Coating apparatus – Projection or spray type
Reexamination Certificate
2007-09-18
2007-09-18
Tadesse, Yewebdar (Department: 1734)
Coating apparatus
Projection or spray type
C118S320000, C118S319000, C239S553500, C425S461000
Reexamination Certificate
active
10862248
ABSTRACT:
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 nozzle of the invention has a plurality of liquid-flow interior discharge-passageways each of which has an inlet connected to a sub-branch tube, which sub-branch tube is, in turn, is fluidly connected to a main branch that, in turn, is connected to a main inlet-passageway having the inlet that is directly connected to mixing head. Each discharge-passageway, or exit-passageway, changes in cross-sectional shape along the longitudinal axis thereof from its inlet to its outlet such that the cross-sectional area from the inlet to the outlet thereof gradually and minimally increases, whereby at least substantial laminar flow of the liquid is achieved with the concomitant reduced dwell-time of the liquid therein, in order to reduce in-nozzle reaction and subsequent clogging of the nozzle. The exit of the nozzle itself is constituted by the plurality of spaced-apart exit-openings or outlets of the discharge-passageways, where each such exit-opening or outlet is formed as a narrow, elongated slit or opening.
REFERENCES:
patent: 873301 (1907-12-01), Cummings et al.
patent: 2122703 (1938-07-01), Weinreich
patent: 2945739 (1960-07-01), Lehmicke
patent: 3834629 (1974-09-01), Hellman et al.
patent: 4017240 (1977-04-01), Nelson
patent: 4055302 (1977-10-01), Hruby, Jr.
patent: 4141507 (1979-02-01), Rump
patent: 4151955 (1979-05-01), Stouffer
patent: 4300723 (1981-11-01), Prasthofer
patent: 4466854 (1984-08-01), Hawerkamp
patent: 4494698 (1985-01-01), Brown et al.
patent: 4565515 (1986-01-01), Maier
patent: 4689003 (1987-08-01), Schreiner et al.
patent: 4721251 (1988-01-01), Kondo et al.
patent: 4741286 (1988-05-01), Itoh et al.
patent: 4758397 (1988-07-01), Schreiner et al.
patent: 4801955 (1989-01-01), Miura et al.
patent: 4852773 (1989-08-01), Standlick et al.
patent: 4982896 (1991-01-01), Crow
patent: 5028006 (1991-07-01), DeWinter et al.
patent: 5031426 (1991-07-01), Wilson
patent: 5470515 (1995-11-01), Grimm et al.
patent: 5490554 (1996-02-01), Moritz
patent: 5587117 (1996-12-01), Eisen et al.
patent: 5601881 (1997-02-01), Grimm et al.
patent: 5658386 (1997-08-01), Grimm et al.
patent: 5704982 (1998-01-01), Oudard et al.
patent: 5895689 (1999-04-01), Gajewski
patent: 5895806 (1999-04-01), Gajewski
patent: 5902540 (1999-05-01), Kwok
patent: 6394369 (2002-05-01), Goenka et al.
patent: 6464154 (2002-10-01), Heaslip et al.
patent: 2005/0031854 (2005-02-01), Lorenz et al.
“Rolls and Rollers with Baytec-Reactive Coating”, FKM Walzentechnik GmbH.
“Baytec Reactive Elastomers”, Mobay Corp..
“Ribbon Flow Systems”, Uniroyal Chemical Co., Inc.
“Baytec High Reactice Elastomer -Baytech Roll Covering, Baytec HRE-829”, Mobay Corp.
“Ribbon Flow Systems-Presentation to Kastalon”, May, 2001.
DeMent R. Bruce
Snyder, III Robert G.
Werstler Paul
Gerstein Milton S.
Kastalon Inc.
Much Shelist Freed
Tadesse Yewebdar
LandOfFree
Nozzle for use in rotational casting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nozzle for use in rotational casting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nozzle for use in rotational casting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3789454