831A
Cited
NL7213540A
Cited
US4227829A
Cited
NL7904906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |