Swirl unit, orifice plate, and spray nozzle including same

Fluid sprinkling – spraying – and diffusing – Flow deflecting or rotation controlling means – Fluid rotation inducing means upstream of outlet

Reissue Patent

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Details

C239S461000, C239S490000, C239S505000

Reissue Patent

active

RE041864

ABSTRACT:
In a spray nozzle (10), a carrier (12) defines a spray aperture (20), a groove (30) surrounding the spray aperture for receiving an o-ring (32), a first locating bore (26) for slidably receiving an orifice plate (14) seated against the o-ring (32) and for aligning the orifice plate with the spray aperture, and a second locating bore (28) for slidably receiving a swirl unit and aligning the swirl unit (16) with the orifice plate and spray aperture. The swirl unit (16) defines on its peripheral surface a recessed flat (58) forming a fluid passageway between the swirl unit and carrier. The swirl unit (16) includes a swirl chamber (60) defined by a curvilinear surface (62) formed within the swirl unit, and an inlet port (64) formed in fluid communication between the swirl chamber and fluid passageway. The nozzle body (18) is threadedly received within the carrier (12) behind the swirl unit (16) to axially press the swirl unit, and in turn press the orifice plate (14) against the adjacent surface of the carrier.

REFERENCES:
patent: 2904263 (1959-09-01), Tate et al.
patent: 3304013 (1967-02-01), O'Brien
patent: 3680793 (1972-08-01), Tate et al.
patent: 3887137 (1975-06-01), Nakamura et al.
patent: RE30004 (1979-05-01), Reed
patent: 4367847 (1983-01-01), Bayer
patent: 5152463 (1992-10-01), Mao et al.
patent: 5333790 (1994-08-01), Christopher
patent: 5358179 (1994-10-01), Lund et al.
patent: 5421522 (1995-06-01), Bowen
patent: 5934569 (1999-08-01), Soule et al.
patent: RE39767 (2007-08-01), Soule et al.
Photograph of Prior Art Swirl Unit (“Swirl Unit 1”); Manufactured by Delevan Spray Technologies; date: more than one year prior to Sep. 3, 1997.
Photographs (4) of Prior Art Swirl Unit (“Swirl Unit 2”); Manufactured by Delevan Spray Technologies; date: more than one year prior to Sep. 3, 1997.

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