Plant husbandry – Receptacle for growing medium – Irrigator
Patent
1987-11-16
1991-04-23
Hafer, Robert A.
Plant husbandry
Receptacle for growing medium
Irrigator
428138, A01G 902, B32B 310
Patent
active
050090330
ABSTRACT:
A ground cover sheet for retaining bark dust and bark chips in place in a landscaping arrangement includes a base sheet and a cover sheet. A plurality of rows of short slits are spaced along the length of the cover sheet. The cover sheet is heat welded to the base sheet in a manner to cause bows formed by the spaced slits to extend convexly upwardly. These upwardly extending bows serve to retain bark dust and bark chips in place on the ground cover sheet. The base and cover sheets are preferably formed from a flexible plastic material of a brown color to match the bark dust. The base sheet is formed from a four mils thick material and the cover sheet is formed from a six mils thick material. The upwardly extending bows on the cover sheet may be reinforced with a nylon filament material.
REFERENCES:
patent: 2323746 (1943-07-01), Woolf et al.
patent: 3315408 (1967-04-01), Fisher
patent: 3619944 (1971-11-01), Matvey
patent: 3704544 (1972-12-01), Spanel et al.
patent: 4090325 (1978-05-01), Mushin et al.
patent: 4272919 (1981-06-01), Schmidt
Hafer Robert A.
Kearns Jerry T.
Muir David N.
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