Invalidity dossier
US 5072883
Full cone spray nozzle with external air atomization
Current assignee: Spraying Systems Co
Added 9/21/2026, 9:37:47 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US5072883A — Full Cone Spray Nozzle with External Air Atomization
Title: Full cone spray nozzle with external air atomization
Patent number: US 5,072,883 A
Inventor: Daniel A. Vidusek
Assignee: Spraying Systems Co. (assignment recorded 1990-04-27 to Spraying Systems Co., a corp. of Illinois)
Application number: US 07/504,321 (filed 1990-04-03)
Priority date: 1990-04-03
Granted/published: 1991-12-17
Legal status (as listed): Expired – Fee Related; anticipated expiration 2010-04-03
Source: https://patents.google.com/patent/US5072883/en
Purpose. The invention relates generally to spray nozzles, particularly air atomizing spray nozzles that generate a full cone spray pattern in which liquid droplets are distributed uniformly throughout the pattern. It is described as finding particular, but not exclusive, utility in apparatus for continuous casting of steel slabs, ingots, billets or the like. A stated aim is that the nozzle discharge a substantially uniform pattern of fine droplets even if the supply of pressurized air is dislocated or interrupted (e.g., compressor failure, valve blockage, supply-line break, or power outage), reducing problems from uneven coolant application.
Plain-language scope. A hollow support body has separate sockets for pressurized liquid and pressurized air. A nozzle tip assembly mounts to the body via a threaded hub, with a gasket (e.g., soft metallic copper) forming a leak-proof seal. Liquid flows through an axial chamber, past a swirl-imparting vane having an upstream flow divider web and downstream semi-helical deflectors, and out a liquid orifice with a diverging outlet. A frusto-conical end cap with a central discharge opening is held by a union nut. Compressed air passes bores into an annular cavity between the orifice's diverging end and the cap interior, which turns the air inward toward the opening's center; an annular slot directs air transverse to the liquid discharge, externally atomizing it into a wide, uniform full cone spray.
Not established by this excerpt. The claims, the abstract's full text, detailed embodiments, and any prior-art references are omitted; the excerpt does not establish claim scope, validity, or prosecution history.
Generated 10/1/2026, 10:01:59 PM
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Assignment history
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Prior art
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