Swirl unit, orifice plate, and spray nozzle including same

USRE41864E1 · kind E1 · reissue

Assignee

• Bete Fog Nozzle, Inc. · US

Inventors

• Lincoln S. Soule · Wendell, US
• Douglas J. Dziadzio · Montague, US
• Mark W. Yorns · Ware, US
• Paul J. Mueller · Springfield, US
• Daniel T. deLesdernier · Greenfield, US
• Thomas A. Bassett · Florence, US
• Shane Taylor · Amherst, US
• Matthew P. Betsold · Northfield, US

Key dates

• Filing date: Aug 13, 2007
• Grant date: Oct 26, 2010
• Expiry date: Aug 13, 2027

Classification

• Technology area (CPC —): General

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.