Irrigation hose having holes formed on external walls of all flo

Details Irrigation hose having holes formed on external walls of all flo Irrigation hose having holes formed on external walls of all flo

1997-07-17

1998-04-07

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Unitary plural outlet means

All in a single straight line

239567, 239450, 239547, B05B 1500

Patent

active

057354707

ABSTRACT:
An irrigation hose provides a long life expectancy. The irrigation hose is characterized in that a plurality of flow passages are defined by partitions dividing the inside of the hose which is made of thermoplastic resin; and that each flow passage is provided with irrigation holes formed in a member of the tube portion which is in contact with outside air, that is the outer wall thereof. The irrigation hose can provide different irrigation methods appropriate to the crops or growth stages with just one hose, without exchanging or laying multiple hoses with different irrigation methods. A film 16 is inserted between a film 12 which is made of long thermoplastic resin film with irrigation holes formed throughout at regular pitch and another film 12 which is also made of a long thermoplastic resin film with irrigation holes on both sides. One side of the film 16 is heat sealed to the lower film 12 and the other to the upper film 12, and both sides of the upper and lower films 12 along the longitudinal direction are heat sealed to one another so as to construct flow passages 29A and 29B with different formations of irrigation holes.

REFERENCES:
patent: 2339632 (1944-01-01), Folsom
patent: 2743960 (1956-05-01), Kamin
patent: 2749180 (1956-06-01), Andrews
patent: 3080124 (1963-03-01), Rathman
patent: 3567134 (1971-03-01), Smith
patent: 4161290 (1979-07-01), Hill
patent: 4193552 (1980-03-01), Ishikawa
patent: 4285472 (1981-08-01), Okada et al.

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