The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 1992
Filed:
Jul. 19, 1990
Christiaan Blok, Roermond, NL;
Rockwool/Grodan B.V., Melick-Herhenbosch, NL;
Abstract
The invention relates to a system, in which water, optionally mixed with nutrients, is supplied to a substrate used for horticulture. Commonly an excess of water is supplied, so that it is necessary to drain the excess. Usually this is achieved by providing drainage hoses, in which an underpressure is maintained. To avoid that the roots of the plants grown in the substrate grow into the hoses and block these, the invention provides coupling members for coupling mineral wood to a drainage hose, when said coupling member is formed by a porous body arranged at least partly in said mineral wool and provided with a cavity connected to said drainage hose. According to a preferred embodiment the porous body of said coupling member is formed by mineral wool compressed such, that the density thereof is greater than the density of the non-compressed mineral wool.