Drip emitter

Fluid sprinkling – spraying – and diffusing – Processes


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239542, 239547, 239272, B05B 1500, B05B 1700




An emitter includes a body member having a head portion. The head portion has an outer peripheral surface that defines an elongated channel and the channel extends along a tortuous path from an inlet end of the channel to an outlet end of the channel. A cover of heat shrinkable material is shrunk over the outer peripheral surface of the head portion covers the channel to form a turbulent flow passage. The head portion may include generally opposed, first and second transverse surfaces between which the outer peripheral surface extends, the cover extending partially over the transverse surfaces to form flanges that engage the transverse surfaces. The heat shrinkable material may be shrinkable both axially and circumferentially for this purpose. One embodiment includes an emitter outlet in the form of an annular basin that is fed with a non-radially disposed slot to produce a self-cleaning vortex action.

patent: 3804334 (1974-04-01), Curry
patent: 3833176 (1974-09-01), Caldwell
patent: 3851896 (1974-12-01), Olson
patent: 3874598 (1975-04-01), Havens
patent: 3981452 (1976-09-01), Eckstein
patent: 4209133 (1980-06-01), Mehoudar
patent: 4281798 (1981-08-01), Lemelstrich
patent: 4519546 (1985-05-01), Gorney et al.
patent: 4533083 (1985-08-01), Tucker
patent: 4573640 (1986-03-01), Mehoudar


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