Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Irrigation system










Image Number 2 for United States Patent #4928427.

A hollow, cellulose acetate fiber having a wall permeable to water is formed into a coil of constant dimensions. The coil is placed at the root level of the plants to be irrigated. Where the plants are spaced at intervals (as opposed to being immediately adjacent) a number of coil turns are positioned at the plant location and the coil stretched out between plant locations. In this manner, irrigation is concentrated at the plant and minimized in the intervening distance. Consequently, even though the coil is of constant dimensions and porosity, the quantity of water dispensed can be varied as desired. Similarly the spacing between parallel coils can be varied. This spacing variation is desirable where the pressure of the water varies because of height changes, on a slope for example. The subterraneon watering by coil has an additional beneficial effect because the roots of the plants tend to concentrate within the turns of the coil so as to become anchored thereto. This minimizes errosion of the soil around the plants whether caused by water or wind.








 
 
  Recently Added Patents
Electronic device and recording medium
System and method for interactive image-based modeling of curved surfaces using single-view and multi-view feature curves
Methods circuits apparatuses and systems for facilitating access to online content
Fluid handling structure, a lithographic apparatus and a device manufacturing method
Powerline communication device with load characterization functionality
Promoting content
Optical modulator module
  Randomly Featured Patents
Transmit power adaptation for wireless communication systems
Apparatus and method for analyzing bacteria
Stent graft with valve arrangement
Modular console enclosure with writing surface
Display device and optical film
Coating composition and low dielectric siliceous material produced by using same
Fishing line release device
Electronic device including tetrahedral antenna and associated methods
Shim for motor or the like
Nectarine tree named `Sugarred II`