Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Patent
1993-02-09
1994-03-15
Merritt, Karen B.
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Nozzle cleaner, flusher or drainer
2392883, B05B 1502
Patent
active
052940535
ABSTRACT:
There is disclosed a rotatable orifice tip holder for use in airless spraying which has an orifice tip member mounted in a transverse through bore of the holder. The through bore has a major portion of a first, large diameter and a lesser portion of a substantially lesser diameter. The orifice tip member is press fitted into the through bore with its hemispherical head received within the lesser diameter portion of the through bore and a sealing plug is permanently seated, by a press fit into the major portion of the through bore. The sealing plug has a through passageway of a small diameter and a counter bore of greater diameter but lesser length and is oriented in the through bore of the holder with the counter bore adjacent the inlet face of the orifice tip member. The volume of the counterbore is maintained at a minimal volume which provides adequate diffusion of the spray jet during the cleaning operation yet which exhibits minimal frictional pressure loss during spraying. Further, the reduced diameter of the through bore in the spray tip turret member provides a maximum seal area while in the cleaning position, and avoids leaks during the cleaning of the tip.
REFERENCES:
patent: 3593920 (1971-07-01), Watson
patent: 4074857 (1978-02-01), Calder
patent: 4116386 (1978-09-01), Calder
patent: 4508268 (1985-04-01), Geberth, Jr.
patent: 4537355 (1985-08-01), Calder
patent: 4715537 (1987-12-01), Calder
patent: 4971249 (1990-11-01), Tam et al.
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