Nozzle for use in rotational casting apparatus
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05B-001/00
B05B-013/03
출원번호
US-0659732
(2003-09-10)
발명자
/ 주소
DeMent,R. Bruce
Werstler,Paul
출원인 / 주소
Kastalon, Inc.
대리인 / 주소
Much, Shelist, Freed
인용정보
피인용 횟수 :
0인용 특허 :
26
초록▼
For use in a rotational casting machine used for coating a rotating body with elastomer, such as polyurethane, there is provided a nozzle used for dispensing the liquid polyurethane onto the rotating body to be coated. The outlet of the nozzle is a narrow, elongated slit or opening. However, the in
For use in a rotational casting machine used for coating a rotating body with elastomer, such as polyurethane, there is provided a nozzle used for dispensing the liquid polyurethane onto the rotating body to be coated. The outlet of the nozzle is a narrow, elongated slit or opening. However, the interior passageway of the nozzle continually changes shape from the inlet to the outlet thereof, in order to ensure a constant cross-sectional area of the interior passageway along the length thereof, and in order to arrive at the desired narrow, elongated outlet-opening, whereby laminar flow of the liquid polyurethane is achieved with the concomitant reduced dwell-time of the liquid polyurethane therein, in order to reduce build up and clogging of the nozzle.
대표청구항▼
What is claimed is: 1. A nozzle for dispensing a liquid, such as an elastomer for use with a rotational casting apparatus used to coat a body, comprising: an interior flow passageway through which liquid flows; said interior flow passageway defining a straight longitudinal axis along the length th
What is claimed is: 1. A nozzle for dispensing a liquid, such as an elastomer for use with a rotational casting apparatus used to coat a body, comprising: an interior flow passageway through which liquid flows; said interior flow passageway defining a straight longitudinal axis along the length thereof, and having an inlet section, an intermediate section, and an outlet opening; said intermediate section comprising a plurality of different portions, each said portion having a cross-sectional shape along said longitudinal axis different from a cross sectional shape of another of said plurality of different portions; each said cross-sectional shape being defined in a plane transverse to said longitudinal axis; each said cross-sectional shape of each of said plurality of different portions defining a cross-sectional area substantially equal to the cross-sectional area of another said cross-sectional shape of said plurality of different cross-sectional shapes; said outlet opening having a substantially elongated-like shape and having a cross-sectional area greater than said cross-sectional area of each said cross-sectional shape of said plurality of different cross-sectional shapes, whereby substantial laminar flow through said intermediate section and substantial equality of dwell-time of each hypothetical section of flowing liquid in said intermediate section occurs. 2. The nozzle according to claim 1, wherein said inlet section of said interior passageway comprises laminar-flow tubular section for ensuring laminar flow therein. 3. The nozzle according to claim 2, wherein said laminar-flow tnbular section for ensuring laminar flow comprises a venturi-flow tubular portion, said venturi-flow tubular portion having an end-cross-section having a cross-sectional area substantially equal to said cross-sectional area of each of said plurality of different cross-sectional shapes. 4. The nozzle according to claim 1, wherein said plurality of different protions comprises a first series of substantially circular cross sections and second series of substantially ellipse-like cross sections. 5. The nozzle according to claim 4, wherein said plurality of different portions further comprises a third series of substantially elongated slot-like cross sections. 6. The nozzle according to claim 5, wherein at least some of said third series of substantially elongated slot-like cross sections are an oval-of-Cassini-like shape. 7. The nozzle according to claim 6, wherein said outlet opening is an oval-of-Cassini-like shape. 8. The nozzle according to claim 1, wherein said outlet opening is an oval-of-Cassini-like shape. 9. The nozzle according to claim 1, wherein said outlet opening comprises a cross-sectional area at least twice as great as said cross-sectional area of each said cross-sectional shape of said plurality of different cross-sectional shapes. 10. The nozzle according to claim 1, wherein said plurality of different portions shapes comprises a first series of substantially circular cross-sectional shapes, and a second series of substantially elongated cross-sectional shapes. 11. The nozzle according to claim 10, wherein at least some of said second series of substantially elongated cross-sectional shapes are an oval-of-Cassini-like shape. 12. The nozzle according to claim 11, wherein said outlet opening is an oval-of-Cassini-like shape. 13. The nozzle according to claim 12, wherein said outlet opening comprises a cross-sectional area at least twice as great as said cross-sectional area of said second series of cross-sectional shapes. 14. The nozzle according to claim 10, wherein each said cross section of said second series of substantially elongated cross-sectional shapes comprises a horizontal x-coordinate dimension and a vertical y-coordinate direction; each said cross section of said third series of elongated cross-section shapes having a x-y product different from that of any other respective said cross section of said third series. 15. The nozzle according to claim 1, wherein said inlet section of said interior passageway comprises a laminar-flow tubular section for ensuring laminar flow therein; said laminar-flow tubular section comprising a venturi-flow tubular portion, said venturi-flow tubular portion having a circular end-cross-section having a cross-sectional area substantially equal to said cross-sectional area of each of said plurality of different cross-sectional shapes. 16. A dispensing nozzle for dispensing fluid comprising: an unbranched interior flow passageway through which the liquid flows; said interior flow passageway defining a straight longitudinal axis along the length thereof and having an inlet section, an intermediate section and an outlet; said intermediate section comprising a plurality of different cross-sectional shapes along said longitudinal axis; each said cross-sectional shape being defined in a plane transverse to said longitudinal axis; each said cross-sectional shape defining a cross-sectional area substantially equal to the cross-sectional area of another said cross-sectional shape. 17. The dispensing nozzle according to claim 16, wherein said outlet has a shape similar to the shape of the last cross-sectional shape of said intermediate section adjacent thereto, whereby substantial laminar flow through said intermediate section and substantial equality of dwell-time of each hypothetical section of flowing liquid in said intermediate section occurs; said plurality of different cross sections comprising a first series of substantially circular cross-sectional shapes, a second series of substantially ellipse-like cross-sectional shapes, and a third series of substantially elongated cross-sectional shapes. 18. A dispensing nozzle comprising: an interior flow passageway through which fluid flows; said interior flow passageway defining a longitudinal axis along the length thereof, and having an inlet section, an intermediate section, and an outlet opening; said intermediate section comprising a plurality of different cross-sectional shapes along said longitudinal axis; each said cross-sectional shape being defined in a plane transverse to said longitudinal axis; and each said cross-sectional shape defining a cross-sectional area substantially equal to the cross-sectional area of every other said cross-sectional shape of said plurality of different cross-sectional shapes.
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이 특허에 인용된 특허 (26)
Standlick Ronald E. (Rochester MI) Standlick David A. (Utica MI), Adjustable flow applicator for a positive displacement constant flow-rate dispenser.
Lawrence John Heaslip CA; James Derek Dorricott CA, Casting nozzle with diamond-back internal geometry and multi-part casting nozzle with varying effective discharge angles and method for flowing liquid metal through same.
Grimm Wolfgang (Leverkusen DEX) Bruning Dirk (Leverkusen DEX) Recker Klaus (Koln DEX) Ruprecht Hans-Dieter (Koln DEX) Muller Heinz (Leverkusen DEX), Method and device for coating a body rotating about an axis.
Eisen Norbert (Koln DEX) Godthardt Lutz-Peter (Leverkusen DEX) Haas Peter (Haan DEX), Process for insulating pipes using polyurethane rigid foams by the rotational casting process.
Schreiner Wilhelm (Leverkusen DEX) Grimm Wolfgang (Leverkusen DEX), Process for the continuous production of elongate hollow bodies or inner linings for such hollow bodies.
De Winter Hugo (Gentbrugge BEX) Debaes Bernard (Damme-Sijsele BEX) Buyck Philippe (Serskamp BEX), Spray nozzle for spray gun for forming a polyurethane layer on a surface.
Oudard Jean-Francois,FRX ; Crampon Pascal,FRX ; Jacquet Patrice,FRX, Technique for depositing coatings by pyrolysis/decomposition of precursor gas or gases.
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