Title:
GROUND SURFACE COVERS
Document Type and Number:
WIPO Patent Application WO/2003/013223
Kind Code:
A1
Abstract:
A multi-layer, biodegradable, ground surface sheet (1) of paper or cardboard incorporates linseed oil, etc as preservative. It has a corrugated lower layer (3) providing airflow channels (6) across upper surface (10) of soil, mulch, etc, (11) over subsoil (12). Upper layer (2) of sheet (1) may be flat (as shown) or have a further layer of upward-facing corrugations. Air pockets between layers (2, 3, etc) provide insulation. Sheet (1) is urolled from a vehicle, passed through a bath so that additives such as fertiliser, fongicide, pesticide, etc, are absorbed, and then fixed to the ground using biodegradable, swellable pegs or by clipping to wires running along sides of sheet (1).
Inventors:
RIX-TROTT KEVIN HENRY (NZ)
Application Number:
PCT/NZ2002/000153
Publication Date:
February 20, 2003
Filing Date:
August 09, 2002
Export Citation:
Assignee:
RIX-TROTT KEVIN HENRY (NZ)
International Classes:
A01G13/02; C09K17/52; (IPC1-7): A01G13/02
Foreign References:
| FR2657364A1 | 1991-07-26 | |||
| CA2312299A1 | 2001-09-10 | |||
| US5855090A | 1999-01-05 | |||
| US6233867B1 | 2001-05-22 | |||
| US3020859A | 1962-02-13 | |||
| US4285161A | 1981-08-25 | |||
| US5226376A | 1993-07-13 |
Other References:
DATABASE WPI Derwent World Patents Index; Class P13, AN 1997-396874/37
PATENT ABSTRACTS OF JAPAN
PATENT ABSTRACTS OF JAPAN
Attorney, Agent or Firm:
Adams, Matthew D. (6th Floor Huddart Parker Building Post Office Squar, PO Box 949 6015 Wellington, NZ)
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